Quiz 11

The __ nerve serves the deltoid and teres minor muscles

Axillary

The posterior cord gives rise to the __ nerve and the __ nerve.

Axillary and radial

This artery begins at the end of the subclavian artery and ends at the beginning of the brachial artery. It has 3 branches that we will study in the cat: the ventral thoracic artery, lateral thoracic artery, and the sub scapular artery.

Axillary artery

This surface of the hand is served by the ulnar nerve, both anteriorly and posteriorly.

Medial cutaneous area of the hand.

The boundaries or the axilla are: Medial:, ___, Lateral:___, Anterior:___ and posterior:___

Medial: Ribs covered by serratus anterior Lateral: Biceps brachii, coracobrachialis, and humerus Anterior: Pectoral muscles Posterior: lattissimus dorsi

Palmaris longus is innervated by the __ nerve.

Median

Pronator teres and pronater quadrates are innervated by the __ nerve.

Median

The __ nerve serves the five muscles in the hand, most of which control the thumb

Median

The lateral half of the ring finger is innervated by the __ nerve.

Median

The __ nerve runs with the radial artery along the radius bone in the forearm

Median nerve

This nerve runs with the brachial artery in the arm. It passes through the supracondyloid foramen of the cat with the brachial artery, and then in the forearm it runs with the radial artery. It passes through the carpel tunnel into the hand. This nerve is formed from branches of the medial and lateral cords. It contains neurons from rami C6, C7, C8, and T1 that come directly from anterior divisions of the brachial plexus as well as the anterior rami of C5 from communication with the musculocutaneous nerve.

Median nerve

This is the area that the cranial humeral circumflex artery normally connects to. It is also the area we find the musculocutaneous nerve running along.

Belly of the biceps brachii

This muscles originates on the supraglenoid tubercle and the corocoid process of the scapula and inserts on the radial tuberosity.and bicipital aponeurosis of forearm.

Biceps brachii

This vein is observed on the superficial, lateral side of the forearm and arm. Inferior to the clavicle, it passes into the axilla where it joins the axillary vein. The axillary vein passes through the thoracic wall to become the subclavian vein.

Cephalic vein

This is the most superior ramus that forms the brachial plexus. There is one on each side of the body.

Cervical ramus 5

second most superior ramus

Cervical ramus 6

This is the third from the most superior ramus that forms the brachial plexus.

Cervical ramus 7

Fourth from the most superior ramus.

Cervical ramus 8

Name of the syndrome that is brought about by damage to the ulnar nerve.

Claw hand

__ syndrome is associated with damage to the __ ulnar nerve.

Claw hand

The caudal humeral circumflex and cranial circumflex arteries provide for the __ circulation

Collateral

The __ forms the apex of the axilla

Glenohumeral joint

In the cat, the median nerve runs with the brachial artery in the arm and both pass through the __.

Supracondyloid foramen

The __ nerve innervates the infraspinatus and supraspinatus muscle

Suprascapular nerve

This nerve serve the supraspinatus and infrapsinatus muscles and the shoulder joint. These are both rotator cuff muscles. The origin of this nerve is the upper trunk of the brachial plexus. It runs through the supra scapular notch with the supra scapular artery.

Suprascapular nerve

The __ nerve and the __ artery pass through the supra scapular notch

Suprascapular x 2

The medial cord gives rise to the __ nerve and half the __ nerve.

ulnar, median

Inflammation in the carpel tunnel causes dysfunction of the __ nerve, resulting in carpal tunnel syndrome

Median

The __ nerve runs along the belly of the biceps brachii

musculocutaneous

This small muscle in the posterior compartment of the arm is a syrnegist to the triceps brachii. It is served by the radial nerve.

Anconeus

Each trunk of the brachial plexus has two divisions, they are the __ and the __ division

Anterior and posterior

The trunks of the brachial plexus give rise to these as well as a similar set of structures that pass posteriorly.

Anterior divisions

Name of the syndrome that is brought about by damage to the median nerve. This results in the loss of ability to oppose the thumb.

Ape hand

__ syndrome is associated with damage to the median nerve.

Ape hand

This muscle originates on the humerus and inserts on the ulna. It is located in the anterior compartment of the arm and is served by the musculocutaneous nerve. Its only action is flexion in the forearm.

Brachialis

The __ muscle is the only flexor served by the radial nerve.

Brachioradialis

The cephalic vein and the radial nerve run together along the __ in the forearm.

Brachioradialis

The cords of the brachial plexus give rise to five of these. Four of them go into the arm and one goes out into the shoulder.

Branches

The rami that form the brachial plexus are the __, __, __, __ and __.

C5, C6, C7, C8 and T1

This muscle originates from the coracoid process of the scapula and inserts on the middle third of the humerus her the deltoid tuberosity. It is served by the musculocutaneous nerve and is responsible for flexion and adduction of the arm, It also helps stabilize the shouder joint.

Corachobrachialism

There are three of these structures, and they are formed by the merging of the anterior and posterior divisions. They are named for their positions relative to the middle third of the axillary artery.

