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29 Cards in this Set

  • Front
  • Back

The dorsal root is comprised of....



a) afferent fibers (sensory & proprioceptive fibers)



b) efferent fibers (motor neurons to muscles & glands)

a) afferent fibers (sensory & proprioceptive fibers)

Ventral root is composed of.....

efferent fibers (motor neurons to muscles & glands)

What is the difference between a dermatome & cutaneous area??

Dermatome: area of skin innervated by nerves of an individual dorsal root



CA: """" one specific peripheral nerve

Thoracic limb muscles innervated by one or more of the following

Cranial Nerve XI (Accessory nerve)


Cervical spinal nerves


Thoracic spinal nerves


Nerves of the brachial plexus

The brachial plexus is formed by the ___________ of ______ -______.

a) ventral branches


b) C6-T2

Cranial Nerve XI (Accessory Nerve)

"ACCESSORIES COST MONEY"



Cleidocephalicus m. (Cleidocervicalis & cleidomastoidus mm.)



Omotransversarius m.


Sternocephalicus m.


Trapezius m.

Cleidocephalicus m. is innervated by...

1. Cranial nerve XI (Accessory n.)



2. ventral branches of cervical spinal nn.

Rhomboideus m. is innervated by

ventral branches of cervical & thoracic spinal nerves

Sternocephalicus m, sternohyoidues m. and sternothyroideus m. are all innervated by

cervical spinal nerves

Which thoracic limb muscles are innervated by the brachial plexus?

-Cutaneous trunci m.


-Extrinsic muscles:


-superficial pectoral m.


-deep pectoral m.


-latissimus dorsi m.


-serratus ventralis thoracis m.


-ALL intrinsic muscles of the thoracic limb



Cranial pectoral nn. inervates...

superficial pectoral m.

Suprascapular n. innervates ... (and what path does it take?)


-motor to supraspinatus & infraspinatus mm.



-courses btwn supraspinatus & subscapularis mm., then across scapular notch

Subscapular n. provides...

motor to majority of subscapularis m.

Musculocutaneous n.; 2 branches

- muscular br.: motor to BBC



-communicating br. musculocutaneous fibers course to median n.

Axillary n. provides motor to....

-deltoideus


-teres major


-teres minor


-caudal part of subscapularis

Thoracodorsal n. provides motor to...

latissimus dorsi m.

Radial n. muscular brs....



-found in ____________ region


-motor innervation to.....

-brachial region



-extensors of the elbow

Deep br. of the radial n. provides.....

motor innervation to extensors & supinators of antebrachium & manus

Superficial br. of the radial n. provides....

sensory...



Lateral br.: sensory to craniolateral aspect of


antebrachium & dorsum of


manus



Medial br.: sensory to craniomedial aspect of


antebrachium & medial aspect of


manus

Muscular br. of the median n. provides...

motor to pronators & some flexors of antebrachium & manus

Caudal cutaneous antebrachial n. (part of which nerve? provides....)

-part of ulnar n.



-provides sensory to caudal aspect of antebrachium

Muscular brs. of the ulnar n. provide...

motor to some flexors of antebrachium & manus

Dorsal br. of the ulnar n. provides...

sensory to abaxial aspect of digit 5 (lateral aspect of the manus)

Palmar br. of the ulnar n. provides...

-motor to interossei mm.



-sensory to palmar aspect of manus

Caudal pectoral nn. provide...

motor to deep pectoral m.

Lateral thoracic n. provides

motor to deep pectoral and cutaneous trunci mm.

Long thoracic n. provides

motor to serratus ventralis thoracis m.

where can the accessory n. be found?

courses along dorsal border of omotransversarius m.

Brachiocephalic n. provides...

motor to cleidobrachialis m.