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PNS > FINAL June 2013 > Flashcards

FINAL June 2013 Flashcards

1
Q

Compared to unmyelinated axons, myelinated axons:

A

Conduct impulses faster

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2
Q

Which nerve passes posterior to the medial epicondyle of the humerus?

A

Ulnar

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3
Q

Which is the “blind spot” of the eye?

A

the starting point of the optic nerve

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4
Q

Which nerve runs with the hypoglossal nerve?

A

Geniohyoid

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5
Q

All of the following are mechanoreceptors EXCEPT?

A. follicular receptor
B. thermoreceptor
C. Pacinian corpuscle
D. Meissner’s corpuscle

A

Thermoreceptor

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6
Q

Which is the fluid in the scala tympani?

A

Perilymph

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7
Q

What are the structures coming directly out from the spinal cord?

A

Rootlets

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8
Q

Neurons that conduct nerve impulses form the receptors to the central nervous system are?

A

Sensory

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9
Q

What dermatome is at the umbilicus?

A

T10

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10
Q

The end of the paravertebral ganglion is the?

A

Ganglion impar

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11
Q

Which fibre type responds to stretch (as in the knee tap reflex?)

A

Alpha

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12
Q

The elongate nerve roots from L2-S2 are called?

A

cauda equina

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13
Q

What cranial nerve derives presynaptic parasympathetic fibres in abdominal viscera?

A

vagus

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14
Q

Which muscle is innervated by 2 branches of ansa cervicalis?

A

Omohyoid

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15
Q

The glossopharyngeal nerve provides parasympathetic innervation to the?

A

Carotid Gland

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16
Q

Loss of cutaneous sensation and paralysis of muscle on the medial plantar side of the foot indicates damage of which nerve?

A

Tibial

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17
Q

The sympathetic division of the ANS is also referred to as?

A

Thoracolumbar division

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18
Q

The greater occipital nerve is derived from the?

A

Dorsal rams of C2

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19
Q

Which nerve pierces the anterior surface of the psoas major, runs inferiorly, and innervates the genitalia and femoral triangle?

A

Genitofemoral

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20
Q

The tympanic nerve is a branch from which cranial nerve?

A

Trigeminal

21
Q

What type of fibres are in the main facial root (facial root proper)

A

Motor

22
Q

What nerve provides the preganglionic GVE innervation to the submandibular ganglion?

A

Chordae tympani

23
Q

Which range of spinal cord segments contribute to the cervical plexus?

A

C1-C4

24
Q

Crossed effects are associated with which reflex?

A

Withdrawal

25
Q

Which fibre transmits signals the slowest?

A

C

26
Q

What is the connective tissue laye that encloses a nerve?

A

endoneurium

27
Q

“special” functional components get their name because

A

They are derived from the pharyngeal arches

28
Q

Which nerve roots form the lumbosacral trunk?

A

L4, L5

29
Q

Satellite cells:

A. Myelinate dendrites
B. Line ventricles
C. Line capillaries
D. Surround neuronal cell bodies

A

Surround neuronal cell bodies

30
Q

Compensatory eye movement is stimulated by activating the?

A

Superior Olive

31
Q

Which of the following is false?

A. The fibres from the lateral half of the retinal cross at the optic chasm
B. The optic nerve exits the orbit through the optic canal
C. The fibres that are in the optic nerve are myelinated
D. The optic nerve is surrounded by the three meninges

A

A. The fibres from the lateral half of the retinal cross at the optic chasm

32
Q

Which organelle produces glycoproteins and lysosomes

A

Golgi Body

33
Q

Where are the olfactory (receptor) nerves?

A

Nasal epithelia

34
Q

The junction between two nerve cells is called?

A

Synapse

35
Q

Which supraclavicular branch is also known as the anterior branch?

A

Medial

36
Q

What cranial opening does the trochlear nerve pass through?

A

SOF

37
Q

A patient comes in, having burned the tip of his tongue. What nerve was stimulated?

A

Trigeminal

38
Q

Which nerve carries the motor component of the trigeminal nerve?

A

Mandibular

39
Q

What is in the epidural space surrounding the spinal cord?

A

Fat

40
Q

The pudendal nerve originates from the anterior division of?

A

S2-S4

41
Q

What root(s) contributes to the phrenic nerve

A

C3-C5

42
Q

The ciliary body is in the same optic layer as?

A

The choroid

43
Q

What cranial opening does the vagus nerve pass through to exit the skull?

A

Jugular Foramen

44
Q

The olfactory tract are the axons of which cells?

A

Mitral

45
Q

Which nerve branches directly from a root?

A

Long thoracic

46
Q

Which roots contribute to the radial nerve?

A

C5-T1

47
Q

Which cranial nerve exits caudal to the inferior colliculus?

A

Trochlear

48
Q

Which is a vagus nerve ganglion?

A

nodose

49
Q

What ganglion does the preganglionic parasympathetic fibres of the oculomotor nerve synapse in?

A

Ciliary

PNS (4 decks)

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