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Bioscience 610
Arm and Cubital Fossa
28
Science
Graduate
02/13/2011

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Cards

Term
Where is the proximal attachments for the biceps muscle?
Definition
Short-Head: Attaches to the coracoid process of the scapula
Long Head: Attaches to the surpraglenoid tubercle of the scapula
Term
Where is the distal attachment of the biceps brachi?
Definition
The tuberosity of the radius
Term
What is the function of the biceps brachi?
Definition
The biceps brachi muscle supinates and flexes the forearm
Term
Where is the proximal attachment of the coracobrachialis?
Definition
The proximal attachment of the coracobrachialis is the coracoid process of the scapula
Term
Where is the distal attachment of the coracobrachialis muscle?
Definition
The distal attachment for the coracobrachialis is the medial side of the shaft of the humerus
Term
What is the function of the coracobrachialis?
Definition
The coracobrachialis muscle adducts and flexes the humerus
Term
Where is the brachialis muscle relative to the biceps brachii muscle?
Definition
The brachialis is deep to the biceps brachii
Term
What is the proximal attachment of the brachialis?
Definition
Anterior surface of the disal 1/2 of the humerus
Term
Where is the distal attachment of the brachialis muscle?
Definition
Coronoid process of the ulna
Term
What is the function of the brachialis?
Definition
Flexes the forearm
Term
Where does the brachial artery begin?
Definition
The brachial artery begins at the inferior border of the teres major
Term
Where does the brachial artery end?
Definition
The brachial artery ends at the level of the elbow by branching into the ulnar artery and radial artery
Term
The brachial artery has 3 named arteries,what are they?
Definition
Deep artery of the arm
Superior Ulnar collateral artery
Inferior ulnar collateral artery
Term
What is the cubital fossa?
Definition
The cubital fossa is the depression on the anterior aspect of the elbow
Term
Why is the cubital fossa clinically important?
Definition
Because it contains superficial veins that are used for venipuncture. Large nerves and veins pass through this region to enter the forearm
Term
What is the lateral boundary of the cubital fossa?
Definition
Brachioradialis muscle
Term
What is the medial boundary of the cubital fossa?
Definition
Pronator teres
Term
What is the superficial boundary of the cubital fossa?
Definition
Antebrachial fascia reinforced by the bicipital aponeurosis
Term
What is the deep boundary (floor of the cubital fossa)?
Definition
Brachialis muscle
Supinator muscle
Term
What protects the brachial artery and median nerve during a venipuncture?
Definition
The bicipital aponeuosis
Term
What are the relative positions of these structures in the cubital fossa (Biceps brachii tendon, brachial artery, median nerve)
Definition
Biceps brachii tendon is lateral
Brachial artery is intermediate
Median nerve is medial
Term
The triceps brachii has three proximal attachments, what are they?
Definition
Long head: infraglenoid tubercle of the scapula
Lateral head: Posterior surface of the humerus superior to the radial groove
Medial head: Posterior surface of the humerus inferior to the radial groove
Term
What is the distal attachment of the triceps brachii?
Definition
The olecrannon of the ulna
Term
What is the function of the triceps brachii?
Definition
Extends the forearm
Term
Where is the proximal attachment of the anconeus muscle?
Definition
Lateral epicondyle of the humerus
Term
Where is the distal attachment of the anconeus muscle?
Definition
Lateral surface of the olecrannon and the superior part of the posterior surface of the ulna
Term
What is the function of the anconeus muscle?
Definition
It assists the triceps brachii in extension of the forearm
Term
The medial cutaneous nerve is often mistaken for what?
Definition
The Ulnar Nerver
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