Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Blood flow
|
From the superior and inferior vena cava-->Rt atrium-->Tricuspid valve-->Rt ventricle-->pulmonic valve-->pulmonary arteries-->Lungs--> pulmonary capillary network-->pulmonary veins-->Lt atrium-->mitral/bicuspid valve-->Lt ventricle-->aortic valve-->aorta-->body then repeat.
|
18
|
|
|
cardiac cycle
|
The actual time sequence between ventricular contraction and ventricular relaxation.
|
18
|
|
|
The heart functions as a....
|
unit in that both atria contract simultaneously, then both ventricles contract.
|
18
|
|
|
systole
|
Also known as ventricular systole is consistent with the simultaneous contraction of the ventricles.
|
18
|
|
|
diastole
|
Synonymous with ventricular relaxation.
|
18
|
|
|
Cardiac cycle occur ever ____ seconds. Systoles last about ____ seconds and diastole last about _____ seconds.
|
0.8
0.28 0.52 Therefore diastole is longer than systole. |
19
|
|
|
stoke volume
|
The volume of blood pumped out of one ventricle of the heart in a single beat of contraction.
|
19
|
|
|
stoke volume is ~....
|
70cc per beat
|
19
|
|
|
cardiac output
|
The amount of blood pumped by the left ventricle in 1 minute. CO=SVxHR
|
19
|
|
|
preload
|
The pressure in the ventricles at the end of diastole.
|
20
|
|
|
afterload
|
The resistance against which the heart must pump.
|
20
|
|
|
Starling's law of the heart
|
The more the myocardial fibers are stretched, up to a certain point, the more forceful the subsequent contraction will be.
|
20
|
|
|
BP=
|
BP=Cardiac Output CO x peripheral vascular resistance PVR
|
20
|
|
|
A B C D=
|
Alpha Constricts, Beta Dilates
|
22
|
|
|
Alpha 1 affects
|
heart and lungs
causes vasoconstiction and bronchoconstriction |
22
|
|
|
Beta 1 affects
|
heart
increasing heart rate and contractility |
22
|
|
|
Beta 2 affects
|
Lungs and vessels
Bronchial dilation and vasodilation of vessels. |
22
|
|
|
cc=
|
cubic centimeters
|
|
|
|
The left side of the heart is a low pressure pump.
True or False |
True
|
24
|
|
|
The chief chemical neurotransmitter of the parasympathetic system is:
|
Acetylcholine
|
24
|
|
|
The chief chmical neurotransmitter of the sympathetic nervous system is:
|
Norepinephrine
|
24
|
