CARDIOVASCULAR SYSTEM Flashcards
(18 cards)
additional factors of Cardio vascular system
- sudden arrhythmic death syndrome (SADS)
- high/low BP
- hyper/hypothermia
structure of the artery
- away from the heart
- oxygenated blood
- high pressure
- thick walls
structure of the capillary
- high pressure
- in the tissues
- very thin walls
- gaseous exchange
structure of the vein
- back to the heart
- deoxygenated blood
- thin walls
- low pressure
-valves
5 functions of the cardiovascular system
- delivery of oxygen and nutrients
- remove waste products
- thermoregulation
- fight infection
- clot blood
7 adaptations to exercise
- 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
5 responses to exercise
- increased heart rate
- increased cardiac output
- increased blood pressure
- redirection of blood flow
- anticipatory increase in heart rate prior to exercise
4 nervous control of the cardiac cycle
- sinoatrial node
- atrioventricular node
- bundle of His
- purkinje fibres
where is the sinoatrial node
near the right atrium near the venacava
what does the sinoatrial node do
triggers atrial systole
where is the atrioventricular node
in the septum near atria
what does the atrioventricular node do
delays then conducts though to ventricles
where is the bundle of his
in the septum
what does the bundle of his do
conducts to base of ventricles
where is the purkinje fibres
ventricular walls
what do the purkinje fibres do
conducts up ventricular walls
what does the parasympathetic system do
it calms
how does the parasympathetic system calm
it decreases: heart rate, cardiac output and blood pressure
