A&P Lab, Final Exam, Exercise 21

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What is the action of the brachialis muscle?

flexes the forearm at the elbow
What is the action of the coracobrachialis muscle?

flexes and adducts arm at the shoulder along with pectoralis major
What is the action of the deltoid muscle?

abducts arm
What is the action of the extensor carpi ulnaris muscle?

extends and adducts hand at the wrist
What is the action of the flexor carpi ulnaris muscle?

flexes and adducts hand at wrist
What is the action of the infraspinatus muscle?

rotates arm laterally
What is the action of the pectoralis major muscle?

pulls arm forward (flexion) and across chest (adduction) and rotates arm medially
What is the action of the pectoralis minor muscle?

raises ribs in forceful inhalation or pulls scapula forward and downward
What is the action of the rhomboid major muscle?

raises and adducts scapula
What is the action of the serratus anterior muscle?

used to thrust shoulder anteriorly (protraction), as when pushing something
What is the action of the teres major muscle?

extends, adducts, and rotates arm medially
What is the action of the triceps brachii muscle?

extends, adducts, and rotates arm medially
What is the origin and insertion of the rhomboid muscle?

origin: spines of upper thoracic vertebrae

insertion: medial border of scapula
What is the origin and insertion of the serratus anterior muscle?

origin: outer surfaces of upper ribs

insertion: ventral surface of scapula
What is the origin and insertion of the pectoralis minor muscle?

origin: sternal ends of upper ribs

insertion: coracoid process of scapula
What is the origin and insertion of the coracobrachialis muscle?

origin: coracoid process of scapula

insertion: shaft of humerus
What is the origin and insertion of the teres major muscle?

origin: lateral border of scapula

insertion: intertubercular groove of humerus
What is the origin and insertion of the subscapularis muscle?

origin: anterior surface of scapula

insertion: lesser tubercle of humerus
What is the origin and insertion of the teres minor muscle?

origin: lateral border of scapula

insertion: greater tubercle of humerus
What is the origin and insertion of the brachialis muscle?

origin: anterior shaft of humerus

insertion: coronoid process of ulna
What is the origin and insertion of the pronator teres muscle?

origin: medial epicondyle of humerus and coronoid process of ulna

insertion: lateral surface of radius
What is the origin and insertion of the brachioradialis muscle?

origin: distal lateral end of humerus

insertion: lateral surface of radius above
What is the origin and insertion of the flexor carpi radialis muscle?

origin: medial epicondyle of humerus

insertion: base of second and third metacarpals
What is the origin and insertion of the palmoris longus muscle?

origin: medial epicondyle of humerus

insertion: fascia of palm

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A&P Lab, Final Exam, Exercise 21

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Questions to know from this module...

Updated

2010-12-12T03:21:08Z

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