Forarm

Question 1

Elbow joint type

Answer 1

Hinge

Question 2

Elbow joint articulations share common ———-

Answer 2

Synovial cavity

Question 3

Function of the fat pads

Answer 3

• accommodate bony processes during extension and flexion of the elbow
• prevent friction
• provide cushioning

Question 4

Head of the radius for communication with

Answer 4

Capitulum

Question 5

Ligaments of the elbow joint

Answer 5

• radial collateral lig(lateral)
• ulnar collateral lig(medial)
• anular lig of radius

Question 6

-radial collateral lig(lateral)
-ulnar collateral lig(medial)
Function

Answer 6

Prevent addiction and abduction so u can only flex and extend the elbow joint

Question 7

Function of anular lig

Answer 7

Allow the radial head to slide against the radial notch of ulna during pronation and supination

Question 8

When the radial collateral lig (lateral) is damaged

Answer 8

Tennis elbow

Question 9

Tennis’s elbow

Answer 9

Inflammation/tear in the collateral radial lig result from excessive pulling of that lig

Question 10

Tennis elbow sports

Answer 10

Tennis and baseball

Question 11

Proximal radioulnar joint type

Answer 11

Pivot joint of synovial joint

Question 12

Proximal radioulnar joint articulation

Answer 12

Head of the radius articulate with the radial notch of ulna

Question 13

Proximal radioulnar joint movement

Answer 13

During supination and pronation of the forearm the head of the radius rotates within the ring formed by anular lig and radial notch of ulna

Question 14

Dislocation of radial head occur in

Answer 14

Children under 5years

Question 15

How the dislocation of radial head happened ?

Answer 15

Not yet developed head of the radius can easily slip out the annular lig

Question 16

Distal radioulnar joint type

Answer 16

Pivot type of synovial joint

Question 17

Articulation of the distal radioulnar joint

Answer 17

Head of the ulna articulate with the ulnar notch of the radius

Question 18

Articular disc in the distal radioulnar joint

Answer 18

Afibrocartilaginous articular disc binds the end of the ulna and radius together

Question 19

What is the role of the articular disc in the distal radioulnar joint

Answer 19

Separates the cavity of the distal radioulnar joint from tha cavity of the wrist joint

Question 20

Distal radioulnar joint movement

Answer 20

during pronation and supination of the forearm and hand, the distal end of the
radius moves anteriorly and medially, crossing the ulna anteriorl

Question 21

Wrist joint type

Answer 21

Condyloid type of synovial joint

Question 22

Articulation of wrist joint

Answer 22

• distal end of the radius
• articular disc overlying distal end of the ulna
• proximal row of carpal bone except ***pisiform

Question 23

Carbal bones involved in the wrist joint

Answer 23

• scaphoid
• lunate
• triquetrium

Question 24

The fibrous capsule surrounds the wrist joint and is attached to the distal —————-
and proximal ————-

Answer 24

Distal end of the radius and ulna

Proximal row of carpals.

Question 25

Palmar and dorsal radiocarpal ligaments passes

Answer 25

From the radius to the two rows of the carpals

Question 26

What are the movements of the wrist joint?

Answer 26

Adduction abduction, Flexion, Extension

Question 27

What limits the abduction of the hand at the rest joint?

Answer 27

Styloid process of the radius

Question 28

What are the compartment of the forearm ?

Answer 28

1) anterior:flexor pronation compartment | 2) posterior:extensor supination compartment

Question 29

All the ant. Muscles supplied by

Answer 29

Median nerve with 2exception 1) except flexor carpi ulnaris 2) medial part of flexor digitorum profundus.

Question 30

All post. Muscles are supplied by

Answer 30

Radial nerve

Question 31

The flexor muscle of the forearm in the anterior compartment of the forearm are separated from the extensor muscles of the posterior compartment by

Answer 31

radius and the ulna and the interosseous membrane that connects them.

Question 32

The flexor muscles are arranged in

Answer 32

three layers or groups, superficial, intermediate deep.

Question 33

All the flexor muscles of the ant. Compartment are attached at least in part by the

Answer 33

common flexor tendon from the medial epicondyle of the | humerus.

