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Anatomy Arm and Cubital Fossa
KYCOM Block 4
87
Anatomy
Graduate
11/16/2012

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Term
what innervates the skin over point of shoulder and half way down deltoid muscle, what does this nerve branch off of
Definition
suprascapular nerves from the cervical plexus
Term
what innervates the skin over the lower half of the deltoid, what does this nerve branch off of
Definition
upper lateral cutaneous nerve of the arm from the axillary nerve
Term
what innervates the skin over the lateral arm below the deltoid, what does this nerve branch off of
Definition
lower lateral cutanrous nerve of the arm from the radial nerve
Term
what innervaes the skin of the base of the axilla and medial arm, what does this nerve branch off of
Definition
medial curanrous nerve of the arm from the medial cord, intercostobrachial nerve from the lateral cutaneous branch of the 2nd intercostal nerve
Term
what innervates the skin of the back of the arm, what does this nerve branch off of
Definition
posterior cutanrous nerve of the arm from the radial nerve
Term
what are the superificial veins of the arm
Definition
cephalic and basilic
Term
where does the cephalic vein oroginate
Definition
from lateral side of dorsal venous arch of hand
Term
what is the cephalic vein within
Definition
superificial fascia on lateral aspect of the arm
Term
where does the cephalic vein leave the superificial fascia, what does it then run by
Definition
it runs superior and medial between pectoralis major and deltoid
Term
where does the cephalic vein go after it runs through the pectoralis major and deltoid
Definition
passes deep to the clavicular head of the pectoralis major and pierces the clavipectoral fascia draining into the axillary vein
Term
where does the basilic vein originate
Definition
medial side of dorsal venous arch of hard
Term
describe the path of the basalic vein
Definition
ascends in superificial fascia on medial side of arm half way up the arm it pierces deep fascia at lower border of teres major and joins beachial veins to form axillary vein
Term
what encloses the components of the arm
Definition
sheath of deep fascia
Term
how is the arm divided into anterior and posterior
Definition
medial and lateral intermuscular septa extend from deep fascia to humerus
Term
what are the muscles of the anterior compartment of the arm
Definition
biceps brachii, coracobrachialis, brachialis
Term
what are the muscles of the anterior compartment of the arm innervated by
Definition
musculocutanrous nerve
Term
what is the origin of the short head of the biceps brachii
Definition
coracoid process
Term
what is the origin of the long head of the biceps brachii
Definition
supraglenoid tubercle
Term
which head of the biceps brachii has a tendon
Definition
long head
Term
describe the path of the tendon of the biceps brachii
Definition
passes above humeral head within the shoulder joint and emerges from joint and lies in the bicipital groove
Term
what is the insertion of the biceps brachii
Definition
radial tuberosity and deep fascia of medial aspect of forearm via fibrous band, bicipital aponeurosis
Term
what innervates the biceps brachii
Definition
musculocutaneous nerve
Term
what is the action of the biceps brachii
Definition
flexion and supination of the forearm, assists in flexion of the arm at the shoulder joint
Term
what is the origin of the coracobrachialis
Definition
coracoid process
Term
what is the insertion of the coracobrachialis
Definition
middle part of medial surface of the humeral shaft
Term
what is the innervation of the coracobrachialis
Definition
musculocutaneous nerve
Term
what is the action of the coracobrachialis
Definition
flexion and adduction of the arm and shoulder joint
Term
what pierces the coracobrachialis
Definition
musculocutraneous nerve
Term
what is the origin of the brachialis
Definition
anterior aspect of lower half of humeral shaft
Term
what is the insertion of the brachialis
Definition
coronoid process and tuberosity of ulna
Term
what is the innervation of the brachialis
Definition
musculocutanrous nerve, small lateral part of the muscle is supplied by radial nerve
Term
what is the action of the brachialis
Definition
flexion of the forearm at the elbow
Term
where does the brachial artery begin
Definition
at lower border of teres major muscle as a continuation of the axillary artery
Term
what does the brachial artery run along
Definition
medial aspect of the arm
Term
what runs with the brachial artery
Definition
median nerve
Term
how does the brachial artery get to the cubital fossa
Definition
passes deep to the bicipital aponeurosis
Term
where does the brachial artery end, how
Definition
in cubital fossa, opposite the neck of the radius divides into radial and ulnar arteries
Term
what are the branches of the brachial artery
Definition
muscular, nutrient artery of the humerus, profunda brachii artery, superior ulnar colateral artery, inferior ulnar collateral artery, radial artery, ulnar artery
Term
what muscles does the muscular branches of the brachial artery supply
Definition
anterior compartment of the arm
Term
where does the profunda brachii artery begin
Definition
near the begining of the brachial artery
Term
what does the profunda brachii artery follow
Definition
radial nerve
Term
what does the profunda brachii artery supply
Definition
posterior compartment of the arm
Term
where and how does the progunda brachii artery terminate
Definition
radial collateral and middle collateral branches. anastomosis around elbow joint
Term
what does the superior ulnar collateral artery run along, how does it end
Definition
ulnar nerve, anastomosis around elbow joint
Term
where does the inferior ulnar collateral artery end
