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MAP VAP 20.1-22.14
UCCS Bio 2020 Lykins- Exam 3
176
Anatomy
Undergraduate 1
03/12/2014

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Cards

Term
Which type of epithelium lines the inferior portions of the pharynx?
Definition
simple squamous epithelium
Term
The respiratory epithelium of the conducting airways consists of
Definition
pseudostratified ciliated columnar epithelium.
Term
The openings to the nostrils are the
Definition
external nares.
Term
Which of the following is a cartilaginous structure that surrounds and protects the glottis?
Definition
larynx
Term
The palatine tonsils lie in the walls of the
Definition
oropharynx.
Term
The nasal cavities are divided from one another by the
Definition
nasal septum.
Term
Breathing through the nose rather than the mouth is advantageous because
Definition
all of the above
Term
The laryngeal cartilage composed of elastic cartilage that prevents entry of solids or liquids into the laryngopharynx when swallowing is the
Definition
epiglottis.
Term
A pair of ligaments covered by laryngeal epithelium that function in sound production are the
Definition
vocal folds.
Term
Tension on the vocal cords is regulated by the
Definition
movement of the arytenoid cartilages and contraction of laryngeal muscles.
Term
The ring-shaped cartilage just inferior to the thyroid cartilage is the ________ cartilage.
Definition
cricoid
Term
What branches from the trachea?
Definition
primary bronchi
Term
During a choking episode, most foreign objects are more likely to become lodged in the ________ bronchus due to its larger diameter and steeper angle.
Definition
right primary
Term
Which is greater?
Definition
the number of lobes in the right lung
Term
Which structure is located most superior at the hilum of the left lung?
Definition
pulmonary artery
Term
Damage to the type II pneumocytes of the lungs would result in
Definition
all of the above
Term
The respiratory membrane of the gas exchange surfaces consists of
Definition
simple squamous epithelium.
Term
The actual sites of gas exchange within the lungs are
Definition
alveoli.
Term
Which of the following organs is not part of the lower respiratory system?
Definition
oropharynx
Term
Boyle's law states that gas volume is
Definition
inversely proportional to pressure.
Term
The unit of measurement for pressure preferred by many respiratory therapists is
Definition
torr.
Term
Which of the following muscles might be recruited to increase inspired volume?
Definition
all of the above
Term
Expiratory movements are produced by contraction of the ________ muscle(s).
Definition
internal intercostal
Term
If a patient being tested inhales as deeply as possible and then exhales as much as possible, the volume of air expelled would be the patient's
Definition
vital capacity.
Term
Alveolar ventilation refers to the
Definition
amount of air reaching the alveoli each minute.
Term
________ equals the respiratory rate × (tidal volume - anatomic dead space).
Definition
Alveolar ventilation rate
Term
Which of the following can be calculated if the tidal volume and respiratory rate are known?
Definition
respiratory minute volume
Term
Dalton's law states that
Definition
in a mixture of gases such as air, the total pressure is the sum of the individual partial pressures of the gases in the mixture.
Term
Henry's law states that
Definition
the volume of gas that will dissolve in a solvent is proportional to the partial pressure of that gas.
Term
In inhaled dry air, which of the following is found in the highest concentration?
Definition
nitrogen (N2)
Term
The partial pressure of oxygen in arterial blood is approximately
Definition
95 mm Hg.
Term
The partial pressure of carbon dioxide in venous blood is approximately
Definition
45 mm Hg.
Term
The partial pressure of oxygen in the interstitial space of peripheral tissues is approximately