Question 34

Superficial muscles of the ant. Compartment

Answer 34

1) pronation teres 2) flexor carpi radialis 3) palmaris longus 4) flexor carpi ulnaris 5) flexor digitorum superficialis

Question 35

Middle muscles of the ant. Compartment

Answer 35

1) flexor digitorium profundus | 2) flexor policies longus

Question 36

Deep muscles of the ant. Compartment

Answer 36

Pronation quadratics

Question 37

Muscles cross the elbow joint

Answer 37

The 5 superficial muscles

Question 38

Function of the muscles of the superficial anterior compartment

Answer 38

1)Flexor carpi radialis 2)flexor carpi ulnaris 3)palmaris longus All act together to flex the hand at wrist joint

Question 39

Flexor carpi radialis function alone to

Answer 39

Abduct the hand

Question 40

flexor carpi ulnaris function alone to

Answer 40

Adduct the hand

Question 41

Palmaris longus function alone

Answer 41

Absent; useful guide to the median nerve at the wrist joint.

Question 42

FLEXOR DIGITORUM SUPERFICIALIS | Function:

Answer 42

Flexes middle phalanges at proximal interphalangeal joints of medial four digits.

Question 43

FLEXOR DIGITORUM PROFUNDUS | Function;

Answer 43

Flexes distal phalanges at distal interphalangeal joints of medial four digits.

Question 44

FLEXOR DIGITORUM PROFUNDUS | Nerve supply

Answer 44

The lateral part supplied by median nerve and the medial part supplied by ulnar nerve.

Question 45

FLEXOR POLLICIS LONGUS | Function

Answer 45

- flexes the interphalangeal joint of the thumb - flexes the metacarpophalangeal and carpometacarpal joint of the thumb - flexion of the wrist

Question 46

``` PRONATOR TERES (superficial & QUADRATUS(deep) But share the same function ```

Answer 46

Pronator quadratus is the prime mover in pronation assisted by the pronator teres when more speed and power are needed. • The pronator quadratus also helps the interosseous membrane hold the radius and ulna together.

Question 47

The extensor muscle of the forearm can be organized into three functional groups.

Answer 47

1) 1ST MUSCLE THAT EXTEND AND ABDUCT OR ADDUCT THE HAND AT THE WRIST JOINT 2) 2nd MUSCLES THAT EXTEND THE MEDIAL FOUR DIGITS 3) 3rd MUSCLES THAT EXTEND OR ABDUCT THE 1ST DIGIT OR THUMB.

Question 48

1ST MUSCLE THAT EXTEND AND ABDUCT OR ADDUCT THE HAND AT THE WRIST JOINT

Answer 48

Extensor carpi radialis longus (abduct) Extensor carpi radialis brevis (abduct) Extensor carpi ulnaris (adduct)

Question 49

2nd MUSCLES THAT EXTEND THE MEDIAL FOUR DIGITS

Answer 49

- extensor digitorum - extensor digiti minimi - extensor indicis

Question 50

3rd MUSCLES THAT EXTEND OR ABDUCT THE 1ST DIGIT OR THUMB.

Answer 50

- abductor policies longus - extensor pollicis brevis - extensor pollicis longus

Question 51

only muscles of the posterior compartment that do | not cross the wrist and therefore are incapable of acting on it.

Answer 51

BRACHIORADIALIS

Question 52

BRACHIORADIALIS help in flexion of

Answer 52

Elbow joint not wrist joint

Question 53

BRACHIORADIALIS exception of

Answer 53

Cc

Question 54

The cubital fossa is a triangular depression formed between two muscles of the forearm?

Answer 54

brachioradialis( | & pronator teres).

Question 55

The floor of cubical fossa is formed by—— and roof——

Answer 55

- brachial is | - deep fascia , bicipital aponeurosis and skin

Question 56

What is the clinical importance's of the cubital fossa?

Answer 56

They withdrawal blood from it

Question 57

Arrangement of veins on the cubical fossa

Answer 57

It forms communication bt the cephalic and the basilic veins

Question 58

Lateral border of cubical fossa

Answer 58

BRACHIORADIALIS