The Body Flashcards
abdomen
space below the chest that contains organs such as the stomach, liver, intestines, and gallbladder. Lies between the diaphragm and the pelvis
adenoids
enlarged lymphatic tissue in the upper part of the throat near the nasal passageways
adnexa uteri
accessory structures of the uterus (ovaries and fallopian tubes)
adrenal cortex
outermost part of the adrenal gland. Secretes steroid hormones such as glucocorticoids (cortisone)
adrenal glands
two endocrine glands, each above a kidney. Produce hormones such as adrenaline (epinephrine) and hydrocortisone (cortisol)
adrenaline
hormone secreted by the adrenal glands. Released into bloodstream in response to stress, such as from fear or physical injury. Also known as epinephrine
adrenocorticotropic hormone
hormone secreted by the pituitary gland. Stimulates the adrenal gland (cortex or outer region) to secrete the hormone cortisone. Also called ACTH
albuminuria
albumin (protein) found in urine; it indicates a malfunction of the kidney
Air sacs
thin-walled sacs within the lung. Inhaled oxygen passes into the blood from the sacs, and carbon dioxide passes out from the blood into the sacs to be exhaled
albumin
a large-molecule protein found in blood and tissues
alkaline phophatase
an enzyme present in blood and body tissues, such as bone and liver. Elevated in diseases such as those of bone and liver
alveolar
pertaining to air sacs (alveoli) within the lungs
alveolus
an air sac within the lung
androgen
hormone that controls the development of masculine characteristics
angiotensin
hormone that is a powerful vasoconstrictor and raises blood pressure
anterior
located in the front
aorta
largest artery, leads from lower left chamber of heart to arteries all over the body
apex
pointed end of an organ
appendix
small sac that hangs from the juncture of the small and large intestines in the right lower quadrant of the abdomen
arachnoid membrane
the middle membrane of the meninges
arteriole
small artery
artery
largest blood vessel, carry blood away from heart
AST
aspartate transferase, enzyme normally present in blood and tissues such as heart and liver
atrium
upper chamber of the heart
auditory canal
passageway leading into ear from outside of body
auditory nerve
nerve that carries messages from the inner ear to the brain
aural discharge
fluid or material from the ear
axial
pertaining to an axis. Axial views are seen in CT and MRI scans
axillary
pertaining to the armpit or underarm
bilateral
pertaining to two sides
bile
yellow or orange fluid produced by the liver. Breaks up large fat globules and helps in digestion of fats
bile duct
tube that carries bile from the liver and gallbladder to the intestine
bilirubin
a red blood cell pigment excreted with bile from the liver into the intestine (released from hemoglobin breakdown and processed in the liver)
bone
hard, rigid type of connective tissue that makes up most of the skeleton
bone marrow
soft, sponge-like material in inner part of bones
bronchial tube
one of two tubes that carry air from the trachea to the lungs
bronchiole
small bronchial tube
bursa
sac of fluid near a joint
calcaneus
heel bone
callus
bony deposit formed between and around the broken ends of a fractured bone. Also, a painless thickening of skin cells in areas of external pressure or friction
capillary
smallest blood vessel
carpals
wrist bones
cartilage
flexible, fibrous connective tissue, found as part of the nose, ears, trachea, larynx and chiefly attached to bones at joints
cauda equina
bundle of nerve fibers and nerve roots extending from the end of the spinal cord (L3) to the sacral and coccygeal nerves (latin for horse’s tail, which describes its appearance)
cephalic
pertaining to the head
caudal
pertaining to the tail or the lower portion of the body
cerebellum
lower, back part of brain that coordinates muscle movement and balance
cerebrospinal fluid
fluid surrounding the brain and spinal cord
cerebrum
largest part of brain, controls thought processes, hearing, speech, vision and body movements
cervical
pertaining to the neck of the body or the neck of the uterus
cervical region/cervical vertebra
seven backbones in area of the neck
cholesterol
fatty substance made in the liver and found in the bloodstream. Important part of all cells and is necessary for creating hormones. It may accumulate in the lining of arteries, such as in the heart, causing heart disease, or in the gallbladder to form gallstones. Normal adult levels are 120 to 200 mg/dL
clavicle
collarbone
coccygeal
pertaining to the tailbone (coccyx)
coccygeal region
four fused bones at the base of the spinal column
connective tissue
fibrous tissue that supports and connects internal organs, bones, and walls of blood vessels
corium
middle layer of the skin below the epidermis; (dermis)
cornea
transparent layer over the front of the eye; bends light to focus it on sensitive cells at the back of the eye
coronary arteries
blood vessels that carry oxygen-rich blood from the aorta to the heart muscle
cortex
outer part of an organ
costochondral
pertaining to a rib and its cartilage
cranial cavity
space surrounded by the skull and containing the brain and other organs
creatinine
nitrogen-containing waste that is removed from the blood by the kidney and excreted in urine
cross-section
division of an organ or the body into upper and lower portions (transverse plane)
cusp
any one of the small flaps on the valves of the heart. Also, a sharp projection extending from the surface of a tooth
dermal
pertaining to the skin
dermis
fibrous mdidle layer of the skin below the epidermis. Contains nerves and blood vessels, hair roots, and oil and sweat glands
diaphragm
muscle that separates the chest from the abdomen
disk
pad of cartilage that is between each backbone
diverticula
small pouches or sacs created by herniation of mucous membrane linings, most commonly in the colon
duodenal
pertaining to the duodenum
duodenum
first part of the small intestine
dura mater
outermost of the three layers of the meninges surrounding the brain and the spinal cord. Toughest of the three layers
eardrum
membrane separating the outer and middle parts of the ear; the tympanic membrane
electrolyte
substance that conducts an electrical current and is found in blood (serum) and body cells. Examples: sodium, potassium, calcium and chloride
embryo
organism in early stage of development, 2-6 weeks
endocrine glands
organs that produce (secrete) hormones
endoscope
instrument used to view a hollow organ or body cavity
enteric
pertaining to the small intestine
epidermis
outer layer of the skin
epiglottis
flap of cartilage that covers the mouth of the trachea when swallowing, occurs so that food cannot enter the airway
esophagus
tube leading from throat to stomach
esophageal
pertaining to the esophagus
eustachian tube
channel connecting the middle part of the ear with the throat
exocrine glands
glands that produce (secrete) chemicals that leave the body through tubes (ducts), e.g. tears, sweat
extracranial
pertaining to outside of skull
extrahepatic
pertaining to outside the liver
extrapulmonary
outside the lungs
femur
thigh bone
fetus
from 8 weeks until birth
gallbladder
sac below the liver that stores bile and delivers it to the small intestine
gland
group of cells that secretes chemicals to the outside of the body or hormones directly into the bloodstream
glial cells
supporting cells of nervous tissue in the brain. Examples include astrocytes, microglia and oligodendroglia. Source of primary brain tumors
glucocorticoid
hormone secreted by the adrenal gland (cortex) to raise blood sugar levels, e.g. cortisone and cortisol