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Physio II
Physio quiz 1
181
Accounting
Kindergarten
03/25/2013

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Term
The ability of body systems to increase their function given the need to adapt is known as what?
Definition
physiologic reserve
Term
What can ensure that the systems that are essential to adaptation function adequately?
Definition
Genetic endowment
Term
two most common manifestations of an alteration in the sleep—wake cycle are?
Definition
insomnia
sleep deprivation or increased somnolence
Term
What is hardiness?
Definition
describes a personality characteristic that includes
a sense of having control over the environment,
a sense of having a purpose in life,
an ability to conceptualize stressors as a challenge rather than a threat
Term
Core body temperature is maintained within a range of?
Definition
97.0 - 99.5 degrees Fahrenheit
Term
Properly protected, the body can function in environmental conditions that range from?
Definition
-58 degrees Fahrenheit to +122 degrees Fahrenheit
Term
What is the thermal control center of the body?
Definition
Hypothalamus
Term
Core temperatures above________ or below ________usually mean that the body’s ability to thermoregulate has been impaired.
Definition
Above 105.8 degrees F
Below 93.2 F
Term
Spinal cord injuries that transect the cord where, can seriously impair temperature regulation and why?
Definition
at T6 or above
because the thermoregulatory centers in the hypothalamus can no longer control skin blood flow and sweating.
Term
The body contracts or dilates superficial blood vessels for heat loss?
Definition
Dilates the blood vessels
Term
What are the responses of the body to being over heated?
Definition
Superficial blood vessel dilation
Sweating
Term
What neurotransmitters are released when the body needs an increase in body temperature, to shift body metabolism to heat production rather than energy generation?
Definition
Norepinephrine
Epinephrine
Term
What is the difference between hyperthermia and fever?
Definition
Fever is due to an upward displacement of the thermostatic set-point
Hyperthermia is where the set-point is unchanged, but the mechanisms that control body temperature are ineffective
Term
Phagocytic cells digest the bacterial products and then release what?
Definition
Pyrogenic cytokines: principally interleukin-1 (IL-1), interleukin-6 (IL-6), and tumor necrosis factor –alpha (TNF-alpha)
Term
What is considered to be the final fever mediator in the hypothalamus?
Definition
Prostaglandin E2 (PGE2)
Term
Prostaglandin E2 (PGE2) is a metabolite of what?
Definition
Arachidonic acid
Term
rhinoviruses responsible for the common cold are cultured best at what temp? Which is similar to the temperature where in the body?
Definition
91.4 F, nasopharnyx
Term
intermittent fever is what?
Definition
One in which temperature returns to normal at least once every 24 hours
Term
remittent fever is what?
Definition
the temperature does not return to normal and varies a few degrees in either direction
Term
sustained or continuous fever is what?
Definition
the temperature remains above normal with minimal variations (usually less than 1 degree F)
Term
recurrent or relapsing fever is what?
Definition
one in which there is one or more episodes of fever, each as long as several days, with one or more days of normal temperature between episodes.
Term
Normally, a 1 degree F raise in temperature produces what increase in HR?
Definition
10 bpm increase in heart rate
Term
A heart rate that is slower than anticipated relative to the fever can occur with what disease?
Definition
Legionnaire’s disease
Drug fever
Term
A heart rate that is more rapid than anticipated relative to the fever can be caused by what?
Definition
Hyperthyroidism
Pulmonary embolism
Term
Fever of unknown origin (FUO) is defined as?
Definition
A temperature elevation 101 degrees F or higher that is present for 3 weeks or longer
Term
What are some causes of FUO?
Definition
Malignancy
Drug fever
HIV/TB, abscessed infections
Cirrhosis
Gallbladder disease (most common)
Term
What is the most common cause of FUO?
Definition
Gallbladder disease
Term
What are the levels of heat exhaustion, in order of severity?
Definition
Heat cramps
Heat exhaustion
Heat stroke
Term
Malignant hyperthermia describes a rare genetic disorder of?
Definition
anesthetic-related hyperthermia
Term
heat index is what?
