Arm Compartment Flashcards
What muscle has no attatchment to the humerus bone?
Biceps brachiii
As the tendon of the biceps brachial enters the forearm a CT sheet is given off called?
Bicipital aponeurosis
Bicipital aponeurosis forms what aspect of the cubital fossa
The roof
Origin, Innervation, action, nerve supply of Biceps brachii
Long head:Supraglenoid tubercle of scapular, shorthead:Coracoid process of scapular
Insertion:radial tuberosity and deep fascia of forearm via bicipital aponeurosis
Innervation:musculocutaneous nerve
Action:Suppination of arm
Flexes the arm at the elbow and shoulder
Biceps tendon reflex tests spinal cord at what segement?
C6
Brachialis forms what aspect of the cubital fossa
Floor
What muscle is found more distally than other muscles of the arm?
Brachialis
Origin, insertion, innervation and action of brachialis
Medial and lateral aspect of the humeral shaft
Inserts into the ulna tuberosity just distal to the elbow joint
Flexion at the elbow
Musculocutaneous nerve with contributions from radial nerve
Origin, insertion, action, innervation of coracobrachialis
Coracoid process of scapular
Medial aspect of the humerus, through the axilla at the deltoid tuberosity-insertion
Flexion at the shoulder and weak adduction
Musculocutaneous nerve
Origin, insertion, action, innervation of Triceps brachii
Long head:infraglenoid tubercle of humerus
Medial:humerus superior to the radial groove
Lateral:humerus inferior to the radial groove
Insertion:distally converge into one tendon and insert into the olecranon of ulna
Extend the arm at the elbow
Radial nerve
I’m some individuals long head of the triceps is innervated by another nerve other than Radial nerve what is it?
Axillary nerve
A tap on the triceps tendon tests what spinal segment?
C7
