control of heart rate Flashcards
1
Q
what kind of reaction is the heart
A
myogenic
2
Q
what is myogenic
A
contraction initiated from within the muscle itself
3
Q
where does the control of the heart rate come from
A
medulla oblongata
4
Q
an increase in heart rate linked to
A
linked to sinoatrial node (SA) by the parasympathetic nervous system
5
Q
a decrease in heart rate linked to
A
linked to sinoatrial node(SA) node by the parasympathetic nervous system
6
Q
what is an increase or decrease of heart rate cause by
A
pressure changes in the blood
changes of ph in the blood
7
Q
how are chemicals in the blood detected
A
by chemo receptors in carotid arteries
8
Q
how is pressure in the blood detected
A
by pressure receptors in carotid arteries and aorta
