Autonomic Nervous System Flashcards

1
Q

Autonomic nervous system regulates vital functions of all organs by both reflex and central nervous system control but not by…

A

Conscious control

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2
Q

The ANS consists of a System and an opposing System.

A

Sympathetic and parasympathetic

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3
Q

Each of these two systems has its own

A

Secretory neurotransmitter

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4
Q

Terminal ends of sympathetic nerves secrete . Which activates.

A

Norepinephrine, adrenergic receptors

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5
Q

The terminal parasympathetic nerve ends secrete . Which acts on.

A

Acetylcholine, cholinergic receptors

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6
Q

Sympathetic system activates

A

Beta1 receptors

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7
Q

Response if Beta 1 adrenergic receptor stimulation

A

Increased rate at SA node, increase rate of conduction, increased force of contractility, increase irritability

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8
Q

Parasympathetic system activation inhibits cardiac effects. Response is

A

Decreased SA node pacing, decreased rate, decreased force, decreased irritability

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9
Q

Sympathetic activation of alpha 1 receptors causes

A

Construction of arteries

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10
Q

Parasympathetic stimulation of cholinergic receptors causes

A

Arterial dilation

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11
Q

Severe pain or seeing ones own blood may induce

A

Reflex parasympathetic response that causes syncope

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12
Q

Standing causes

A

Sympathetic response that constricts peripheral arteries to prevent distal pooling of blood and stimulates pacing

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13
Q

An abrupt fall in blood pressure caused by failure of the compensatory mechanisms of standing

A

Orthostatic hypotension

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14
Q

Elderly patients that have increased pacing but no vasoconstriction this is called

A

Neuroscience-cardiogenic syncope

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