week 2/1 - arm and elbow Flashcards
Name the joints in the radius
elbow joint, superior and inferior radioulnar joint and wrist joint
muscles attached to the radius
- all supinators and pronator muscles
- brachioradialis
ULNA
Muscles attached to ulna
- Triceps
- brachialis
- supinator and pronator quadratus
ELBOW JOINT
where does the articulation occur
between the trochlea notch of the ulna and trochlear of the humerus between the head of the radius and capitulum of humerus
what type of joint
synovial and hinge joint
what does the radiocollateral ligament resist
adduction on forearm on arm
what does the ulnacollateral ligament resist
abduction of forearm on arm
list the movements for brachialis and biceps brachii muscle
Flexion
name the movement of the tricep muscle
EXTENSION
relationships of the elbow joint
posteriorly triceps
- anteriorly the floor of cubital fossa (brachialis supinator)
- medially > superficial anterior forearm muscles
- laterally superficial posterior forearm muscles
muscle of the arm
anterior and posterior
name the muscles of the anterior portion of arm
corocobrachialis, brachialis, biceps brachii
posterior arm muscles
triceps
attachment and insertion of coracobrachialis
attachment: coracoid process of scapula
insertion: to the shaft of the humerus
attachment and insertion of brachialis
attachment; shaft of humerus
insertion: to the coronoid process and tuberosity of ulna
attachment and insertion of biceps brachii
attachment: deep anterior arm, supraglenoid tubercle and coracoid process of scapula to
insertion: radioulnar joints, supination
attachment and insertion of triceps
infraglenoid tubercle of scapula shaft of humerus to the olecranon of ulna
Acts of coracobrachialis
- acts on shoulder joint > flexion
- musculocutaneous nerve usually passes through it < innervates it
acts of brachialis
- acts on elbow joint > flexion
- ## innervation > musculocutaneous nerve
acts of biceps brachii
- shoulder joint < flexion
- radioulnar joints < supination
acts of triceps
- acts on shoulder joint > extension
- covers radial nerve in spinal groove
- innervation radial nerve
what is the cubital fossa
- anterior to the elbow joint
boundaries of the cubital fossa
- superior border > a line between epicondyles of the humerus
- medial border > lateral border of pronator teres
- lateral border > medial border of brachioradialis
contents of cubital fossa from medial to latera;
- medial to lateral > medial nerve, brachial artery, biceps tendon and aponeurosis
