Spaces, Fossa, Brachial Muscles And Brachial Vessels Flashcards
Borders of the quadrangular space
Teres minor
Teres major
Long head of triceps
Humerus
What goes through the quadrangular space
Axillary nerve
Posterior circumflex humeral vessels
Borders of the triangular space
Teres minor
Teres major
Long head of triceps
Contents of the triangular space
Circumflex scapular vessels
Borders of the triangular interval
Teres major
Long head of triceps
Lateral head of triceps
Contents of the triangular interval
Radial nerve
Deep brachial vessels (profound a brachii)
Anterior compartment of brachial muscles
Flexors of forearm:
Coracobrachialis
Biceps brachii (long and short head)
Brachialis
Innervation of the anterior brachial muscles
Musculocutaneous nerve
Median nerve and brachial artery run posterior and medial to the:
Coracobrachialis
_____ artery of humerus enters at distal end of the coracobrachialis
Nutrient
Coracobrachialis is pierced by:
Musculocutaneous nerve
OR, INS, NS, and AC of coracobrachialis m
OR: Coracoid process of scapula
INS: Medial surface of humerus
NS: Musculocutaneous
AC: Flexion and addiction of arm
OR, INS, NS, AC of Biceps brachii
OR: (2 heads) Short head: coracoid process of scapula. Long head: supraglenoid tubercle of scapula (passes through intertubercular sulcus under the transverse ligament)
INS: Radial tuberosity
Bicipital aponeurosis
NS: Musculocutaneous
AC: Flexes arm (weak) Flexes forearm (stronger flexor with forearm at 90 degrees and supinate) Supinates forearm (strongest forearm supinator with forearm at 90 degrees)
Workhorse of the anterior compartment- deep to biceps brachiii- pure flexor
Brachialis
OR, INS, NS, AC of Brachialis
OR: Anterior humerus
INS: Coranoid process of ulna (ulnar tuberosity)
NS: Musculocutaneous
AC: Flexes forearm
Posterior compartment of the brachial muscles (2)
Triceps (long head, lateral head, medial head)
Anconeus
Posterior compartment of the brachial muscles is innervated by the:
Radial nerve
OINA of Triceps brachii
OR: Long head- infraglenoid tubercle of scapula
Lateral head: posterior humerus, superior to the radial groove
Medial head: Posterior humerus, inferior to the radial groove
INS: Olecranon process of ulna
NS: Radial nerve
AC: Extends forearm
Extends and adducts arm (long head- weak)
OINA of Anconeus
OR: Lateral epicondyle of humerus
INS: Lateral olecranon of ulna
Posterior surface of the ulna
NS: Radial nerve
AC: Extends forearm
Tenses elbow joint capsule to prevent entrapment (keeps it from getting pinched)
Abducts the ulna during pronation
Triangular space of the elbow (anterior) with a roof and floor
Cubital fossa
Boundaries of the cubital fossa
Superior: line from medial to lateral epicondyle
medial: common flexor forearm tendon and lateral border of pronator teres
Lateral: medial border of extensor tendon from lateral epicondyle- Brachioradialis
Floor: Brachialis and supinator
Roof: skin, median cubital vein, fat, fascia, and bicepital aponeurosis
What runs through the cubital fossa
Medial to lateral:
Median nerve
Terminal brachial artery (radial and ulnar branches form at apex)
Biceps tendon
Deep radial nerve
Brachial artery is below the
Median nerve
Brachial artery and median nerve are located
Under bicipital aponeurosis
Over biceps brachii
Deep radial nerve enters:
Becomes
Enters supinator, goes through and exits as the posterior interosseous nerve
Brachial artery branches and becomes
Radial artery and ulnar artery opposite the neck of the radius
Brachial artery is a continuation of the:
Axillary artery
Brachial artery begins at the
Lower border of teres major
Brachial artery ends:
In the cubital fossa
Where does the brachial artery run
Bicipital groove, anterior to the triceps and brachialis, medial to the humerus
Brachial artery enters cubital fossa with the :
Where
With the median nerve
Anterior to the medial supercondylar ridge
Nutrient artery to humerus at the coracobrachialis
Brachial artery
Brachial artery comes out of the
Teres minor
Brachial artery becomes the
Deep brachial artery
Deep brachial artery spilts into:
Middle and lateral radial collateral branches
Radial collateral branch annastimose with the
Recurrent radial artery
Middle collateral branch runs from the
Back side of the arm and around
2 branches of the medial side of the brachial split and become
Superior ulnar collateral
Inferior ulnar collateral
Inferior ulnar collateral runs
In front of the medial epicondyle
Superior ulnar collateral runs
Behind the medial condyle
Profunda brachii, AKA:
Deep brachial artery
Brachial artery spilts into the
Radial and ulnar arteries
Middle collateral branch has recurrent branch coming off of:
post. Interosseous membrane
Blockage of brachial artery in the medial condyle means:
Cannot get blood down to the artery
The peri-elbow collateral circulation allows:
Flow to continue distally when the forearm is fully flexed with resulting near occlusion of the brachial artery.
It is acceptable to clip the brachial rather distal to the profundal branch bc of this collateral system
Superficial veins of the arm
Superficial: cephalic, basilic, medial cubital
Deep: Brachial (
Where does the brachial vein form
At the elbow by the confluence of the radial and ulnar veins
The brachial vein is joined by:
Basilic to form axillary vein