17. Regulation of Arterial Pressure Flashcards

1
Q

What is the equation for mean arterial pressure?

A

MAP = Cardiac Output x Total Peripheral Resistance

(Cardiac Output = HR x Stroke Volume)

(Stroke Volume = EDP - ESP)

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2
Q

What cranial nerve is associated with baroreceptors in the carotid sinus?

A

CN IX

Glossopharyngeal

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3
Q

What nerurotransmitter is associated with the nucleus tractus solitarius?

A

Glutamate

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4
Q

What is the rostral ventrolateral medulla in charge of?

A

Sending sympathetic signals to the heart as a part of the baroreceptor reflex.

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5
Q

What two regions of the brain stem are in charge of sending parasympathetic nerve fibers to the heart as a part of the baroreceptor reflex?

A

Dorsal motor nucleus of the vagus

Nucleus abmbiguus

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6
Q

What is the highest mean arterial pressure that the carotid bodies can report?

A

About 200 mmHg

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7
Q

What stimulates renin to be produced by the kidneys?

A

Low BP

Beta 1 adrenergic receptor activation

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8
Q

What four things does Angiotensin II do to increase blood pressure?

A

Contracts smooth muscle via the AT1 receptor

Causes secretion of aldosterone

Causes secretion of antiduretic hormone

Increases thirst

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9
Q

What stimulates the release of natriuretic hormone?

A

Excessive preload

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10
Q

What does natriuretic peptide do?

A

Dilates the arterioles

Increases fluid loss

Inhibits renin

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11
Q

What does the body do as a response to increased blood volume?

A

Increase secretion of atrial natriurietic peptide

Decreases aldosterone secretion

Renal vasodilation occurs

Increases heart rate

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