Exam 1 Definintions

Question 1

Depolarization

Answer 1

A reduction in the voltage across a muscle cell membrane from its normal resting membrane potential. Results in a action membrane potential (the contraction of a muscle )

Question 2

Cardiac output

Answer 2

Volume of blood that is ejected out of the left ventricle over a unit of time

Question 3

Chemotaxis

Answer 3

Process that attracts neutrophils to inflammatory chemicals at site of infection

Question 4

Diapedesis

Answer 4

Process used by neutrophils to go from circulation into tissue spaces

Question 5

Preload

Answer 5

A factor determining SV. It is the Volume of blood received from atrium

Question 6

Afterload

Answer 6

A factor determining SV. It is the physical resistance by the artery the ventricle is ejecting blood into

Question 7

Stroke volume (SV)

Answer 7

The volume of blood ejected from the left ventricle during systole. Also called systolic discharge

Question 8

Heart rate

Answer 8

of times the ventricle beats in 1 min

Question 9

Megakaryocyte

Answer 9

Large multinucleated cell that never leaves the bone marrow