Definition
40 mm Hg.
Term
The partial pressure of carbon dioxide in the interstitial space of peripheral tissues is approximately
Definition
45 mm Hg.
Term
The process by which dissolved gases are exchanged between the blood and interstitial fluids is
Definition
internal respiration.
Term
Which of the following is greatest?
Definition
the partial pressure of carbon dioxide in venous blood
Term
Each 100 ml of blood leaving the alveolar capillaries carries away roughly ________ ml of oxygen.
Definition
20
Term
Low pH alters hemoglobin structure so that oxygen binds less strongly to hemoglobin at low PO2 . This increases the effectiveness of
Definition
internal respiration.
Term
Which of the following factors would increase the amount of oxygen discharged by hemoglobin to peripheral tissues?
Definition
decreased pH
Term
Carbonic anhydrase
Definition
all of the above
Term
Which statement about the chloride shift is false?
Definition
causes RBCs to swell
Term
Most of the carbon dioxide that is absorbed by blood:
Definition
is converted to carbonic acid.
Term
Which of the following pulmonary characteristics is calculated by adding the vital capacity and the residual volume?
Definition
total lung capacity
Term
The vital capacity is:
Definition
the maximum amount of air that one can move into or out of the lungs in a single respiratory cycle.
Term
During a single quiet respiratory cycle, inhaling more vigorously and exhaling more completely can increase which of the following?
Definition
tidal volume
Term
The condition resulting from inadequate production of surfactant and the resultant collapse of alveoli is
Definition
respiratory distress syndrome.
Term
Asthma is
Definition
an acute condition resulting from unusually sensitive, irritated conducting airways.
Term
The obstructive lung disease in which elastic fibers are lost, leading to collapse of alveoli and bronchioles, is called
Definition
emphysema.
Term
A patient with a connective tissue disease experiences increased pulmonary vascular resistance. Over a period of time you would expect to observe
Definition
increased thickness of the right ventricular wall.
Term
The normal rate and depth of breathing is established by the ________ .
Definition
inspiratory center of DRG
Term
Stimulation of the apneustic center would result in
Definition
more intense inhalation.
Term
If the dorsal respiratory group of neurons in the medulla oblongata were destroyed bilaterally,
Definition
a person would stop breathing.
Term
The most important chemical regulator of respiration is
Definition
carbon dioxide.
Term
Blocking afferent action potentials from the chemoreceptors in the carotid and aortic bodies would interfere with the brain's ability to regulate breathing in response to
Definition
changes in PCO2.
Term
The term hypercapnia refers to
Definition
elevated PCO2 .
Term
Which statement regarding lung cancer is correct?
Definition
Since 1992, the incidence of lung cancer among women has been increasing.
Term
Evan complains that the air in his lungs sometimes "doesn't want to go out." At these times, which of the following muscles is likely working harder than normal?
Definition
Transversus thoracis
Term
Which of these descriptions best matches the term myenteric plexus?
Definition
coordinates activity of muscularis externa
Term
The ________ are double sheets of peritoneal membrane that suspend the visceral organs and carry nerves, lymphatics, and blood vessels.
Definition
mesenteries
Term
A disease that attacks and disables the myenteric plexus would
Definition
decrease intestinal motility.
Term
The ability to function over a wide range of lengths is called
Definition
plasticity.
Term
What type muscle cells are arranged in sheets or layers, with adjacent muscle cells electrically connected by gap junctions and mechanically connected by dense bodies?
Definition
