ANATOMY 6511 Cubital Fossa, Forearm, & Hand (Exam 2) 낱말 카드

Flexors

(anterior compartment)

Do flexors or extensors attach to the medial epicondyle of the humerus?

Extensors

(posterior compartment)

Do flexors or extensors attach to the lateral epicondyle of the humerus?

Proximal radioulnar joint

What joint is pictured?

Distal radioulnar joint

What joint is pictured?

Interosseous membrane

What structure of the forearm is pictured?

1. Humeroulnar joint

2. Humeroradial joint

3. Proximal radioulnar joint

What 3 joints make up the elbow joint?

Synovial

Hinge joint

What type of joint are the humeroulnar and humeroradial joints?

Synovial

Pivot joint

What type of joint are the proximal/distal radioulnar joints?

Flexion/Extension

What are the actions of the humeroulnar and humeroradial joints?

Pronation/Supination

What are the actions of the radioulnar joint?

1. Radial collateral ligament

2. Ulnar collateral ligament

3. Anular ligament

What 3 ligaments are found in the elbow joint?

VARUS

Adduction

Does the radial collateral ligament resist VARUS or VALGUS force? Is it adduction or abduction?

VALGUS

Abduction

Does the ulnar collateral ligament resist VARUS or VALGUS force? Is it adduction or abduction?

Allows head of radius to rotate freely

Supination/Pronation

What is the function of the anular ligament?

Radius

Lateral epicondyle

What structures are connected by the radial collateral ligament?

Ulna

Medial epicondyle

What structures are connected by the ulnar collateral ligament?

Radius

Ulna

What structures are connected by the anular ligament?

Radial collateral ligament

What elbow ligament is labelled as #4?

Ulnar collateral ligament

What elbow ligament is labelled as #8?

Anular ligament

What elbow ligament is labelled as #5?

FALSE

Thumb only has proximal and distal

True or False: Each finger has a proximal, middle, and distal phalange.

1. Scaphoid

2. Lunate

Which 2 carpal bones articulate with the radius?

FALSE

Radius ONLY

True or False: Carpal bones of the hand articulate with the radius and ulna.

Trapezium

Which carpal bone articulates with digit #1?

Trapezoid

Which carpal bone articulates with digit #2?

Capitate

Which carpal bone articulates with digit #3?

Hamate

Which carpal bone articulates with digits #4 and #5?

Ulnar n.

What nerve passes through the hook of the hamate?

Brachioradialis m.

What is the lateral border of the cubital fossa?

Pronator teres m.

What is the medial border of the cubital fossa?

Line between medial and lateral epicondyles of the humerus

What is the superior border of the cubital fossa?

Brachioradialis m.

What lateral forearm muscle is labelled?

Pronator teres m.

What medial forearm muscle is labelled?

LATERAL

1. Lateral antebrachial cutaneous n.

2. Biceps brachii tendon

3. Brachial a.

4. Median cubital v.

5. Median n.

MEDIAL

What are the 5 superficial contents of the cubital fossa? Name them from lateral to medial.

Median cubital v.

What is the most superficial structure in the cubital fossa?

1. Radial a.

2. Ulnar a.

(splits at cubital fossa)

What are the 2 branches of the brachial a.?

FALSE

Runs posterior to medial epicondyle (in cubital tunnel)

True or False: The cubital fossa contains the

Ulnar n.

Radial n. (+2 terminal branches)

Between brachialis m. and brachioradialis m.

What is the deep content of the cubital fossa? Between which 2 muscles is it located?

Ulnar a.

What artery does the common interosseous a. branch off from?

1. Anterior interosseous a.

2. Posterior interosseous a.

What are the 2 branches of the common interosseous a.?

Flexor

Does the anterior interosseous a. supply flexor or extensor muscles of the forearm?

Extensor

Does the posterior interosseous a. supply flexor or extensor muscles of the forearm?

Interosseous membrane

What structure physically divides the anterior and posterior interosseous arteries?

Ulnar a.

Is the superficial palmar arch formed primarily by the radial or ulnar a.?

Radial a.

Is the deep palmar arch formed primarily by the radial or ulnar a.?

1. Median n.

2. Ulnar n.

What 2 nerves innervate the anterior compartment of the forearm?

Radial n./Deep radial n.

What nerve innervates the posterior compartment of the forearm?

1. Superficial radial n. - Cutaneous/Sensory of dorsal hand

2. Deep radial n. - Motor of posterior forearm

What are the 2 branches of the radial n.? What are their functions?

Median n.

Does the ulnar or median n. innervate the MAJORITY of the forearm muscles?

Ulnar n.

Does the ulnar or median n. innervate the MAJORITY of the hand muscles?

4 superficial

1 intermediate

3 deep

How many superficial muscles are in the anterior compartment of the arm? Intermediate? Deep?

7 superficial

0 intermediate

5 deep

How many superficial muscles are in the posterior compartment of the arm? Intermediate? Deep?

Anterior interosseous a.

What is the primary blood supply to the anterior forearm?

Posterior interosseous a.

What is the primary blood supply to the posterior forearm?

1. Thenar - 3 muscles

2. Hypothenar - 3 muscles

3. Central - 4 muscles

4. Deep - 8 muscles

What are the 4 compartments of hand muscles? How many muscles are in each?

Flexor retinaculum

What structure forms the roof of the carpal tunnel?

Carpal bones

What forms the floor of the carpal tunnel?

4 flexor digitorum superficialis tendons

4 flexor digitorum profundus tendons

1 flexor pollicis longus tendon (thumb)

Median n. (

What are the 10 contents of the carpal tunnel?

Median n.

Carpal tunnel syndrome is caused by constant pressure on what nerve?

FALSE

Somatic nerve (localized pain)

True or False: The median n. is an autonomic nerve.

Scaphoid

What carpal bone is pictured?

Lunate

What carpal bone is pictured?

Triquetrum

What carpal bone is pictured?

Pisiform

What carpal bone is pictured?

Trapezium

What carpal bone is pictured?

Trapezoid

What carpal bone is pictured?

Capitate

What carpal bone is pictured?

Hamate

What carpal bone is pictured?

1. Trapezium

2. Pisiform

What 2 carpal bones are connected by the flexor retinaculum?