control of heart rate Flashcards
1
Q
Cardiac muscle is myogenic. What does this mean?
A
It can contract and relax without receiving electrical impulses from nerves
2
Q
Label the sinoatrial node (SAN), atrioventricular node (AVN), Bundle of His
and Purkyne tissue on a diagram of the heart
A
3
Q
Describe the myogenic stimulation of the heart and transmission of a
subsequent wave of electrical activity
A
4
Q
Where are chemoreceptors and pressure receptors located?
A
Chemoreceptors and pressure receptors are located in the aorta and carotid arteries
5
Q
A
6
Q
Describe the roles of chemoreceptors, pressure receptors, the autonomic nervous system and effectors in controlling heart rate
A