visceral smooth muscles
Term
Waves of muscular contractions that propel the contents of the digestive tract are called
Definition
peristalsis.
Term
The activities of the digestive system are regulated by
Definition
all of the above
Term
Which of the following is an accessory organ of digestion?
Definition
pancreas
Term
Sandwiched between the layer of circular and longitudinal muscle in the muscularis externa is the
Definition
myenteric plexus.
Term
Which of the following is classified as being either squamous or columnar?
Definition
mucosal epithelium
Term
The layer of loose connective tissue that directly supports the digestive epithelium is the
Definition
lamina propria.
Term
The functions of the oral cavity include all of the following, except
Definition
absorption of monosaccharides.
Term
The connection of the anterior portion of the tongue to the underlying epithelium is the
Definition
lingual frenulum.
Term
The ridge of oral mucosa that surrounds the base of a tooth is the
Definition
gingiva.
Term
The bulk of each tooth consists of a mineralized matrix similar to that of bone called
Definition
dentin.
Term
The root of a tooth is covered by
Definition
cementum.
Term
________ are pointed teeth that are adapted for tearing and slashing.
Definition
Cuspids
Term
Which of the following is an accurate characteristic of the pharyngeal phase of swallowing?
Definition
It begins when tactile receptors on the palatal arches and uvula are stimulated.
Term
The esophagus has several variations from the standard plan of the gut tube. These include
Definition
epithelium of mucosa is stratified squamous, and muscularis externa may be striated muscle.
Term
Which structure is the remnant of the ventral mesentery between the liver and the anterior wall of the peritoneal cavity?
Definition
falciform ligament
Term
The ________ supports most of the small intestine and provides stability and limited movement.
Definition
mesentery proper
Term
The double-layer sheets of serous membrane that support the viscera are called
Definition
mesenteries.
Term
Lacteals
Definition
carry absorbed fats to the lymphatic system.
Term
Parietal cells secrete
Definition
hydrochloric acid.
Term
Chief cells secrete
Definition
pepsinogen.
Term
The enzyme pepsin digests
Definition
proteins.
Term
A drug that blocks the action of carbonic anhydrase in parietal cells would result in
Definition
a higher pH during gastric digestion.
Term
The greater omentum is
Definition
a fatty sheet that hangs like an apron over the abdominal viscera.
Term
The region of the stomach that empties into the duodenum is the
Definition
pylorus.
Term
The part of the stomach that functions as a mixing chamber for food and secretions is the
Definition
body.
Term
After food and gastric juices combine, the gastric contents are referred to as ________.
Definition
chyme
Term
The portion of the small intestine that attaches to the cecum is the
Definition
ileum.
Term
The part of the digestive tract that plays the primary role in the digestion and absorption of nutrients is the
Definition
jejunum.
Term
The villi are most developed in the
Definition
jejunum.
Term
An intestinal hormone that stimulates mucus secretion by the submucosal duodenal glands and dilation of intestinal capillaries is
Definition
vasoactive intestinal peptide (VIP).
Term
The intestinal hormone that stimulates the pancreas to release a watery, bicarbonate-rich fluid is
Definition
secretin.
Term
An intestinal hormone that stimulates contraction of the gallbladder to release bile is
Definition
cholecystokinin.
Term
The hormone that stimulates secretion and contraction by the stomach is
Definition
gastrin.
Term
In response to the arrival of acid chyme in the duodenum, the
Definition
blood levels of secretin rise.
Term
During which phase in the control of the digestive system would bicarbonate and bile be stimulated?
Definition