Cords

The __ of the brachial plexus are named for their position relative to the middle third of the axillary artery. Their names are __, __ and __.

Cords, lateral, posterior and medial

This artery is a branch of the brachial artery. It gets its name from the fact that is passes around the cranial side of the humerus. It forms collateral circulation with the caudal humeral circumflex artery in the lateral region of the arm. In the cat it serves the biceps brachii as well as the head of the humerus. In the human it branches from the lateral side of the distal third of the axillary artery and it serves the head of the humorous and the glenohumeral joint.

Cranial humeral circumflex artery

On the medial side of the arm, the radial nerve goes deep into the arm with the __.

Deep brachial artery

This artery is a small branch for more often two or three small branches of the brachial artery. It runs deep into the arm with the radial nerve.

Deep brachial artery

This muscle moves the arm. It is the prime flexor, abductor, extensor and lateral and medial rotator of the arm. It is served by the axillary nerve.

Deltoid muscle

The three trunks of the brachial plexus give rise to these. There is an anterior and posterior structure from each trunk that are collectively called this.

Divisons

The __ nerve innervates the rhomboid muscles and the levator scapulae ventralis

Dorsal scapular nerve

Syndrome brought about by damage to the radial nerve. This results in the loss of ability to extend the hand and fingers.

Drop wrist syndrome

__ syndrome is associated with damage to the radial nerve

Drop wrist syndrome

This muscle is in the posterior compartment of the forearm. It is served by the radial nerve and is an extensor and abductor of the wrist. It is found on the lateral side of the forearm, and its origin can be found on the lateral epicondyle of the humerus.

Extensor carpi radialis brevis

This muscle is found in the posterior compartment of the forearm. It is one of the two muscles that we studied that extends and abducts the hand or wrist. It is served by the radial nerve and originates from the lateral epicondyle of the humerus.

Extensor carpi radialis longus

This muscle of the posterior compartment of the forearm extends and adducts the wrist. It is served by the radial nerve. It has its origin on the lateral epicondyle of the humerus.

Extensor carpi ulnaris

This muscle is in the posterior compartment of the forearm. It is served by the radial nerve and is an extensor of the digits and the wrist. It originates on the lateral epicondyle of the humerus.

Extensor digitorum communis

This muscle is in the anterior compartment of the forearm. It is unusual in that it is served by the ulnar nerve, It is a flexor and adductor of the wrist.

Flexor carpi ulnaris

What muscles/muscle are not fully controlled by the median nerve in the anterior compartment of the forearm?

Flexor carpi ulnaris and flexor digitorum profundus

This muscle is served by the median nerve. It flexes the hand and digits two through 5. It is deep to the palmaris longus in humans. In the cat it is superficial to the other flexor of the digits.

Flexor digitorum superficialis

__ syndrome is associated with damage to the axillary nerve.

Head waiters

This syndrome is brought about by damage to the axillary nerve. If the damage results in loss of use of the teres minor. It also has cutaneous branches to the shoulder joint and the skin that covers the distal half of the deltoid muscle in humans.

Head waiters syndrome

A transverse cut through the arm midway between the shoulder and elbow would involve cutting through the __ bone.

Humerus

The corachobrachialis muscle, the __ muscle and the __ bone form the lateral boundary of the axilla.

Humerus and biceps brachii

The __ gives rise to the musculocutaneous nerve and half the median nerve.

Lateral cord

This structure is formed from the anterior division of the upper and middle trunks of the brachial plexus. It contains neurons from the anterior rami of c5, c6, and c7. It gives rise to the musculocutaneous nerve as well as past of the median nerve.

Lateral cord

The __ nerve is a branch of the musculocutaneous nerve. It serves the skin of the lateral area of the forearm.

Lateral cutaneous

This is the name of the branch of the musculocutaneous nerve that serves the skin in the forearm. It is the only nerve derived from the musculocutaneous nerve that goes into the forearm.

Lateral cutaneous nerve of forearm

This artery is a branch of the middle third of the axillary artery. In humans, it serves the anterior and medial walls of the axilla. In women, it also has branches that serve the mammary gland.

Lateral thoracic artery

This muscle originates from the lumbar fascia, portions of the sacrum, iliac crest, ribs, and inferior angle of the scapula. It extends, hyperextends, medially rotates and adducts the arm. It is served by the thoracodorsal nerve.

Latissimus dorsi

The posterior boundary of the axilla is the __ and it is innervated by the __ nerve.

Latissimus dorsi, Thoracodorsal

This muscle originates from the transverse processes of cervical vertebra 1 to cervical vertebra 4. It inserts on the vertebral border of the scapula between the superior angle and the spine of the scapula. It is served by a branch of the dorsal scapular nerve as well as lateral branches of cervial spinal nerves 3 and 4. It elevates, rotates and flexes neck laterally.

Levator scapulae ventralis

The __ trunk is the only one derived from only one ramus

Middle

This structure is formed from the anterior ramus of cervical spinal nerve 7. it has an anterior and posterior division.

