Innervation of the Thoraco-abdominal Wall and Upper Limb

Order of nerve, artery, and vein inferior to the rib

Vein, Artery, Nerve (VAN)

The intercostal nerves of ____ - _____ leave their intercostal spaces and continue onto the anterolateral abdominal wall, changing their name to ___-____ ____

T7-T11; thoraco-abdominal nerves

Brachial plexus contains ventral rami from ____ to ____

C5-T1

_______ are comprised of ventral rami of C5-T1 when they emerge from the neck

Roots

The superior trunk forms from the union of ___ and ___-

C5 and C6

The middle trunk is comprised of ____

C7

The inferior trunk forms from the union of ___ and ____

C8; T1

Divisions are named as either ______ or ______ from the trunks

anterior or posterior

____ are the union of divisions in a specific pattern

cords

spinal nerves in lateral cord

C5, C6, C7

spinal nerves in medial cord

C8 and T1

spinal nerves in posterior cord

C5, C6, C7, C8, T1

cords are named by their relationship to the _____ ____

axillary artery

Each cord of the brachial plexus has several ___ ____

terminal branches

A few other, non-terminal branches arise from the roots or trunks such as ___ ___ __

long thoracic nerve

parts of the brachial plexus proximal to distal

roots, trunks, divisions, cords, branches

The long thoracic nerve innervates the _____ ______, and arises directly from the ventral rami of _____, ____, _____

serratus anterior; C5, C6, C7

Injury to the long thoracic nerve injury results in _____

paralysis or weakness of the serratus anterior

The musculocutaneous nerve innervates _____ compartment of the arm

anterior

the musculocutaneous nerve changes name to _________ to supply skin of lateral forearm as it emerges from the lateral aspect of the biceps brachii muscle

lateral cutaneous nerve of forearm

The lateral pectoral nerve innervates the _____ _____

pectoralis major

The lateral root of the median nerve has no contribution from _______ and the median nerve supplies most of the ______ compartment of the forearm and _____ compartment of the hand

C5; anterior; thenar

Medial pectoral nerve (C__ and T___) innervates the ___ ___ and ____

8;1; pectoralis major; minor

The medial cutaneous nerve of the forearm is supplied by what spinal nerves? what does it convey?

C8 and T1; sensory to medial forearm

Ulnar nerve contains fibers from what spinal nerves and innervates what?

C8 and T1; intrinsic muscles of the hand

The medial root of the median nerve contains fibers form what spinal nerves and what does it supply?

C8 and T1, anterior compartment of the forearm and thenar compartment of the hand

The radial nerve contains input from what spinal nerves?

C5, C6, C7, C8, T1

What does radial nerve innervate?

posterior compartments of the arm and forearm, sensory innervation from the posterior arm, forearm, and lateral dorsum of the hand

The axillary nerve contains input from what spinal nerves?

C5, C6

The axillary nerve carries what information?

innervates deltoid muscle, sensory from lateral shoulder/ upper arm

Musculocutaneous nerve emerges lateral to the biceps brachii as _____ _____ ____ of the forearm

lateral cutaneous nerve

The median nerve contains fibers from ___ - ____, and has ____ branches in the arm

C6-T1; no

The median nerve pierces ____ _____ _____ near the medial epicondyle of the humerus to travel through middle of ______ compartment of the forearm

flexor muscle mass; anterior

The _____ ____ ____ supplies skin of the central palm

palmar cutaneous branch

The median nerve enters the palm through the ____ ____

carpal tunnel

The Ulnar nerve contains fibers from what spinal nerves

C8 and T1

The ______ nerve travels along the ______ aspect of the brachial artery

ulnar; medial

at the elbow, the ______ nerve passes along posterior aspect between medial epicondyle and olecranon

ulnar

HOw many branches does the ulnar nerve have in the arm?

none

The ulnar nerve exits the forearm by passing superficial to flexor retinaculum through the _____ ____ to the ____ aspect of the hand

ulnar canal; palmar

The superficial branch of the ulnar nerve supplies the skin of the _____ _____ and palmar aspect of medial 1.5 digits via ____ ____ nerves

medial palm; palmar digital

The deep branch of the ulnar nerve supplies intrinsic muscles of the _____, ______, _______, and _____ compartments

hypothenar; central; adductor; interosseous

The radial nerve contains fibers from what spinal nervse

C5-T1

The Radial nerve supplies _______ compartment of the arm muscles and sensory from the posterolateral arm and posterior forarm

posterior

Radial nerve travels along the shaft of the ____ in the ____ compartment of the arm

humerus; posterior

The radial nerve divides into the superficial and deep radial nerves where?

anterior to the lateral epicondyle

The superficial radial nerve courses along the ____ compartment of the flexor compartment with the ____ artery and passes through the _____ _____

lateral; radial; anatomical snuffbox

The deep radial nerve pierces ______ muscle mass near the ____ epicondyle of the humerus to travel through the ______ compartment of the forearm

extensor; medial; posterior

The superficial radial nerve supplies ______ information from the lateral dorsum of the hand

sensory

The deep radial nerve supplies ______ innervation to the ______ compartment of the forearm

motor; posterior

Guyon canal

ulnar canal, where ulnar nerve exits through to the palm