Podcast
Questions and Answers
Which muscle has its origin at the radial supraglenoid tubercle of humerus?
Which muscle has its origin at the radial supraglenoid tubercle of humerus?
- Long head of the Biceps brachii (correct)
- Brachialis
- Short head of the Biceps brachii
- Coracobrachialis
Which nerve innervates both the biceps brachii and the brachialis muscles?
Which nerve innervates both the biceps brachii and the brachialis muscles?
- Median nerve
- Musculocutaneous nerve (correct)
- Radial nerve
- Ulnar nerve
Which of the following is NOT a function of the biceps brachii?
Which of the following is NOT a function of the biceps brachii?
- Flexion of the arm (correct)
- Assistance in flexing the elbow
- Supination of the forearm
- Flexion of the forearm when supinated
From which arterial supply does the coracobrachialis muscle receive its blood supply?
From which arterial supply does the coracobrachialis muscle receive its blood supply?
Which muscle inserts onto the coronoid process and tuberosity of the ulna?
Which muscle inserts onto the coronoid process and tuberosity of the ulna?
Flashcards
Biceps Brachii
Biceps Brachii
A muscle with two heads that flexes and supinates the forearm.
Long Head Attachment
Long Head Attachment
Attaches at the radial supraglenoid tubercle of the humerus.
Coracobrachialis
Coracobrachialis
A muscle that flexes and adducts the arm at the shoulder.
Brachialis
Brachialis
Signup and view all the flashcards
Musculocutaneous Nerve
Musculocutaneous Nerve
Signup and view all the flashcards
Study Notes
Biceps Brachii Muscle
- Origin: Long head—Radial supraglenoid tubercle of humerus; Short head: tip of coracoid process of scapula
- Insertion: Radial tuberosity, fascia of forearm via bicipital aponeurosis
- Nerve Supply: Musculocutaneous nerve (C5, C6)
- Action: Supinates forearm; Flexes forearm when supinated
Coracobrachialis Muscle
- Origin: Tip of coracoid process of scapula
- Insertion: Middle third of medial surface of humerus
- Nerve Supply: Musculocutaneous nerve (C5, C6, C7)
- Action: Flexes and adducts arm
Brachialis Muscle
- Origin: Distal half of anterior surface of humerus
- Insertion: Coronoid process and tuberosity of ulna
- Nerve Supply: Musculocutaneous nerve (C5, C6)
- Action: Flexes forearm
Blood Supply
- Biceps brachii, coracobrachialis and brachialis muscles are supplied by muscular branches of brachial artery.
- Brachialis is additionally supplied by radial recurrent artery.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
