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BI 121 > Autonomic Nervous System > Flashcards

Autonomic Nervous System Flashcards

1
Q

How many neurons reach the effector in the somatic nervous system?

A

1

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2
Q

What types of neurotransmitters are in the somatic nervous system?

A

ACh

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3
Q

How many neurons reach the effector in the autonomic nervous system?

A

2+

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4
Q

Nervous system that is only excitatory

A

Somatic

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5
Q

Nervous system that is excitatory and inhibitory

A

Autonomic

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6
Q

What are the 2 efferent divisions of the Autonomic nervous system?

A

Sympathetic and parasympathetic

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7
Q

Where are autonomic ganglia located in the sympathetic division?

A

Near spinal cord

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8
Q

Where are autonomic ganglia located in the parasympathetic division?

A

Near target organ

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9
Q

What type of neurotransmitter is released in the preganglionic sympathetic division? Postganglionic?

A

ACh; N or NE

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10
Q

What type of neurotransmitter is released in the preganglionic parasympathetic division? Postganglionic?

A

ACh; ACh

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11
Q

Receptors that are stimulated by ACh

A

Cholinergic

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12
Q

Receptors that are stimulated by N or NE

A

Adrenergic

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13
Q

What are the 2 types of adrenergic receptors?

A

Alpha and beta

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14
Q

What are the 2 types of cholinergic receptors?

A

Nicotinic, muscarinic

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15
Q

Chemically gated ion channels; ACh always excites the postsynaptic cell with these receptors

A

Nicotonic

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16
Q

Stimulation activates a G-protein which activates or inactivates enzymes within the cell; longer lasting effects

A

Muscarinic

17
Q

What happens to heart rate in the sympathetic? Parasympathetic?

A

Increase, decrease

18
Q

What happens to the diameter of lungs in the sympathetic? Parasympathetic?

A

Dilate, constrict

19
Q

What happens to the GI and urinary tract sphincters in the sympathetic? Parasympathetic?

A

Constrict, dilate

20
Q

What happens to the diameter of blood vessels in the sympathetic? Parasympathetic?

A

Constrict or dialte; none

21
Q

Mechanoreceptors that monitor change in pressure

A

Baroreceptors

22
Q

Sensitive to change in pH and CO2/O2 in blood

A

Chemoreceptors

23
Q

What are the 5 special senses?

A

Olfaction, gustation, hearing, vision, equilibrium

24
Q

What 2 special senses must have stimulating molecules that must be dissolved?

A

Olfaction and gustation

25
Q

What special sense is the most debilitating to lose?

A

Equilibrium

BI 121 (28 decks)

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