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Pns > Intro > Flashcards

Intro Flashcards

0
Q

Anterior roots carry efferent axons from cell bodies,located in the?

A

Anterior or lateral horns which attach to spinal cord by a series of rootlets

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1
Q

Anterior roots ( ventral or motor roots) carry what axons?

A

Efferent axons

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2
Q

The posterior roots ( dorsal or sensory) carry axons from cell bodies located in the?

A

Posterior root ( dorsal root) spinal ganglion

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3
Q

The posterior root separates into rootlets that attach to the cord at the?

A

Posterior lateral sulcus

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4
Q

The spinal ganglia are located inside or medial to the?

A

Intervertebral foramen beyond the dura mater

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5
Q

C1 andC2 ganglia located on the vertebral arches

A

True

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6
Q

Sacral ganglia located within the?

A

Vertebral canal

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7
Q

The coccygeal located inside?

A

Dura mater

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8
Q

Mixed spinal nerve, meningeal branch is given off at all spinal levels

A

True

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9
Q

Renter the vertebral canal thru if and divide into what?

A

Ascending, descending, transverse branches

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10
Q

These branches provide what info?

A

Somatosensory and sympathetic supply to dura, blood vessels, periosteum, intervertebral disc in the ant and lateral portions of the canal.

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11
Q

The mixed spinal nerve divides into?

A

Posterior ( dorsal ) ramus and anterior( ventral) ramus

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12
Q

The posterior ramus spirits into what branches?

A

Lateral and medial except C1

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13
Q

Posterior ramus is smaller than the anterior ramus except C1 S4 S5

A

True

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14
Q

The posterior ramus has motor innervation to? And sensory to?

A

Deep back muscles, skin on either side of spine

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15
Q

The anterior ramus has motor innervation to?

A

Anterior and lateral trunk muscles, skeletal muscles

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16
Q

Anterior rami contribute to the great plexus

A

True

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17
Q

The anterior ramus provides sensory info to?

A

Skin of extremity as well as lateral and anterior trunk

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18
Q

Sympathetic chain communicans are located?

A

Medial to the bifurcation of the mixed spinal nerve

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19
Q

White ramus communicans carry unmyelinated axons

A

False myelinated

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20
Q

White ramus communicans contain cell bodies in the?

A

Lateral horn cells at cod levels T1-L2

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21
Q

White ramus communicans carry preganglonic sympathetic fibers enter sympathetic chain and do what?

A

Synapse or pass thru splanchnic nerves

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22
Q

Gray ramus communicans carry what axons?

A

Unmyelinated postganglionic sympathetic axons from cell bodies in the sympathetic chain to the spinal nerve

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23
Q

Gray ramus communicans associated with each spinal nerve

A

True

24
Q

C1 suboccipital nerve has motor supply to what muscles?

A

Rectus capitis posterior major and minor, obliquus capitis superior and inferior, semispinalis capitis

25
Q

The C2 has two branches what are they and what do they supply?

A

Medial branch greater occipital nerve sensory to post neck scalp
Lateral motor supply to semispinalis capitis, longissimus capitis, splenius capitis

26
Q

C3 has two branches which supply what?

A

Medial least occipital nerve sensory from skin of posterior neck
Lateral motor supply semispinalis capitis longissimus capitis, splenius capitis

27
Q

C4-C8 two branches supply what?

A

Medial sensory to skin over post neck

Lateral motor supply to iliocostalis cervicis, longissimus cervicis and capitis

28
Q

Cervical plexus is formed by what?

A

Anterior rami of C1- C4 spinal nerves

29
Q

Communications with cranial nerves fibers from what ganglion communicate with the loop formed by?

A

Inferior Vagal ganglion C1 and C2

30
Q

The spinal accessory nerve Carrywhat info?

A

Proprioceptive and communicate with loops of C2 C3 and C3 and C4

31
Q

Spinal accessory from scm to C2 and trap C3 C4

A

True

32
Q

The hypoglossal nerve communicates with C1 fibers and become what? And supply what?

A

Superior root ansa cervicalis, supply thyrohyoid and geniohyoid

33
Q

Superior cervical ganglion has three gray rami communicans and carry what?

A

Postganglionic sympathetic vasomotor, sudomotor, pilomotor to the loop btw C1 and C2 roots of C3 and C4

34
Q

Superficial branches, lesser occipital nerve carries fibers from? And supply?

A

C2 sometimes C3 supply skin over superior 1/3 of auricle and skin behind ear. Communicates with greater occipital nerve Nd great auric ulnar nerve- cervicogenic headache

35
Q

The great auricular nerve carries fibers from? And split into what branches?

A

C2 C3 and anterior and posterior branches

36
Q

The anterior branch of the great auricular combines with what nerve and supplies?

A

Facial nerve, skin over parotid gland

37
Q

The posterior branch of great auricular supplies what?

A

Skin over mastoid process

38
Q

The transverse cutaneous carries fibers? And divides into what supplying what?

A

C2C3 ascending and descending branches supply skin over platysma

39
Q

The trunks from C3 C4 form what nerves?

A

Medial lateral intermediate supraclavicular nerves

40
Q

The medial supraclavicular nerve supplies?

A

Skin over sternal end of clavicle as far as second rib

41
Q

The intermediate supraclavicular supplies what?

A

Skin over deltoid and pec major as far as second rib

42
Q

The lateral supraclavicular nerve supplies?

A

Skin over superior and lateral aspects of shoulder

43
Q

Deep branches are divides into series medial and lateral series

A

True

44
Q

Lateral series passes into post triangle consisting of what branches?

A

Communicating and muscular

45
Q

The spinal accessory nerve receives info from communicating branches carry fibers from?

A

C2-4

46
Q

The muscular branches are associated with what muscles?

A

Scm fibers C2 C3 C4, trap fibers C2 C3, levator scapula C3, C4 motor and sensory, middle scalene fibers C3 C4

47
Q

The medial series passes into anterior triangle

A

True

48
Q

The communicating branches of the medial series is btw what?

A

Vagus and loop C1 C2

49
Q

Communicating branch of medial series has 3 to 4 gray rami communicans from?

A

Cervical ganglion to upper four cervical nerves

50
Q

Communicating branch from medial series contain C1 communicating with what nerve and separated into what?

A

Hypoglossal nerve and superior root ansa cervicalis

51
Q

The muscular branches of the medial seriesare sent what muscles?

A

Rectus capitis lateralis C1, rectus capitis anterior C1 C2, longus capitis C1-C3, longus colli C2- C4

52
Q

Branches from C2 C3 form what?

A

Inferior root ansa cervicalis

53
Q

Ansa cervicalis supplies what?

A

Sternohyoid, sternothyroid, both bellies omohyoid

54
Q

The phrenic nerve is formed by what fibers?

A

C3- C5 most coming from C4

55
Q

Phrenic nerve defends through where?

A

Neck anterior to ant scalene

56
Q

Phrenic nerve recieves what fibers?

A

Postganglionic sympathetic fibers from cervical ganglia

57
Q

The phrenic nerve supplies what?

A

Diaphragm

Pns (3 decks)

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