intestinal phase

Yes, food in the intestines initiates a reflex that stimulates secretions of bicarbonate, digestive enzymes, and bile.

Term
Norepinephrine is the neurotransmitter released by which fibers?
Definition

sympathetic postganglionic fibers

Yes, norepinephrine is the neurotransmitter of the sympathetic postganglionic fibers. An increase in the sympathetic system would decrease digestion.

Term
Enteric interneurons that are inhibitory to smooth muscle use which of the following neurotransmitters?
Definition

VIP (vasoactive intestinal peptide)

Yes, both VIP and NO (nitric oxide) are inhibitory to smooth muscle.

Term
Which of the following intestinal hormones stimulates bile from the gall bladder?
Definition

CCK (cholecystokinin)

Yes, CCK causes the gall bladder to contract, releasing bile and an enzyme-rich pancreatic juice to be secreted from the pancreas.

Term
Which of the following GI hormones promotes a pancreatic juice rich in bicarbonate ions?
Definition

secretin

Yes, secretin (from S cells in the duodenum) causes both the liver and pancreas to secrete bicarbonate into the small intestine.

Term
The gastric phase of gastric secretion is triggered by the
Definition
entry of food into the stomach.
Term
During the cephalic phase of gastric secretion,
Definition
there is an increased flow of action potentials along the vagus nerve to the stomach.
Term
The gastroileal reflex
Definition
moves some chyme to the colon.
Term
Approximately the last 15 cm of the digestive tract is the
Definition
rectum.
Term
Which is true regarding the defecation reflex?
Definition
It involves two positive feedback loops.
Term
A blockage of the ducts from the parotid glands would
Definition
all of the above
Term
The ________ gland empties into the oral cavity at the level of the second upper molar.
Definition
parotid
Term
The ________ salivary glands are covered by the mucous membrane in the floor of the mouth.
Definition
sublingual
Term
Each of the following is a function of the liver, except
Definition
antibody production.
Term
Identify the salivary gland that secretes a watery mixture rich in salivary amylase.
parotid
Definition
parotid
Term
Submucosal glands that secrete mucus are characteristic of the
Definition
duodenum.
Term
Gastrin secretion in response to elevated luminal pH is an example of
Definition
local stimulation.
Term
The structure that marks the division between the right and left lobes of the liver is the
Definition
falciform ligament.
Term
Which of the following is a remnant of the fetal umbilical vein?
Definition
round ligament
Term
The human liver is composed of ________ lobe(s).
Definition
four
Term
The basic functional unit of the liver is the
Definition
lobule.
Term
Which of the following is not a component of the portal triad found at the edges of a liver lobule?
Definition
central vein
Term
________ are arranged within a lobule of the liver into a series of plates converging toward a central vein.
Definition
Hepatocytes
Term
Salivation is controlled almost entirely by the nervous system. Which of the following stimuli would inhibit salivation?
Definition

fear

Yes, fear, sleep, fatigue, and dehydration all inhibit salivation.

Term
HCl secretions convert pepsinogen to the active hormone pepsin. What cells in the gastric pits produce pepsinogen?
Definition
chief
Term
In response to a steak dinner, certain secretions are needed to aid digestion. What cells in the pancreas would provide these secretions?
Definition

acinar cells

Yes, in response to a high fat and protein meal, CCK would be stimulated and in turn would stimulate an enzyme-rich secretion from the pancreas.

Term
An increase in HCl (hydrochloric acid) secretion in the duodenum would stimulate which hormone that would help to counteract the effects of HCl?
Definition

secretin

Yes, secretin stimulates the duct cells in the pancreas and liver to secrete a bicarbonate-rich solution that will bind hydrogen ions and increase the pH.

Term
The secretion in the large intestine consists of which of the following?
Definition

bicarbonate- and potassium-rich mucus

Yes, an alkaline mucus secretion of bicarbonate and potassium protects the large intestinal wall from acids produced by resident bacteria.