Definition
The temperature that the body senses when both the temperature and humidity are combined.
Term
What is the rectal temp, usually, during heat exhaustion?
Definition
100-104 F
Term
If the individual has water depleted heat exhaustion and is hypernatremic, rehydration needs to occur at a regulated rate to reduce what?
Definition
Development of iatrogenic cerebral edema
Term
The core body temp during a heat stroke is usually what?
Definition
>104
Term
What are 3 reasons infants or young children cannot lower body temp as quickly as adults?
Definition
lack sufficient body surface area to dissipate excess heat,
have a lower rate of sweating,
have a slower rate of acclimatization
Term
Tissue damage ensues when core temperature rises above?
Definition
109.4 degrees F
Term
The most common cause of drug fever is?
Definition
Hypersensitivity reaction
Term
How long must you be exposed to a medication before developing drug fever? Does it depend on the dose of the drug?
Definition
Several weeks
It is not dose dependent
Term
Malignant hyperthermia is usually associated with what type of anesthetic agents?
Definition
Halogenated
Term
Strenuous exercise lowers the production of what nonessential amino acid?
Definition
Glutamine
Term
What is virchow's triad?
Definition
Hypercoagulablility state
Vessel injury
Stasis of venous flow
Term
What two striated muscles provide for movement of the eyelids
Definition
Levator palpebrae superioris
Orbicularis oculi
Term
levator palpebrae superioris, innervated by, what cranial nerve, serves to raise the upper lid?
Definition
Oculomotor nerve (CN III)
Term
orbicularis oculi muscle, which is supplied by what cranial nerve, closes the eyelids
Definition
Facial nerve (CN VII)
Term
What is delicate mucous membrane that lines the anterior surface of both eyelids
Definition
Conjunctiva
Term
What is the main function of the conjunctiva?
Definition
its main function is the production of a lubricating mucus that bathes the eye and keeps it moist.
Term
A major part of the refraction (i.e. bending) of light rays and focusing of vision occurs in the what?
Definition
Cornea
Term
How does the cornea obtain nutrients?
Definition
Diffusion
Term
Corneal epithelium is heavily innervated by what sensory neurons?
Definition
Trigeminal nerve (CN V), ophthalmic division (CN V1)
Term
The uveal tract is made up of what 3 sections?
Definition
Iris
Ciliary body
The choroid
Term
Changes in pupil size are controlled by what?
Definition
Iris
Term
What is miosis? What nervous system produces this?
Definition
Pupillary constriction
Parasympathetic
Term
What is mydriasis? What nervous system produces this?
Definition
Pupillary dilation
Sympathetic
Term
Intraocular pressure is largely regulated by what?
Definition
Aqueous humor
Term
aqueous humor is produced by what?
Definition
the ciliary body
Term
Aqueous humor leaves through the what?
Definition
Iridocorneal angle
Term
Intraocular pressure maintained within a normal range of what?
Definition
9 - 21mmHg
Term
What is the most common form of glaucoma?
Definition
Open-angle glaucoma
Term
What causes open-angle glaucoma?
Definition
Abnormality of the trabecular meshwork that controls the flow of aqueous humor into the canal of schlemm
Term
A lesion on the right optic nerve causes a vision loss on which side?
Definition
Right eye vision loss
Term
The external acoustic meatus is what shape?
Definition
S-shaped
Term
The middle ear is connected anteriorly with the nasopharynx by what?
Definition
Eustachian tube, also called the pharyngotympanic tube
Term
What are the three tiny bones of the ear?
Definition
Stapes
Malleus
Incus
Term
What are the 3 basic functions of the eustachian tube?
Definition
Ventilation of pressures
Drainage of secretions of the nasopharynx
Protection
Term
Receptors for hearing are contained in the what?
Definition
Cochlea
Term
What are the receptive organs that generate nerve impulses in response to sound vibrations?
Definition
Hair cells
Term
What is sense in the vestibular apparatus?
Definition
Acceleration and head position
Term
CNS consists of what?
