The Arm and Cubital Fossa Flashcards
junction between the arm (brachium) & forearm regions (antebrachium)
the cubital fossa
What are some superficial structures of the cubital fossa
- cephalic vein
- median cubital vein
- medial epicondyle
- basilic vein
- Median antebrachial vein
What are some subcutneous features ofo the cubital fossa?
- cephallic vein
- biceps brachii
- basillic vein
-median cubital vein
-
What is a common flexor origin?
the medial epicondyle
What is the lateral boundary of the cubital fossa?
brachioradialis muscle
What is the medial boundary of the cubital fossa?
pronator teres muscle
What is the Superior boundary of the cubital fossa?
an imaginary line between medial & lateral epicondyles M of humerus
What is the Roof of the cubital fossa?
skin, superficial & deep fascia,
bicipital aponeurosis
What is the floor of the cubital fossa?
supinator (deep, not shown) and brachialis muscles
- median nerve
- Brachial a. with bifurcation of radial & ulnar arteries
- brachial veins (venae comitantes)
- tendon of biceps brachii & bicipital
aponeurosis - radial nerve (deeper - shown on next slide)
• deep radial nerve
• superficial radial nerve
Contents of the Cubital Fossa
What is posterior to the cubital fossa region?
elbow region
The following are contents of what region? ‘
• triceps and olecranon process
• anconeus
• ulnar nerve runs posterior to medial epicondyle of humerus
• posterior ulnar recurrent artery
also runs posterior to medial
epicondyle
Contents of the elbow
The anterior compartment of the arm contains what muscle types?
flexors
The Posterior compartment of the arm contains what muscle types?
extensors
The ______ ______ _____ divides the brachium into and anterior and posterior compartment
medial intermuscular septa
The _____ and _____ muscles lie in the anterior brachial compartment.
biceps
brachialis
The ______ muscles lie in the posterior brachial compartment
triceps
What brachial/ cutaneous nerves have radial nerve origins?
posterior cutaneous nerve of arm (posterior brachial cutaneous nerve)
posterior cutaneous nerve of forearm (posterior antebrachial cutaneous nerve)
posterior cutaneous nerve of arm (posterior brachial cutaneous nerve)
What muscles of the arm are located in the anterior (flexor) compartment
biceps brachii
brachialis
coracobrachialis
What innervates the muscles of the arm located in the anterior compartment?
musculocutaneous nerve.
supraglenoid tubercle of scapula and coracoid process of scapula is Proximal Attachment of what Muscle?
the biceps brachii
-radial tuberosity and fascia of forearm
via bicipital aponeurosis is distal Attachment of what muscle?
biceps brachii
- supinates forearm, when supine will flex forearm
- resists dislocation of shoulder (short head) are actions of what muscle?
the biceps brachii
innervation of the biceps brachii
- musculocutaneous nerve (C5, C6)
-coracoid process of scapula is Proximal Attachment of what muscle?
coracobrachialis
-middle 1/3 of medial humeral surface is Distal Attachment of what muscle?
coracobrachialis
- flexes & adducts arm at shoulder joint
- resists dislocation of shoulder joint are actions of what muscle?
coracobrachialis
innervation of coracobrachialis
- musculocutaneous nerve (C5, C6, C7)
-distal ½ of anterior surface of humerus is Proximal Attachment of what muscle?
Brachialis
-coronoid process and tuberosity of ulna is Distal Attachment of what muscle?
Brachialis
-flexes forearm at elbow joint are Actions of what muscle?
Brachialis
innervation of Brachialis
- musculocutaneous nerve (C5, C6)
- Lateral portions may receive radial nerve contributions
blood supply of Brachialis
- Brachial artery
what muscles comprise the posterior (extensor) compartment of the brachium.
• triceps brachii
long head
lateral head
medial head
• anconeusWhat innervates the muscles of the posterior (extensor) compartment of the brachium.
radial nerve.
___ vein runs alongside neurovascular bundle which could damage the median nerve
Basilic vein
