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Medical Assistant Anatomy and Physiology Terms Flashcards

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AxonThe long thread-like part of a nerve cell along which impulses are conducted.
DermisThe thick layer of skin beneath the epidermis that contains blood vessels and nerves.
MyocardiumThe muscular tissue of the heart.
SystoleThe phase of the heartbeat when the heart muscle contracts and pumps blood.
PhagocytosisThe ingestion of bacteria or other material by phagocytes.
HomeostasisThe tendency to maintain a stable, relatively constant internal environment.
VillusA small, finger-like projection that extends into the lumen of the small intestine.
AlveoliTiny air sacs in the lungs where gas exchange occurs.
NephronThe functional unit of the kidney.
GlycogenA stored form of glucose, primarily found in the liver and muscles.
PeristalsisThe involuntary constriction and relaxation of the muscles of the intestine or another canal.
HypothalamusA region of the brain that controls body temperature, hunger, and thirst.
HemoglobinA protein in red blood cells that carries oxygen.
OsteocyteA bone cell, formed when an osteoblast becomes embedded in the matrix it has secreted.
CerebellumThe part of the brain that regulates motor control and coordination.
SynapseThe junction between two nerve cells, where impulses pass by diffusion of a neurotransmitter.
DiastoleThe phase of the heartbeat when the heart muscle relaxes and fills with blood.
Synovial FluidA viscous fluid found in the cavities of synovial joints that reduces friction between the articular cartilage of synovial joints during movement.
LymphocyteA type of white blood cell involved in the immune response.
Hepatic Portal SystemThe veins that carry blood from the digestive organs to the liver.

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