AS Revision Flashcards Cardiovascular System.

  • Created by: Danpc
  • Created on: 26-03-13 15:23
Diastole
Relaxation of the cardiac muscle
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Atrial Systole
Contraction of the upper chambers of the heart
2 of 20
Sino-atrial (SA) node
Structure responsible for initiating the cardiac impulse
3 of 20
Atrio-ventricular node
Structure responsible for delaying the cardiac impulse allowing the atria to finish contracting
4 of 20
Heart Rate (HR)
The number of times the heart ventricles contract per minute (bpm)
5 of 20
Stroke Volume (SV)
The volume of blood ejected from the left ventricle per beat (ml)
6 of 20
Cardiac Output (Q)
The volume of blood ejected from the left ventricle per minute, CO (Q) = HR x SV (l/min)
7 of 20
Vascular Shunt
The redistribution of cardiac output between the organs and muscles from rest to exercise
8 of 20
Starling’s Law
This states that stroke volume is dependent on venous return. An increase in venous return causes an increase in stroke volume
9 of 20
Venous Return
The return of deoxygenated blood to the heart
10 of 20
Arteriosclerosis
Loss of elasticity in the blood vessel walls which reduces their
11 of 20
Coronary Heart Disease
General term for all diseases relating to the coronary blood vessels
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Heart Attack
Total blockage of a coronary artery usually causing permanent
13 of 20
Angina
A partial blockage of a coronary artery causing chest pain
14 of 20
Atherosclerosis
Fatty plaques on the artery walls causing a narrowing of blood
15 of 20
Conduction system
this controls the cardiac cycles / involves structures that pass a cardiac impulse through the heart walls
16 of 20
Hypertension
long-term high blood pressure / this accelerates arteriosclerosis/ this increases strain on the heart
17 of 20
Pocket valves
prevent the backflow of blood / located in veins
18 of 20
Ventricular systole
type of contraction of the heart / contraction of the ventricles
19 of 20
Atrio-Ventricular (AV) node
The structure responsible for delaying the cardiac impulse transmission to the ventricles allowing atrial systole to occur.
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Other cards in this set

Card 2

Front

Atrial Systole

Back

Contraction of the upper chambers of the heart

Card 3

Front

Sino-atrial (SA) node

Back

Preview of the front of card 3

Card 4

Front

Atrio-ventricular node

Back

Preview of the front of card 4

Card 5

Front

Heart Rate (HR)

Back

Preview of the front of card 5
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