Middle trunk

The __ nerve innervates the corachobrachialis and the brachialis muscle

Musculocutaneous

The __ nerve is derived exclusively from the anterior rami of C5, C6 and C7

Musculocutaneous

Ape hand syndrome involves an inability to __

Oppose the thumb

This is the distal extensor compartment of the pectoral appendage. It is served by the radial nerve.

Posterior compartment of arm

This structure is formed from the posterior divisions of the upper, middle and lower trunks of the brachial plexus. It contains neurons from the anterior rami of C5, C6, C7 C8 and T1. It gives rise to the radial and axillary nerves. It gets it name from the position relative to the middle third of the axillary artery. It is deep in the axillary sheath.

Posterior cord

The axillary nerve arises from the __ and damage to it results in __

Posterior cord, head waiters syndrome

The trunks of the brachial plexus give rise to these as well as a similar set of structures that pass anteriorly.

Posterior divison

The brachioradialis muscle is not physically part of any compartment, but it is usually grouped with muscles of the __ compartment of the forearm.

Posterior or extensor compartment

This muscles pronates the forearm and hand and is found at the distal end of the forearm. It is served by the median nerve.

Pronator quadratus

This muscle pronates the hand. It is served by the median nerve. It originates from the medial epicondyle of the humerus and from the medial surface of the coronoid process of the ulna. It inserts on the lateral surface of the middle third of the radius.

Pronator teres

A deep branch of the __ nerve serves the extensor muscles in the forearm and the supinator muscle

Radial

The __ nerve is the only nerve derived from all five anterior rami (C5, C6, C7, C8 and T1)

Radial

The __ nerve serves the supinator muscle

Radial

The posterior compartment of the arm is innervated by the __ nerve.

Radial

The posterior compartment of the forearm is innervated by the __ nerve

Radial

This nerve is a branch of the posterior cord containing neurons from the anterior rami of C5, C6, C7. C8 and T1. It serves the posterior compartment of the arm and forearm as well as the brachioradialis muscle. It serves all the extensor muscles in the arm.

Radial nerve

This is a group of two muscles, both which are served by the dorsal scapular nerve. They both retract, elevate and rotate the scapula. They both insert on the medial border of the scapula and collectively originate from the spinous process of C7, T1, T2, T3, T4 and T5.

Rhomboids muscle

The __ in humans covers the rib and is the medial boundary for the axilla.

Serratus anterior

This muscle is one of the rotator cuff muscles. It is the only rotator cuff muscle that is a medial rotator of the arm. It has an origin on the sub scapular fossa and inserts on the lesser tubercle of the humerus. It is served by the sub scapular nerve.

Subscapularis

This muscle supinates the forearm and hand but does not flex the forearm. It is served by the radial nerve.

Supinator

The __ nerve passes posteriorly to the medial epicondyle of the humerus

Ulnar

The surface of the little finger and half the ring finger is innervated by the __ nerve.

Ulnar

The __ nerve controls fifteen muscles in the hand. The __ muscle controls five muscles in the hand.

Ulnar, median

The __ nerve runs with the __ artery and the ulna bone in the forearm

Ulnar, ulnar

The three trunks of the brachial plexus are the __, __ and __.

Upper, middle lower.

This artery is a branch of the brachial artery. Its origin is in the forearm and it runs with the median nerve on the lateral side of the forearm. It is usually found deep and medial to the flexor carpi ulnaris muscle.

radial artery

The median nerve is comprised of which cord?

1/2 medial, 1/2 of the lateral

This nerve is a branch of the posterior cord of the brachial plexus, containing neurons from the anterior rami of C5 and C6. It can be seen in the axilla adjacent to the caudal humeral circumflex artery. It runs between the subscapularis and teres major muscle.

Axillary nerve

The major vessels of the upper limb that are associated with the brachial plexus are the __, __ and __ arteries.

Axillary, brachial, radial and ulnar

The axillary nerve and the __ pass between the teres major and subscapularis muscles together.

Caudal humeral circumflex artery

This structure is formed from the union of anterior rami of cervical spinal nerve 8 and thoracic spinal nerve 1. It has an anterior and posterior division.

Lower trunk

This structure is formed from the anterior division of the lower trunk of the brachial plexus. It contains neurons from the anterior rami of C8, and T1. It gives rise to the ulnar nerve as well as part of the median nerve.

Medial cord

When the spinal nerves leave the intervertebral foramina they divide into anterior and posterior structure. This is the name of the structures. The anterior structures of C5 to T1 form the beginning of the brachial plexus. They combine in predictable patterns to form the trunks.

Rami

In order, starting at the spinal cord, the five sections of the brachial plexus are the __, __, __, ___ and __.

Rami, trunks, Divisions, Cords, Branches

This landmark is found on the humerus of the cat but only occasionally on the humerus of a human. The brachial artery and median nerve of the cat pass through this structure and are therefore, somewhat protected by this arch of bone.

Supracondyloid foramen

The __ is dominated by the musculocutaneous nerve

anterior compartment of arm

The __ is dominated by the median nerve

anterior compartment of forearm

The __ is innervated by 1/2 the ulnar nerve and the 1/2 median nerve

flexor digitorum profundus muscle