Cardiovascular System- Anatomy And Physiology

Front 1

autonomic nervous system (ANS)

Back 1

Portion on the nervous system that regulates involuntary actions, such as hear rate, digestion, and peristalsis.

Front 2

leaflet

Back 2

Flat, leaf-shaped structure that makes up the valves of the heart and prevents backflow of blood.

Front 3

lumen

Back 3

Tubular space or channel within an organ or structure of the body; space within an artery, vein, intestine, or tube.

Front 4

regurgitation

Back 4

Backflow or ejecting of contents through an opening.

Front 5

sphincter

Back 5

Circular muscle found in a tubular structure or hollow organ that constricts or dilates to regulate passage of substances through its opening.

Front 6

vasoconstriction

Back 6

Narrowing of the lumen of a blood vessel that limits blood flow, usually as a result of diseases, medications, or physiological processes.

Front 7

vasodilation

Back 7

Widening of the lumen of a blood vessel caused by the relaxing of the muscle of the vascular walls.

Front 8

viscosity

Back 8

State of being sticky or gummy.