Definition
brain and spinal cord
Term
What are the two types of neurons and what do they do?
Definition
Afferent (sensory neurons) - carry information to the CNS
Efferent (motor neurons) - carry information from CNS to effector organs
Term
interneurons or internuncial neurons) do what?
Definition
modulate and control the body’s response to sensory input from the internal and external environments
Term
what produces the myelin?
Definition
oligodendrocytes in the CNS and Schwann cells in the PNS
Term
Myelin has a high_________content, which gives it what color?
Definition
Lipid, white color
Term
In what pathologic conditions is the myelin degenerated or destroyed?
Definition
Multiple sclerosis in the CNS
Guillain-Barre syndrome in the PNS
Term
nervous system appears in what developmental stage?
Definition
very early in the embryonic development
Term
What becomes functional approximately the second year of life, and it includes the pathways needed for bladder training?
Definition
Neolayer
Term
The spinal cord terminates at where?
Definition
L2
Term
Dorsal horns contain what?
Definition
IA neurons that receive afferent impulses through the dorsal roots and other connecting neurons
Term
Ventral horns contain what?
Definition
OA neurons and the efferent LMNs that leave the cord thorough the ventral roots
Term
How many spinal nerves are at each section?
Cervical, thoracic, lumbar, sarcral, coccygeal?
Definition
Cervical - 8
Thoracic - 12
Lumbar - 5
Sacrum - 5
Coccygeal - 2
Term
The myostatic or stretch reflex does what?
Definition
Controls muscle tone and helps maintain posture
Term
All surfaces of the spinal cord, brain, and segmental nerves are convered with a delicate connective tissue layer called what?
Definition
pia matter
Term
A second, very delicate, nonvascular, and waterproof layer, called the what , encloses the entire CNS?
Definition
arachnoid
Term
CSF is contained where?
Definition
In the subarachnoid space.
Term
Immediately outside the arachnoid is the continuous sheath of strong connective tissue,_______________ , which provides the major protection for the brain and spinal cord
Definition
The dura matter (i.e. “tough layer”)
Term
What two carriers, provide the means for maintaining the stable chemical environment of the brain?
Definition
Blood brain barrier and the CSF-brain barrier
Term
Only what enters the brain with relative ease?
Definition
water, carbon dioxide, and oxygen
Term
What division of the ANS is responsible for the Fight or Flight response?
Definition
Sympathetic
Term
What division of the ANS is responsible for conservation of energy and resource replenishment?
Definition
Parasympathetic
Term
What is the neurotransmitter for the preganglionic neurons for both ANS divisions as well as the postganglionic neurons of the parasympathetic nervous system?
Definition
Acetylcholine
Term
What are the neurotransmitters for most sympathetic post ganglionic neurons?
Definition
Norepinephrine and epinephrine
Term
Two types of cholinergic receptors are known as?
Definition
muscarinic
nicotinic
Term
sweat glands are innervated by what nervous system?
Definition
the sympathetic nervous system.
Term
These receptors are found in the autonomic ganglia and the end plates of skeletal muscle?
Definition
Nicotinic receptors
Term
Acetylcholine is excitatory to most muscarinic and nicotinic receptors, except those where?
Definition
in the heart and lower esophagus, where it has an inhibitory effect.
Term
The drug ___________ is an antimuscarinic or muscarinic cholinergic blocking drug that prevents the action of acetylcholine at excitatory and inhibitory muscarinic receptor sites.
Definition
Atropine
Term
vascular smooth muscle, excitation of alpha receptors causes vaso___________, and excitation of beta receptors causes vaso___________
Definition
Vasoconstriction
Vasodilation
Term
Beta receptors are most prevalent where?
Definition
Heart, the blood vessels of skeletal muscle, and the bronchioles
Term
Alpha 1 summary, where do they act, what do they do?
Definition
Peripheral vascular - constriction
Term
b-adrenergic receptors are found primarily where?
Definition
in the heart - increase HR
Term
Beta 2-adrenergic receptors are found where?
Definition
in the bronchioles, dilate
Peripheral vasculature - dilate
Term
Alpha 2 summary, where?
