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Ch. 2 Direction and Surface Terms
body planes, positional terms, directional terms, and body cavities
158
Veterinary Medicine
11th Grade
04/14/2012

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Term
ventral
Definition
belly or underside of a body or body part
Term
dorsal
Definition
back
Term
cranial
Definition
toward the head
Term
caudal
Definition
toward the tail
Term
anterior
Definition
front of the body
Term
posterior
Definition
rear of the body
Term
rostral
Definition
nose end of head
Term
cephalic
Definition
pertaining to the head
Term
medial
Definition
toward the midline
Term
lateral
Definition
away from the midline
Term
superior
Definition
uppermost, above, or toward the head (used for bipeds)
Term
inferior
Definition
lowermost, below, or toward the tail (used for bipeds)
Term
proximal
Definition
nearest the midline or nearest to the beginning of a structure
Term
distal
Definition
farthest from the midline or farthest from the beginning of a structure
Term
superficial
Definition
near the surface (aka external)
Term
deep
Definition
away from the surface (aka internal)
Term
palmar
Definition
caudal surface of the manus (front paw) including the carpus (from the antebrachial joint distally)
Term
plantar
Definition
caudal surface of the pes (rear paw) including the tarsus (from the tibiotarsal joint distally)
Term
midsagittal plane
Definition
divides body into equal right and left halves; also called median plane or midline
Term
sagittal plane
Definition
divides body into unequal right and left parts
Term
dorsal plane
Definition
divides body into dorsal and ventral parts; also called frontal plane or coronal plane
Term
transverse plane
Definition
divides body into cranial and caudal part; also called horizontal plane or cross-sectional plane
Term
-logy
Definition
the study of
Term
anatomy
Definition
study of body structure
Term
physiology
Definition
study of body functions
Term
pathology
Definition
study of the nature, causes, and development of abnormal conditions
Term
pathophysiology
Definition
combo of physiology and pathology; study of changes in function caused by disease
Term
etiology
Definition
study of disease causes
Term
arcade
Definition
how teeth are arranged in the mouth
Term
lingual surface
Definition
tooth surface of mandible (lower) that faces the tongue
Term
palatal surface
Definition
tooth surface of the maxilla (upper) that faces the tongue
Term
buccal surface
Definition
aspect of tooth that faces the cheek (aka vestibular surface)
Term
vestibular surface
Definition
aspect of tooth that faces the cheek (aka buccal surface
Term
occlusal surface
Definition
aspect of teeth that meets when you chew
Term
labial surface
Definition
surface of tooth facing the lips
Term
contact surfaces
Definition
aspects of the tooth that touch other teeth
Term
mesial contact surface
Definition
closest to midline of the dental arcade or arch
Term
distal contact surface
Definition
surface furthest from the midline of the dental arcade
Term
body cavity
Definition
hole or hollow space in body that contains and protects internal organs
Term
cranial cavity
Definition
hollow space that contains the brain in the skull
Term
spinal cavity
Definition
hollow space that contains the spinal cord within the spinal column
Term
thoracic cavity
Definition
aka chest cavity; hollow space that contains the heart and lungs within the ribs between the neck and diaphragm
Term
abdominal cavity
Definition
hollow space that contains the major organs of digestion located between the diaphragm and pelvic cavity; inaccurately called peritoneal cavity
Term
peritoneal cavity
Definition
hollow space within the abdominal cavity between the parietal peritoneum and the visceral peritoneum
Term
pelvic cavity
Definition
hollow space that contains the reproductive and some excretory systems (urinary bladder and rectum) organs bounded by the pelvic bones
Term
abdomen
Definition
portion of body between the thorax and pelvis containing the abdominal cavity
Term
thorax
Definition
chest region located between the neck and diaphragm
Term
groin
Definition
lower region of abdomen adjacent to the thigh; aka inguinal area
Term
membranes
Definition
