Quiz 3 Flashcards
abdominal cavity
body space that houses the stomach, liver, pancreas, gallbladder, spleen and kidneys
acidosis
A dangerous condition in which the pH of the blood is abnormally low (acidic)
adipose
pertaining to fat
alkalosis
A dangerous condition in which the pH of the blood is abnormally high (alkaline)
alveoli
The air sacs of the lungs in which the exchange of oxygen and carbon dioxide takes place.
amylase
digestive enzyme in saliva
anabolism
conversion of simple compounds into complex substances
anatomic position
The position of reference in which the patient stands facing you, arms at the side, with the palms of the hands forward.
anatomy
The study of body structure
avascular
without blood or lymph vessels
axons
Threadlike fibers that carry messages away from the nerve cell body
body cavities
spaces within the body that contain vital organs
body plane
flat surface along which the body or structure may be cut for anatomical study
bronchi
two short branches located at the lower end of the trachea that carry air into the lungs.
bursa
fluid-filled sac that allows for easy movement of one part of a joint over another
cartilage
type of hard, nonvascular connective tissue
catabolism
the breakdown of complex substances into simpler ones, including the digestion of food
cranial cavity
contains the brain
dendrites
structures that carry messages to the nerve cell body
DNA
the main component of chromosomes
dermis
thickest layer of skin composed of elastic and fibrous connective tissue
diaphragm
dome-shaped muscle that separates the thoracic cavity from the abdominal cavity
distal
farthest from the point of attachment
dorsal
at the back of the body or body part
endocrine glands
glands that secrete hormones directly into the bloodstream
epidermis
Outermost and thinnest layer of the skin
EPO
hormone that stimulates red blood cell production
exocrine glands
glands that secrete substances through ducts
external respiration
exchange of respiratory gases in the lungs
frontal (coronal) plane
divides body into front and back
gametes
sex cells
genes
DNA segments that serve as the key functional units in hereditary transmission.
genome
complete set of DNA containing all genes of the 23 pairs of it that contain all the information needed to build and maintain a human being
GI tract
stomach and intestines
glomerulus
capillaries that filter water and disolved substances, including wastes, from the blood
Glucagon
hormone that stimulates the liver to release glucose into the bloodstream
hemopoiesis
production of blood, especially its formed elements
homeostasis
A tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level
hormones
chemical substances that affect many body processes
IRDS
condition caused by lack of surfactant in the lungs
insulin
pancreatic hormone required to move glucose into the cells
integument
covering or skin
internal respiration
exchange of respiratory gases between the blood and cells in the tissues
kidneys
organs that form and excrete urine
larynx
medical term for voice box
lipase
digestive enzyme secreted by the the pancreas
lumbar puncture
procedure in which a physician inserts a special needle into the spinal cavity to extract spinal fluid
meninges
connective tissue that encloses the brain and spinal cord
metabolism
sum of all physical and chemical reactions that sustain life
midsagittal (medial) plane
divides the body vertically into equal right and left portions
mitosis
process by which cells divide
nephron
functional unit of the kidney
neurons
fundamental working units of the nervous system
nucleus
command center of a cell that contains the chromosomes that govern all cell activities
papillae
give rise to ridges and grooves that form the fingerprints
pelvic cavity
body space that houses the reproductive organs
peristalsis
wavelike contractions of intestinal muscles that help move food through the system
pharynx
throat; passageway for food to the esophagus and air to the larynx