Definition
Brain
Term
________order neurons transmit sensory information from the periphery to the CNS
Definition
First
Term
__________order neurons communicate with various reflex networks and sensory pathways in the spinal cord and travel directly to the thalamus
Definition
Second
Term
__________order neurons relay information from the thalamus to the cerebral cortex
Definition
Third
Term
Three families of endogenous opioid peptides have been identified, what are they?
Definition
enkephalins
endorphins,
dynophins
Term
This region of the brain is responsible for higher levels of thought, understanding, speaking, remembering, motor function, visualizing
Definition
Cerebrum
Term
Diencephalon is made up of what?
Definition
Thalamus, hypothalamus, epithalamus
Term
Brain stem is made up of what? Cranial nerves are intimately associated with this area.
Definition
midbrain, pons, medulla.
Term
This region of the brain is responsible for coordination?
Definition
Cerebellum
Term
What lobe of the brain deals with learning and language?
Definition
Frontal lobe
Term
What lobe of the brain deals with integration of sensory information (shape, size, weight, texture, temperature = metal key)?
Definition
Parietal lobe
Term
What lobe of the brain is responsible for hearing and equilibrium?
Definition
Temporal lobe
Term
What lobe of the brain is responsible for vision?
Definition
Occipital lobe
Term
What region of the brain is responsible for taste and autonomic functions?
Definition
Insula
Term
Which hemisphere: logical, linear thinking and mathematical calculations, problem solving, language-motor and interpretive?
Definition
Left
Term
Which hemisphere: Spatial, three-dimensional function as in drawing, painting, especially recognizing faces. Musical ability as in playing musical instruments and singing?
Definition
Right hemisphere
Term
Emotional tone added to language in which hemisphere?
Definition
right hemisphere
Term
What area controls the larynx, lips and tongue?
Definition
Broca's area
Term
Patient may speak fluently although content may be unrelated to current conversation because they cannot understand spoken words, not even their own speech, what area has been injured?
Definition
Wernicke - Sensory aphasia
Term
Respiratory rhythm control centers, cardiac rate control centers, sleep/wakefulness cycling, is the main functions for what?
Definition
Brain stem
Term
The hallmark of a brainstem lesion is what?
Definition
paralysis of one side of the head with paralysis of the contralateral side of the torso
Term
What inhibits unwanted movements?
Definition
Basal ganglia
Term
Parkinson's Disease- degeneration of substantia nigra, because of what neurotransmitter deprivation?
Definition
dopamine deprivation
Term
loss of coordination, especially of rapid hand and finger movements, intention tremor, would come from damage to which tract?
Definition
Rubrospinal Tracts
Term
lesion from which tract can result in nystagmus (oscillatory eye movements), vertigo (dizziness), ataxic (staggering) gait?
Definition
Vestibulospinal tracts
Term
cerebellar lesions have what type of deficits?
Definition
ipsilateral
Term
cerebral hemisphere is connected via motor tracts to which side of the body
Definition
contralateral (opposite)
Term
CN 1 emerges from where?
Definition
Cerebral hemisphere
Term
CN II-XII emerge from where?
Definition
diencephalon and brain stem
Term
What matter contains Neuronal cell bodies and synapses
Definition
Gray matter
Term
A LMN lesion would be ipsilateral or contralateral?
Definition
Ipsilateral
Term
Which tract does not cross over?
Definition
Spinocerebellar
Term
Spinocerebellar lesion would affect which side
Definition
ipsilateral
Term
Which tract deals with Pain and temperature?
Definition
Spinothalamic tract
Term
A lesion of the spinothalamic tract results in a loss of pain/temperature sensation to which side below level of lesion?
Definition
Contralateral side
Term
Where does the Posterior (Dorsal) Columns System cross?
Definition
At the brain stem
Term
Biceps and brachioradialis reflexes assess what nerves?
Definition
C5-6
Term
Triceps reflex assess what nerves?
Definition
C6-7
Term
Patellar reflex assess what nerves?