thin layers of tissue that cover a surface, line a cavity, or divide a space or organ
Term
peritoneum
Definition
membrane lining the walls of the abdominal and pelvic cavities and it covers some organs in this area
Term
parietal peritoneum
Definition
outer layer of peritoneum that lines the abdominal and pelvic cavities
Term
visceral peritoneum
Definition
inner layer of the peritoneum that surrounds the abdominal organs
Term
peritonitis
Definition
inflammation of the peritoneum
Term
umbilicus
Definition
pit in the abdominal wall marking the point where the umbilical cord entered the fetus; aka navel
Term
mesentery
Definition
layer of peritoneum that suspends parts of the intestine in the abdominal cavity
Term
retroperitoneal
Definition
means superficial to the peritoneum
Term
recumbent
Definition
lying down
Term
dorsal recumbency
Definition
lying on the back
Term
ventral recumbency
Definition
lying on the belly; aka sternal recumbency
Term
left lateral recumbency
Definition
lying on left side
Term
right lateral recumbency
Definition
lying on the right side
Term
prone
Definition
lying in ventral or sternal recumbency
Term
supine
Definition
lying in dorsal recumbency
Term
adduction
Definition
movement toward midline
Term
flexion
Definition
closure of a join angle or reduction of the angle between two bones
Term
extension
Definition
straightening of a joint or an increase in the angle between two bones
Term
hyperflexion/ hyperextension
Definition
when a joint is flexed or extended too far
Term
supination
Definition
act of rotating the limb or body part so that the palmar surface is turned upward
Term
pronation
Definition
act of rotating the limb or body part so that the palmar surface is turned downward
Term
rotation
Definition
circular movement around an axis
Term
combining form for cell
Definition
cyt/o
Term
cytology
Definition
study of cells
Term
protoplasm
Definition
cell membrane, cytoplasm, and nucleus
Term
cell membrane
Definition
structure lining the cell that protects the cell's contents and regulates what goes in and out of the cell
Term
cytoplasm
Definition
gelatinous material located in the cell membrane that is not part of the nucleus
Term
nucleus
Definition
structure in cell that contains nucleoplasm, chromosomes, and the surrounding membrane
Term
nucleoplasm
Definition
material of the nucleus
Term
chromosomes
Definition
structures in nucleus composed of DNA, which transmit genetic info
Term
genetic disorder
Definition
any inherited disease or condition caused by defective genes
Term
congenital
Definition
denotes something present at birth
Term
anomaly
Definition
deviation from what is regarded as normal
Term
tissue
Definition
group of specialized cells that is similar in structure and function
Term
histology
Definition
study of the structure, composition, and function of tissue
Term
epithelium tissue or epithelium
Definition
covers internal and external body surfaces and is made up of tightly packed cells in a variety of arrangements
Term
endothelium
Definition
type of epithelium that is a cellular covering that forms the lining of the internal organs, including blood vessels
Term
mesothelium
Definition
type of epithelium that is the cellular covering that forms the lining of serous membranes such as the perotoneum
Term
connective tissue
Definition
adds support and structure to the body by holding the organs in place and binding body parts together
Term
adipose
Definition
type of connective tissue; fat
Term
combining for for fat
Definition
adip/ o
Term
muscle tissue
Definition
contains cell material with the specialized ability to contract and relax
Term
three types of muscle tissue:
Definition
1. skeletal
2. smooth
3. caridac
Term
nervous tissue
Definition
contains cells with the specialized ability to react to stimuli and conduct electrical impulses
Term
-plasia
Definition
suffix used to describe formation, development, and growth of tissue and cell NUMBERS
Term
-trophy
Definition
suffix that means formation, development, and increase in the SIZE of tissue and cells
Term
anaplasia
Definition
change in the structure of cells and their orientation to each other
Term
aplasia
Definition
lack of development of an organ or a tissue or a cell
Term
