control of heart rate Flashcards

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1
Q

what kind of reaction is the heart

A

myogenic

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2
Q

what is myogenic

A

contraction initiated from within the muscle itself

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3
Q

where does the control of the heart rate come from

A

medulla oblongata

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4
Q

an increase in heart rate linked to

A

linked to sinoatrial node (SA) by the parasympathetic nervous system

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5
Q

a decrease in heart rate linked to

A

linked to sinoatrial node(SA) node by the parasympathetic nervous system

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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

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7
Q

how are chemicals in the blood detected

A

by chemo receptors in carotid arteries

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8
Q

how is pressure in the blood detected

A

by pressure receptors in carotid arteries and aorta

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