Question

part b assessments
name the muscle indicated by the following combinations of origin and insertion. 3
muscle

1. spinous processes of upper thoracic vertebrae

medial border of scapula

1. anterior surfaces of upper ribs

medial border of scapula

1. anterior surfaces of ribs 3 - 5

coracoid process of scapula

1. coracoid process of scapula

shaft of humerus

1. lateral border of scapula

intertubercular sulcus of humerus

1. anterior surface of scapula

lesser tubercle of humerus

1. lateral border of scapula

greater tubercle of humerus

1. anterior shaft of humerus

coronoid process of ulna

1. medial epicondyle of humerus and coronoid process of ulna

lateral surface of proximal radius

1. distal lateral end of humerus

lateral surface of radius above styloid process

1. medial epicondyle of humerus

base of second and third metacarpals

1. medial epicondyle of humerus

fascia of palm

Explanation:

1. The rhomboid major muscle originates from the spinous processes of the upper thoracic vertebrae and inserts on the medial border of the scapula.
2. The serratus anterior muscle has its origin on the anterior surfaces of the upper ribs and inserts on the medial border of the scapula.
3. The pectoralis minor muscle originates from the anterior surfaces of ribs 3 - 5 and inserts on the coracoid process of the scapula.
4. The coracobrachialis muscle has its origin at the coracoid process of the scapula and inserts on the shaft of the humerus.
5. The teres major muscle originates from the lateral border of the scapula and inserts on the intertubercular sulcus of the humerus.
6. The subscapularis muscle has its origin on the anterior surface of the scapula and inserts on the lesser tubercle of the humerus.
7. The teres minor muscle originates from the lateral border of the scapula and inserts on the greater tubercle of the humerus.
8. The brachialis muscle has its origin on the anterior shaft of the humerus and inserts on the coronoid process of the ulna.
9. The pronator teres muscle originates from the medial epicondyle of the humerus and the coronoid process of the ulna and inserts on the lateral surface of the proximal radius.
10. The brachioradialis muscle has its origin at the distal lateral end of the humerus and inserts on the lateral surface of the radius above the styloid process.
11. The flexor carpi radialis muscle originates from the medial epicondyle of the humerus and inserts on the base of the second and third metacarpals.
12. The palmaris longus muscle has its origin at the medial epicondyle of the humerus and inserts on the fascia of the palm.

Answer:

1. Rhomboid major
2. Serratus anterior
3. Pectoralis minor
4. Coracobrachialis
5. Teres major
6. Subscapularis
7. Teres minor
8. Brachialis
9. Pronator teres
10. Brachioradialis
11. Flexor carpi radialis
12. Palmaris longus