Definition
anastomosis around elbow joint
Term
what is the terminal branch of the lateral cord of the brachial plexus
Definition
musculocutaneous nerve
Term
what does the musculocutaneous nerve pierce
Definition
coracobrachialis
Term
describe the path of the musculocutaneous nerve
Definition
runs inferior and lateral between biceps brachii and brachialis, just lateral to biceps brachii tendon, it pierces deep fascia and becomes superificial, runs down lateral part of forearm as lateral cutaneous nerve of forearm
Term
what are the branches of the musculocutaneous nerve
Definition
musular, lateral cutaneous nerve of the forearm, articular branch ot elbow joint
Term
what are the muscular branche sof the musculocutaneous nerve
Definition
coracobrachialis, biceps brachii, brachialis
Term
what does the lateral cutaneous nerve of the forearm supply
Definition
skin along lateral forearm as far as root of thumb
Term
how does the median nerve originate
Definition
by two roots from the medial and lateral cords of brachial plexus
Term
what does the median nerve run with
Definition
brachial artery
Term
at first, what is the relation of the median nerve to the middle artery
Definition
lateral to brachial artery
Term
what happens to the location of the median nerve int he middle arm
Definition
crosses anterior from lateral to medial
Term
after the middle arm, what does the medial nerve run under where does it end then
Definition
bicipital aponeurosis, cubital fossa
Term
what is the terminal branch of the medial cord of the brachial plexus
Definition
ulnar nerve
Term
in the anterior compartment of the arm, what does the ulnar nerve run along, one what side, where does this relationship end
Definition
medial to brachial artery up to the insertion of the coracobrachialis
Term
lat
Definition
Term
after the insertion of the coracobrachialis, what does the ulnar nerve do
Definition
pierces intermuscular septum and descends in posterior compartment of the arm, passes posterior to medial epicontyle of humerus
Term
where is the ulnar nerve suspectible to injury, why
Definition
when it passes posterior to the medial epicondyle of the humerus, it is superificial
Term
in what compartment is the triceps bracii
Definition
posterior compartment of the arm
Term
what is the origin of the long head of the triceps brachii
Definition
infraglenoid tubercle of the scapula
Term
what is the origin of the lateral head of the triceps brachii
Definition
posterior aspect of the humeral shaft above the radial (spiral) groove
Term
what is the origin of the medial head of the triceps brachii
Definition
posterior aspect of the humeral shaft, below radial (spiral) groove
Term
what is the insertion of the triceps brachii
Definition
upper surface of olecranon of ulna
Term
what is the innervation of the triceps brachii
Definition
radial nerve
Term
what is the action of the triceps brachii
Definition
long head assists in extension and adduction of the arm and shoulder, extension of the forearm at elbow joint
Term
what is the terminal branch of the posterior cord of the brachial plexus
Definition
radial nerve
Term
what compartment of the arm does the radial nerve enter
Definition
posterior
Term
describe the path of the radial nerve. this is long.
Definition
passes inferior and lateral in radial groove on posterior aspect of the humeral shafe, in low arm it pierces lateral intermuscular septum and enters anterior compartment, runs inferior between brachialis and brachioradialis, in front of lateral epicondyle of the humerus it divides into superificial and deep branches
Term
in the posterior compartment of the arm what is the radial nerve accompanied by
Definition
profunda brachii vessels
Term
what are the branches of the radial nerve in the axilla and posterior compartment of the arm
Definition
muscular branches for 3 heads of triceps and anconeus, lower lateral cutaneous nerve of the arm, posterior cutaneous nerve of the arm, posterior cutaneous nerve of the forearm
Term
what are the branches of the radial nerve in the anterior compartment of the arm
Definition
muscular branches of the brachialis, brachioradialis, extensorcapri radialis longus, articular branch to the elbow joint, deep and superificial branches
Term
what are the terminal branches of the radial nerve
Definition
deep and superificial branches
Term
where is the cubital fossa located
Definition
anterior to elbow joint
Term
what is the medial boundry of the cubital fossa
Definition
pronator teres
Term
what is the lateral boundry of the cubital fossa
Definition
brachioradialis
Term
what is the superior boundry of the cubital fossa
Definition
line connecting medial and lateral epicondyles of humeris
Term
what forms the floor of the cubital fossa
Definition
brachialis medially and supinator laterally
Term
what forms the roof of the cubital fossa
Definition
skin, superificial fascia, and deep fascia
Term
what is the roof of the cubital fossa reinforced by
Definition
bicipital aponeurosis
Term
what runs in the roof of the cubital fossa
Definition
median cubitial vein, branches of the medial and lateral cutaneous nerves of the forearm
Term
where is the median cubital vein located
Definition
superificial fascia overlying cubital fossa
Term
what does the median cubital vein connect
Definition
cephalic and basalic veins
Term
where are the branches of the medial and lateral cutaneous nerves of the forearm located
Definition
in superificial fascia overlying cubital fossa
Term
what are the contents of the cubital fossa
Definition
median nerve, brachial artery and its two terminal branches and accompanying veins, tendon of the biceps brachii, radial nerve and its two terminal branches
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