CARDIOVASCULAR SYSTEM Flashcards
1
Q
additional factors of Cardio vascular system
A
- sudden arrhythmic death syndrome (SADS)
- high/low BP
- hyper/hypothermia
2
Q
structure of the artery
A
- away from the heart
- oxygenated blood
- high pressure
- thick walls
3
Q
structure of the capillary
A
- high pressure
- in the tissues
- very thin walls
- gaseous exchange
4
Q
structure of the vein
A
- back to the heart
- deoxygenated blood
- thin walls
- low pressure
-valves
5
Q
5 functions of the cardiovascular system
A
- delivery of oxygen and nutrients
- remove waste products
- thermoregulation
- fight infection
- clot blood
6
Q
7 adaptations to exercise
A
- cardiac hypertrophy
- increase in resting and exercising stroke volume
- decrease in resting heart rate
- capillarisation of skeletal muscle and alveoli
- reduction in resting blood pressure
- decreased heart rate recovery time
- increased blood volume
7
Q
5 responses to exercise
A
- increased heart rate
- increased cardiac output
- increased blood pressure
- redirection of blood flow
- anticipatory increase in heart rate prior to exercise
8
Q
4 nervous control of the cardiac cycle
A
- sinoatrial node
- atrioventricular node
- bundle of His
- purkinje fibres
9
Q
where is the sinoatrial node
A
near the right atrium near the venacava
10
Q
what does the sinoatrial node do
A
triggers atrial systole
11
Q
where is the atrioventricular node
A
in the septum near atria
12
Q
what does the atrioventricular node do
A
delays then conducts though to ventricles
13
Q
where is the bundle of his
A
in the septum
14
Q
what does the bundle of his do
A
conducts to base of ventricles
15
Q
where is the purkinje fibres
A
ventricular walls
