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bioscience > Peripheral Nervous System > Flashcards

Peripheral Nervous System Flashcards

1
Q

What is a neuromuscular junction?

A

A synaptic connection between the terminal end of a motor nerve and a muscle

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2
Q

What makes up the peripheral nervous system

A

Nerves that belong to the somatic and autonomic nervous systems

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3
Q

How many pairs of spinal nerves leave the verterbrae canal?

A

31

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4
Q

How many pairs of nerves does the cervical section of the spine have?

A

8

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5
Q

How many pairs of nerves does the throacic section have?

A

12

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6
Q

How many pairs of nerves does the lumbar section have?

A

5

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7
Q

How many pairs of nerves does the sacral section have?

A

5

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8
Q

How many pairs of nerves does the coccygeal section have?

A

one

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9
Q

What is each nerve formed by?

A

The union of a motor and a sensory nerve root, making it a mixed nerve.

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10
Q

How many pairs of thoracic nerves are there?

A

12, the first 11 are intercoastal nerves which pass between the ribs, the 12th are subcostal nerves.

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11
Q

What do the 7th - 12th thoracic nerves also do?

A

Supply the muscles and the skin of the posterior and anterior abdominal walls.

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12
Q

How many cranial nerves are there?

A

12

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13
Q

What does the autonomic nervous system do?

A

controls involuntary body functions.

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14
Q

What are the sections of the autonomic nervous system?

A

Sympathetic and Parasympathetic.

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15
Q

What do the two sections do?

A

Work in an intergrated and contemplementary manner to maintain involuntary functions and homeostasis.

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16
Q

Is the effects of autonomic activity rapid?

A

Yes

17
Q

What are the effector organs of the autonomic system?

A

Smooth muscle, cardiac muscle, glands.

18
Q

In the CNS what are a bundle of nerve fibres called?

A

tracts

19
Q

What is the endoneurium regarding nerves?

A

Delicate tissue surrounding each nerve fibre.

20
Q

What is the perineurium regarding nerve fibres?

A

Smooth connective tissue surrounding each bundle of fibres.

21
Q

What is the epineurium regarding nerve fibres?

A

Fibrous tissue surrounding and enclosing several branches of nerve fibres. Most large nerves are covered by epineurium.

22
Q

What is the sympathetic nervous system?

A

Controls fight or flight response, prepares the body for strenous acitivites.

23
Q

What is the parasympathetic nervous system?

A

Regulates rest and digestive functions

24
Q

How many neurons are involved in the transmission of impulses to the effector organs in the parasympathetic nervous system?

A

2 - preganglionic and postganglionic

bioscience (9 decks)

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