week 2/1 - arm and elbow

Question 1

Name the joints in the radius

Answer 1

elbow joint, superior and inferior radioulnar joint and wrist joint

Question 2

muscles attached to the radius

Answer 2

• all supinators and pronator muscles
• brachioradialis

Question 3

ULNA
Muscles attached to ulna

Answer 3

• Triceps
• brachialis
• supinator and pronator quadratus

Question 4

ELBOW JOINT
where does the articulation occur

Answer 4

between the trochlea notch of the ulna and trochlear of the humerus between the head of the radius and capitulum of humerus

Question 5

what type of joint

Answer 5

synovial and hinge joint

Question 6

what does the radiocollateral ligament resist

Answer 6

adduction on forearm on arm

Question 7

what does the ulnacollateral ligament resist

Answer 7

abduction of forearm on arm

Question 8

list the movements for brachialis and biceps brachii muscle

Answer 8

Flexion

Question 9

name the movement of the tricep muscle

Answer 9

EXTENSION

Question 10

relationships of the elbow joint

Answer 10

posteriorly triceps
- anteriorly the floor of cubital fossa (brachialis supinator)
- medially > superficial anterior forearm muscles
- laterally superficial posterior forearm muscles

Question 11

muscle of the arm

Answer 11

anterior and posterior

Question 12

name the muscles of the anterior portion of arm

Answer 12

corocobrachialis, brachialis, biceps brachii

Question 13

posterior arm muscles

Answer 13

triceps

Question 14

attachment and insertion of coracobrachialis

Answer 14

attachment: coracoid process of scapula
insertion: to the shaft of the humerus

Question 15

attachment and insertion of brachialis

Answer 15

attachment; shaft of humerus
insertion: to the coronoid process and tuberosity of ulna

Question 16

attachment and insertion of biceps brachii

Answer 16

attachment: deep anterior arm, supraglenoid tubercle and coracoid process of scapula to
insertion: radioulnar joints, supination

Question 17

attachment and insertion of triceps

Answer 17

infraglenoid tubercle of scapula shaft of humerus to the olecranon of ulna

Question 18

Acts of coracobrachialis

Answer 18

• acts on shoulder joint > flexion
• musculocutaneous nerve usually passes through it < innervates it

Question 19

acts of brachialis

Answer 19

• acts on elbow joint > flexion
• ## innervation > musculocutaneous nerve

Question 20

acts of biceps brachii

Answer 20

• shoulder joint < flexion
• radioulnar joints < supination

Question 21

acts of triceps

Answer 21

• acts on shoulder joint > extension
• covers radial nerve in spinal groove
• innervation radial nerve

Question 22

what is the cubital fossa

Answer 22

• anterior to the elbow joint

Question 23

boundaries of the cubital fossa

Answer 23

• superior border > a line between epicondyles of the humerus
• medial border > lateral border of pronator teres
• lateral border > medial border of brachioradialis

Question 24

contents of cubital fossa from medial to latera;

Answer 24

• medial to lateral > medial nerve, brachial artery, biceps tendon and aponeurosis

Question 25

roof of cubital fossa

Answer 25

basilic vein, medial cubital vein, cephalic vein and MCNF and LCNF

Question 26

roof of cubital fossa

Answer 26

basilic vein, medial cubital vein, cephalic vein and MCNF and LCNF

Question 27

Muscle description

Answer 27

action on joints

Question 28

prime mover

Answer 28

acting concentrically

Question 29

stabiliser

Answer 29

muscle prevents unwanted actions

Question 30

neutraliser

Answer 30

neutralises it

Question 31

brake against gravity

Question 32

contraction

Answer 32

• concentric > muscles shortening when acting
• isometric > generates tension but not shortening
• eccentric > muscles getting longer when acting