Term
The common bile duct:
Definition
is formed by the union of the cystic duct and the common hepatic duct.
Term
The duodenal ampulla receives secretions from the
Definition
common bile duct and the pancreatic duct.
Term
Enzymes secreted by the pancreas include
Definition
all of the above
Term
Blockage of the common hepatic duct would interfere with digestion of
Definition
fats.
Term
Tom has hepatitis, an inflammation of the liver. Which of the following symptoms would you expect to observe in Tom?
Definition
jaundice
Term
H. pylori probably prefers the pyloric antrum, because
Definition
The environment is slightly less acidic
Term
Why might the positive feedback loop described above potentially cause damage to digestive organs?
Definition
It will cause the stomach pH to get lower and lower
Term
The sum of all of the biochemical processes going on within the human body at any given time is called
Definition
metabolism.
Term
The carbon dioxide of respiration is formed during
Definition
the citric acid cycle.
Term
The function of the citric acid cycle is to
Definition
remove hydrogen atoms from organic molecules and transfer them to coenzymes.
Term
Catabolism of all of the following is fairly common for energy production, except
Definition
protein.
Term
Glycogenolysis is:
Definition
the release of glucose from glycogen.
Term
The synthesis of glucose from smaller carbon chains is which of the following processes?
Definition
gluconeogenesis
Term
When chyme arrives in the duodenum, CCK release triggers the secretion of which enzyme?
Definition
pancreatic alpha-amylase
Term
In most tissues, the transport of glucose into the cell is dependent on the presence of a carrier protein that is stimulated by which of the following?
Definition
insulin
Term
Although other nutrients can feed into the citric acid cycle, ________ yields energy the quickest.
Definition
glucose
Term
Choose the correct statement regarding glycolysis.
Definition
There is a net gain of two ATP molecules for each glucose molecule converted to two molecules of pyruvate.
Term
Why is glucose the primary energy source for cells?
Definition
It can be efficiently stored as glycogen, which forms compact, insoluble granules.
Term
________ carry excess cholesterol from peripheral tissues to the liver.
Definition
High-density lipoproteins (HDLs)
Term
The lipoproteins that carry absorbed lipids from the intestinal tract to the bloodstream are the
Definition
chylomicrons.
Term
In the human body, cholesterol is important because it
Definition
all of the above
Term
Linoleic acid and linolenic acid are examples of
Definition
essential fatty acids.
Term
The nutrients that yield the most energy per gram when metabolized are
Definition
fats.
Term
During lipolysis
Definition
triglycerides are broken down into glycerol and fatty acids.
Term
In transamination, the amino group of an amino acid is ________, yielding a different amino acid.
Definition
transferred to another molecule
Term
The conversion of ammonia into a less toxic substance produces
Definition
urea.
Term
Urea is formed in the
Definition
liver.
Term
For children there are ________ essential amino acids.
Definition
10
Term
During the absorptive state,
Definition
the liver forms glycogen and insulin levels are elevated.
Term
When the body is relying on internal energy reserves to continue meeting its energy demands, it is in the
Definition
postabsorptive state.
Term
Wally decides to go on a hunger strike to further one of his favorite causes. After many days with nothing but water you would expect to observe
Definition
all of the above
Term
Which of the following is a response coordinated by the heat-loss center?
Definition
The respiratory centers are stimulated.
Term
Which of the following is a response coordinated by the heat-gain center?
Definition
In children, hypothalamic TRH release increases.
Term
Which primary mechanism of heat transfer is the direct transfer of energy through physical contact?
Definition
conduction
Term
Convection:
Definition
is the result of conductive heat loss to the air that overlies the surface of the body.
Term
Which statement regarding long-term regulation of appetite is true?
Definition
Leptin, a peptide hormone released by adipose tissues as they synthesize triglycerides, stimulates the satiety center.
Term
Choose the correct characteristic regarding the short-term mechanism of control of the hypothalamic satiety and feeding centers.
Definition
Several hormones of the digestive tract, including CCK, suppress appetite during the absorptive state.
Term
A high uric acid level (above 7.4 mg/dl) can lead to the painful condition known as
Definition
gout.
Term
Obesity is defined as a body weight more than ________ percent above the ideal body weight for an individual.
Definition
20
Term
On a tour of African countries, Don contracts a bad case of traveler's diarrhea. Because he can't eat very much, his body starts to use energy sources other than carbohydrates. This would result in
Definition
all of the above
Term
Which fat-soluble vitamin is essential for liver synthesis of prothrombin and other clotting factors?
Definition
vitamin K
Term
An excess of which water-soluble vitamin results in polycythemia?
Definition
B12 (cobalamin)
Term
Beriberi is an effect of deficiency of which water-soluble vitamin?
Definition
vitamin B1 (thiamine)
Term
The vitamin that plays a role in maintaining epithelia and is required for the synthesis of visual pigments is vitamin
Definition
A
Term
The vitamin that prevents breakdown of vitamin A and fatty acids is vitamin
Definition
E
Term
A deficiency in vitamin D would result in which of the following disorders?
Definition
rickets
Term
A vitamin obtained from meat that is a coenzyme in amino acid and lipid metabolism is
Definition
pyridoxine (B6).
Term
The vitamin that is a coenzyme in amino acid and nucleic acid metabolism is
Definition
folic acid (folate).
Term
A disorder caused by the ingestion of excessive quantities of a fat-soluble vitamin is known as
Definition
hypervitaminosis.
Term
The food pyramid recommends many servings a day of dark-green and orange vegetables. Which vitamin is particularly abundant in this food group?
Definition

all of the above

(FACE)

Term
Inadequate exposure to sunlight could result in decreased amounts of vitamin ________ in the body.
Definition
D
Term
Impaired fat absorption in the intestine would interfere with the absorption of
Definition
vitamin A.
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