ANS Phys Flashcards

1
Q

Somatic NS involves (voluntary)

A

-Skeletal muscle
-only ONE motor neuron
-Consciously perceived senations
-can only excite
-NO ganglia

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2
Q

ANS Involvement (involuntary)

A

-Innervates cardiac and smooth muscle glands
-2 motor neurons
-unconsciously senses visceral sensations
-can excite or inhibit
-HAS ganglia

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3
Q

where are the sympathetic chain ganglia found?

A

parallel to the vertebral column

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4
Q

Sympethetic prevertebral/collateral ganglia are found

A

anterior to vertebral column near large abdominal arteries

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5
Q

The sympathetic NS connects to the adrenal medulla via:

A

Modified ganglia

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6
Q

parasympathetic terminal/intramural ganglia are found

A

near or in the wall of the organ it innervates

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7
Q

Location of the sympathetic NS

A

T1-L2 in the lateral grey horns

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8
Q

the location of the parasympathetic NS

A

Cranial nerves III, VII, IX, X and sacral lateral grey horns

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9
Q

Preganglionic length in the SNS

A

Short

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10
Q

Preganglionic Length in the PNS

A

Long

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11
Q

Post ganglionic length in SNS

A

Long

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12
Q

Post ganglionic length in the PNS

A

Short

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13
Q

SNS Neurotransmitter of postganglionic neuron

A

Norepinephrine NE

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14
Q

PNS Neurotransmitter of postganglionic neurons

A

acetlycholine ach

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15
Q

SNS =

A

Fight or flight responce

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16
Q

PNS =

A

Rest and digest

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17
Q

The adrenal medulla receives stimulation from:

A

sympathetic preganglionic fibers

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18
Q

Autonomic nervous system preganglionic fibres are

A

myelinated type B fibers

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19
Q

White rami communicantes are so named since:

A

autonomic preganglionic neurons are myelinated

20
Q

Where are the sympathetic chain ganglia found?

A

on either side of the spine close to the vertebrae

21
Q

Which neurotransmitter is used to stimulate the effectors in the sympathetic division of the ANS?

A

norepinephrine

22
Q

What is the major type of sensory information that is monitored by the Autonomic nervous system?

A

sensations from the visceral/internal organs

23
Q

Parasympathetic ganglia are known as

A

as terminal ganglia.

24
Q

The cell bodies of some parasympathetic central neurons are located:

A

in the brain stem.

25
Q

The sympathetic ganglia that lie close to large abdominal arteries and anterior to vertebral column are the:

A

prevertebral ganglia

26
Q

The concept that most internal organs receive innervation from both the sympathetic and parasympathetic nervous systems is called:

A

dual innervation

27
Q

Which structures receive sympathetic innervation from the superior cervical ganglia?

A

the head

28
Q

The motor impulses from the ANS innervate which of the following?

A

cardiac muscle, smooth muscle, and glands

28
Q

Effectors innervated by the parasympathetic nervous system are stimulated by which neurotransmitter.

A

acetylcholine

29
Q

How many sets of neurons are found in each autonomic motor pathway?

A

2

30
Q

Which of the following responses is initiated by the sympathetic nervous system?

A

increased synthesis of ATP

31
Q

The post ganglionic fibres in the ANS are what type of fibres?

A

Type C

32
Q

When the parasympathetic system is active it decreases the activity of which of the following organs.

A

heart

33
Q

What does “SLUDD” stand for in regards of the parasympathetic nervous system:

A

salivation, lacrimation, urination, digestion, defecation

34
Q

Parasympathetic innervation to the distal colon, the bladder and the reproductive organs is supplied by which of the following:

A

sacral nerves

35
Q

The cranial nerves involved in the parasympathetic system are:

A

III, VII, IX, X

36
Q

Postganglionic fibers that innervate sweat glands, arrector pili muscles, blood vessels to skin and skeletal muscles travel with which structure?

A

spinal nerves

37
Q

Where are the central neurons cell bodies of the sympathetic division of the ANS found?

A

T1 to L2

38
Q

A single sympathetic preganglionic fiber may synapse with

A

twenty or more postganglionic fibers.

39
Q

The arrector pili, sweat glands and adipose cells only receive innervation from the

A

sympathetic nervous system.

40
Q

Parasympathetic stimulation to the liver, stomach and gallbladder is provided by fibers travelling with the:

A

vagus nerve

41
Q

Which of the following is supplied with sympathetic innervation by way of the splanchnic nerves from the prevertebral ganglia?

A

abdominal viscera

42
Q

Autonomic central neurons synapse with ganglionic neurons:

A

in ganglia

43
Q

The major control and integration centre for the autonomic nervous system is the:

A

hypothalamus

44
Q

The postganglionic fibers of the sympathetic division of the ANS are short or long?

A

long

45
Q

two divisions of the ans

A

sympathetic and parasympathetic