Muscular System Pt. 5

Question 1

Origin of Bicep Brachii

Answer 1

• Long head: Supraglenoid tubercle of scapula
• Short head: Coracoid process of scapula

Question 2

Insertion of Bicep Brachii

Answer 2

Radial Tuberosity

Question 3

Actions of Bicep Brachii

Answer 3

• Elbow Flexion
• Forearm Supination
• Flexion of the shoulder

Question 4

Origin of Brachialis

Answer 4

Anterior shaft of humerus

Brachialis is the anterior part of the upper limb

Question 5

Insertion of Brachialis

Answer 5

Coronoid process of ulna

Question 6

Actions of Brachialis

Answer 6

Elbow Flexion

Question 7

Origin of Brachioradialis

Means: radial-lateral side

Answer 7

Lateral distal humerus

Question 8

Insertion of Brachioradialis

Answer 8

Styloid process of radius

Question 9

Actions of Brachioradialis

Answer 9

Elbow Flexion

Question 10

Origin of Tricep Brachii

Answer 10

• Long: Infraglenoid tubercle of scapula
• Medial: Posterior medial humerus
• Lateral: Posterior lateral humerus

Question 11

Insertion of Tricep Brachii

Answer 11

Olecranon process of ulna

All three heads cross elbow and join olecranon

Question 12

Actions of Tricep Brachii

Answer 12

• Extension of Elbow
• Extension of arm at shoulder

Extension of arm at shoulder is only long head

Question 13

What is the purpose of the anconeus?

Answer 13

Synergist for the Tricep Brachii

Question 14

Origin of Anconeus

Answer 14

Lateral epicondyle of humerus

Question 15

Insertion of Anconeus

Answer 15

• Olecranon
• Shaft of Ulna

Question 16

Actions of Anconeus

Answer 16

Elbow Extension