dysplasia
Definition
abnormal growth or development of an organ, tissue, or cell
Term
hyperplasia
Definition
abnormal increase in the number of normal cells in normal arrangement in an organ, tissue, or cell
Term
hypoplasia
Definition
incomplete or less than normal development of an organ, tissue or cell
Term
neoplasia
Definition
any abnormal new growth of tissue in which multiplication of cells is uncontrolled, more rapid than normal, and progressive; usually form tumor
Term
tumor
Definition
distinct mass of tissue
Term
benign
Definition
not recurring
Term
malignant
Definition
tending to spread and be life threatening
Term
-oma
Definition
suffix that means tumor or neoplasm
Term
atrophy
Definition
decrease in size or complete wasting of an organ, tissue, or cell
Term
dystrophy
Definition
defective growth in the size of an organ, tissue, or cell
Term
hypertrophy
Definition
increase in hte size of an organ, tissue, or cell
Term
glands
Definition
groups of specialized cells that secrete material elsewhere in the body
Term
combining form for gland
Definition
aden/ o
Term
2 categories of glands:
Definition
exocrine and endocrine
Term
exocrine glands
Definition
groups of cells that secrete their chemical substances into ducts that lead out of the body or to another organ
Term
endocrine
Definition
groups of cells that secrete their chemical substances directly into the bloodstream, which transports them throughout the body
Term
organ
Definition
part of the body that performs a special function or functions
Term
cf of bones (3)
Definition
oste/o
oss/ e
oss/ i
Term
cf of joints
Definition
arthr/ o
Term
cf of cartilage
Definition
chondro/ o
Term
cf of muscles
Definition
my/ o
Term
cf of fascia (2)
Definition
fasc/ i
fasci/ o
Term
cf of tendons (3)
Definition
ten/o
tend/o
tendin/o
Term
cf of heart
Definition
cardi/o
Term
cf of arteries
Definition
arteri/o
Term
cf of veins (2)
Definition
ven/o
phleb/o
Term
cf of blood (2)
Definition
hem/o
hemat/o
Term
cf of lymph vessels, fluid, and nodes
Definition
lymph/o
Term
cf of tonsils
Definition
tonsill/o
Term
cf of spleen
Definition
splen/o
Term
cf of thymus
Definition
thym/o
Term
cf of nose or nares (2)
Definition
nas/o
rhin/o
Term
cf of pharynx
Definition
pharyng/o
Term
cf of trachea
Definition
trache/o
Term
cf of larynx
Definition
laryng/o
Term
cf of lungs (2)
Definition
pneum/o
pneumon/o
Term
cf of mouth (2)
Definition
or/o
stomat/o
Term
cf of esophagus
Definition
esophag/o
Term
cf of stomach
Definition
gastr/o
Term
cf of small intestine
Definition
enter/o
Term
cf of large intestine (2)
Definition
col/o
colon/o
Term
cf of liver
Definition
hapat/o
Term
cf of pancreas
Definition
pancreat/o
Term
cf of kidneys (2)
Definition
ren/o
nephr/o
Term
cf of ureters
Definition
ureter/o
Term
cf of urinary bladder
Definition
cyst/o
Term
cf of urethra
Definition
urethr/o
Term
cf of nerves (2)
Definition
neur/o
neur/i
Term
cf of brain
Definition
encephal/o
Term
cf of spinal cord
Definition
myel/o
Term
cf of eyes (4)
Definition
ophthalm/o
ocul//o
opt/o
opt/i
Term
cf of sight
Definition
optic/o
Term
cf of ears (5)
Definition
ot/o
aur/i
aur/o
audit/o
aud/i
Term
cf of external ear (sound) (2)
Definition
acoust/o
acous/o
Term
skeletal system
Definition
support and shape, protection, hematopoiesis, mineral storage
Term
muscular system
Definition
locomotion, movement of body fluids, body heat generation
Term
cardiovascular system
Definition
delivers oxygen and nutrients to tissue, transports cellular waste from body, performs immune function and endocrine function
Term
lymphatic and immune systems
Definition
provide nutrients to and remove waste from tissues, protect the body from harmful substances
Term
respiratory system
Definition
brings oxygen into the body for transportation to the cells, removes carbon dioxide and some water waste from the body
Term
digestive system
Definition
digestion of ingested food, absorption of digested food, elimination of solid waste
Term
urinary system
Definition
filters blood to remove waste, maintains electrolyte balance, regulates fluid balance
Term
nervous system and special senses
Definition
coordinating mechanism, reception of stimuli, transmission of messages
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