Cardiovascular system- Cardiac Conduction System

Question 1

Cardiac conduction system summarised (acronym)

Answer 1

S- SAN
A- atrial systole
A- AVN
B- Bundle of His
P- Purkinje fibres 
V- Ventricular systole

Sally Always Aims Balls Past Vicky

Question 2

Factors affecting the change in rate of the conduction system- Sympathetic nervous system

Answer 2

A part of the autonomic nervous system that speeds up heart rate

Question 3

Factors affecting the change in rate of the conduction system- parasympathetic nervous system

Answer 3

Part of the autonomic nervous system that decreases heart rate

Question 4

Factors affecting the change in rate of the conduction system- medulla oblongata

Answer 4

The most important part of the brain as it regulates processes that keep us alive such as breathing and heart rate

Question 5

Factors affecting the change in rate of the conduction system- chemoreceptors

Answer 5

Tiny structures in the cartoid arteries and aortic arch that detect changes in bloody acidity caused by an increase or decrease in the concentration of CO2
Chemoreceptors- detect for increase in CO2- increase in heart rate

Question 6

Factors affecting the change in rate of the conduction system- Baroreceptors

Answer 6

Baroreceptors- increase in blood pressure- decrease in HR

Question 7

Factors affecting the change in rate of the conduction system- proprioceptors

Answer 7

Proprioceptors- increase in muscle movement- increase in heart rate