Chapter 9 Exercise 15
Flexes the forearm at the elbow
brachialis
ORIGIN: Distal anterior shaft of humerus INSERTION: Coronoid process of ulna
brachialis
ORIGIN:Spinous processes of thoracic vertebrae INSERTION:Medial border of scapula
rhomboid major
Raises and adducts (retracts) scapula
rhomboid major
Rotator cuff muscles all have origins on the
scapula
ORIGIN:Lateral surfaces of most ribs INSERTION:Medial border of scapula
serratus anterior
Used to thrust shoulder anteriorly (protraction), as when pushing something
serratus anterior
The action of the brachialis muscle is flexion of the elbow joint. (T or F)
true
There are more muscles that move the forearm than move the hand. (T or F)
false
ORIGIN: Lateral border of scapula INSERTION: Greater tubercle of humerus
teres minor
The belly of the flexor digitorum profundus muscle is located in the
anterior deep region of the forearm
Flexes and adducts arm at the shoulder along with pectoralis major
coracobrachialis
ORIGIN: Coracoid process of scapula INSERTION: Shaft of humerus
coracobrachialis
Abducts, extends, and flexes arm
deltoid
ORIGIN: Clavicle and spine and accordion of scapula INSERTION: Deltoid tuberosity of humerus
deltoid
Extends and adducts hand at the wrist
extensor carpi ulnaris
ORIGIN: Posterior ulna and interosseous membrane INSERTION: Middle and distal phalanges of finger 2
extensor indicis
Flexes wrist and adducts hand
flexor carpi ulnaris
ORIGIN: Anterior radius and interosseous membrane INSERTION: Distal phalanx of thumb
flexor pollicis longus
Chest and shoulder muscles that move the arm at the shoulder joint have insertions on the
humerus
Rotates arm laterally
infrsapinatus
ORIGIN: Medial epicondyle of humerus INSERTION: Palmar aponeurosis
palmaris longus
Pulls arm forward (flexion) and across chest (adduction) and rotates arm medially
pectoralis major
ORIGIN: Sternal ends of ribs 3-5 INSERTION: Coracoid process of scapula
pectoralis minor
Raises ribs in forceful inhalation or pulls scapula forward and downward
pectoralis minor
The belly of the muscle is usually _____________ the region pulled.
proximal to
Muscles located in the arm that move the forearm at the elbow joint have insertions on the
radius and ulna
ORIGIN: Subscapular fossa of scapula INSERTION: Lesser tubercle of humerus
subscapularis
Extends, adducts, and rotates arm medially
teres major
ORIGIN: Lateral border of scapula INSERTION: Intertubercular sulcus of humerus
teres major
Which of the following is not a rotator cuff muscle?
teres major
Extends the forearm at the elbow
tricep brachii
