Unit One Brachial Muscles Flashcards
Borders of quadrangular space
Teres minor, teres major, long head of triceps and humerus
Contents in quadrangular space
Axillary nerve and posterior circumflex humeral vessels
Borders of triangular space
Teres minor, teres major, long head of triceps
Contents in triangular space
Circumflex scapular vessels
Borders of triangular interval
Teres major, long head of triceps and lateral head of triceps
Contents in triangular interval
Radial nerve and deep brachial vessels (profunda brachii)
What are the three anterior compartment muscles of brachii
Coracobrachialis, biceps brachii and brachialis
Brachial muscles anterior portion are innervated by
Musculocutaneous nerve
What runs posterior medial to coracobrachialis
Median nerve and brachial artery
What enters at distal end of coracobrachialis
Nutrient artery of humerus
What pierces the coracobrachialis
Musculocutaneous nerve
Do the biceps brachii have a direct attachment to the humerus
No
The long head of biceps brachii passes through what and under what
Intertubercular sulcus and under the transverse humeral ligament
What action is weak of biceps brachii
Flexes arm
What is the strongest forearm flexor with forearm at 90 degrees and supinated
Biceps brachii
What is the strongest supination with forearm at 90 degrees
Biceps brachii
What is the workhouse of the anterior compartment
Brachialis
What muscle is located deep to biceps brachii
Brachialis
What are the two posterior brachial compartment muscles
Triceps and anconeus
Posterior brachial compartment muscles are innervated by
Radial nerve
What part of triceps brachii is weak when extending and adducting arm
Long head
What are the boundaries of the cubital fossa
Superior is a line from the medial to the lateral epicondyles, medial is common flexor forearm tendon and pronator teres, lateral is extensor tendons from the lateral epicondyle and brachioradialis, floor is brachialis and supinator, and roof is skin, median cubital vein, fat, fascia and bicipital aponeurosis
What are the contents in the cubital fossa from medial to lateral
Median nerve, terminal brachial artery (radial and ulnar branches form at apex), biceps tendon and deep radial nerve
What is a continuation of the axillary artery
Brachial artery
Where does the brachial artery begin
Lower border of teres major
Where does the brachial artery end
Cubital fossa
What does the brachial artery split into and where
Radial and ulnar arteries opposite the neck of the radius
Where does the brachial artery run
Bicipital groove, anterior to the triceps and brachialis, medial to humerus
Where does the brachial artery enter into the cubital fossa
Anterior to the medial supracondylar ridge
Brachial artery enters into cubital fossa with what nerve
Median nerve
What are the branches of the brachial artery
Nutrient artery, profunda brachii, superior ulnar collateral and inferior ulnar collateral
Nutrient artery goes where
To humerus at coracobrachialis
Profunda brachii runs with what and where
Radial nerve in the radial groove
Profunda brachii artery branches into
Middle and radial collateral branch at lateral epicondyle
The middle and radial collateral branches fuse into what other artery
Recurrent radial artery
Superior ulnar artery branches off brachial artery on what side
Medial side and posterior
Superior ulnar artery fuses with what artery
Posterior ulnar recurrent artery
Inferior ulnar collateral artery is going to run on what side after branching from brachial artery
Medial side and anterior to medial epicondyle
Inferior ulnar collateral artery fuses with what artery
Anterior ulnar recurrent artery
The peri elbow collateral circulation allows for
Flow to continue dismally when the forearm is fully flexed causing occlusion of the brachial artery
What are the superficial veins of the upper extremity
Cephalic, basilic and median cubital vein
What is the deep vein of the upper extremity
Brachial vein
Where does the brachial vein form
Elbow by the joining of the radial and ulnar veins
Brachial joins what vein to become the axillary vein
Basilic vein
What is the most common complication of humeral fractures
Radial nerve entrapment
Mid shaft or distal fractures of the humerus can entrap what nerve in the fracture fragments
Radial nerve
What is radial nerve palsy
Inability to extend the wrist and fingers
Recovery rates of radial nerve entrapment are relative to
Type of fracture and amount of nerve impingement
