T14: Muscles of the Elbow Joint

Where does the SH of the biceps brachii originate?

coracoid process (scapula)

Where does the LH of the biceps brachii originate?

supraglenoid tubercle (scapula)

What is the insertion of the biceps brachii (LH & SH)?

radial tuberosity and bicipital aponeurosis

The __ nerve innervates the biceps brachii (LH & SH)?

musculocutaneous nerve

What motion do the biceps brachii (LH & SH) perform?

elbow flexion

What is the origin of the brachialis?

anterior distal surface of humerus

Where does the brachialis insert?

ulnar tuberosity of coracoid process

What innervates the brachialis?

musculocutaneous nerve

What motion does the brachialis perform?

elbow flexion

The brachioradialis originates at the--

lateral supracondylar ridge (humerus)

The brachioradialis inserts at the--

styloid process (radius)

What innervates the brachioradialis?

radial nerve

The long head of the triceps brachii originates at the--

infraglenoid tubercle

The lateral head of the triceps brachii originates at the--

superior lateral surface of the humerus

The medial head of the triceps brachii originates at the--

posterior distal surface of the humerus

True/False: the medial head of the triceps brachii is located superficial to the long and lateral heads

false; the medial head is located deep to the long and lateral heads

Where do the triceps brachii insert?

olecranon process of ulna

What innervates the triceps brachii?

radial nerve

The triceps brachii perform what motion?

elbow extension

Where does the anconeus insert?

lateral surface of olecranon process (ulna)

The anconeus originates at the--

lateral epicondyle of humerus

What innervates the anconeus?

radial nerve

What action does the anconeus perform?

stabilization and extension of the elbow