Definition
L2-4
Term
Achilles reflex assess what nerves?
Definition
S1
Term
Where does the Posterior (Dorsal) Columns System cross?
Definition
At the brain stem
Term
Biceps and brachioradialis reflexes assess what nerves?
Definition
C5-6
Term
Triceps reflex assess what nerves?
Definition
C6-7
Term
Patellar reflex assess what nerves?
Definition
L2-4
Term
Achilles reflex assess what nerves?
Definition
S1
Term
granular cells are the cells that secrete what hormone?
Definition
renin
Term
What reabsorbs about two thirds of the filtered water, sodium, and chloride.
Definition
proximal tubule (convoluted and straight portions)
Term
Cells of the cortical collecting tubule are strongly responsive to and are regulated by what hormones
Definition
aldosterone and ADH
Term
A typical glomerular filtration rate (GFR) is what? mL/min
Definition
about 125
Term
What factors determine GFR?
Definition
Permeability of glomerular capillary walls
Net filtration pressure
vascular pressure
Term
Typical glomerular pressures are near what?
Definition
60 mm Hg
Term
peritubular pressures are closer to what?
Definition
20 mm Hg
Term
When the 2 resistances both change in the same direction, the most common state of affairs, their effects on RBF will be what?
Definition
additive
Term
Constriction of the efferent arteriole _________ resistance to outflow from the glomeruli and ___________ the glomerular pressure and GFR.
Definition

Increases

increases

Term
Constriction of the afferent arteriole causes a __________ in the renal blood flow, glomerular filtration pressure, and GFR.
Definition
reduction
Term
Angiotensin II
___________afferent and efferent arterioles and __________ RBF and GFR
Definition
Constricts
decreases
Term
The gold standard for measuring GFR is what?
Definition
the inulin clearance
Term
What is the site of action of aldosterone (sodium reabsorption) and ADH (water reabsorption)?
Definition
Distule tubule
Term
The gold standard for measuring GFR is what?
Definition
the inulin clearance
Term
What is the site of action of aldosterone (sodium reabsorption) and ADH (water reabsorption)?
Definition
Distule tubule
Term
Which nervous system promotes bladder emptying?
Definition
Parasympathetic
Term
Which nervous system promotes bladder filling?
Definition
Sympathetic
Term
What is the muscle of micturition?
Definition
The detrusor muscle
Term
Reason females more likely to have urinary tract infections (UTI) is what?
Definition
Shorter urethra
Term
Assessment of a patient's acid–base status requires measurement of what?
Definition
pH
PCO2
Bicarb Hc03
Term
What is normal urine pH?
Definition
5.5-6.5
Term
What is normal blood pH?
Definition
7.35-7.45
Term
Low pH + Low Bicarb =?
Definition
Metabolic acidosis
Term
High pH + High Bicarb = ?
Definition
Metabolic alkalosis
Term
Primary respiratory disorders affect blood acidity by changes in_________, and primary metabolic disorders are disturbances in __________ concentration
Definition
PCO2
HCO3
Term
Normal anion gap?
Definition
6-12
Term
What is the anion gap equation?
Definition
Na+ - (HCO3- + Cl-)
Term
Male gonads have what function?
Definition
the production of germ cells (gametogenesis)
the secretion of sex hormones
Term
secretion of testosterone is under the control of what?
Definition
LH
Term
testes are normally maintained at a temperature of about what?
Definition
32°C
Term
Hereditary baldness often fails to develop unless what is present?
Definition
dihydrotestosterone (DHT)
Term
most potent naturally occurring estrogen in humans is what?
Definition
17-estradiol
Term
In postmenopausal women, the principal source of circulating estrogen is what?
Definition
adipose tissue stroma
Term
What are the principal source of circulating estrogen premenopausal?
Definition
The ovaries
Term
GnRH causes the release of what hormones?
Definition
LH
FSH
Term
Corpus luteum produces large amounts of what?
Definition
Progesterone
Term
There is a narrow "window of implantation," spanning days ________of the endometrial cycle
Definition
19-24
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