The elbow

Question 1

ulno humeral joint

Answer 1

synovial hinge joint
articulating bones ulna and humerus
1 plane of movement in sagittal plane

Question 2

medial and lateral epicondyles of humerus

Answer 2

bony points at bottom of humerus bone on either side

Question 3

radial head

Answer 3

head of radius

Question 4

radial and ulna tuberosity

Answer 4

raised bump on radius ad ulna shaft

Question 5

radial fossa

Answer 5

indent on radial side of humerus (radius fits into when flexed)

Question 6

capitulum

Answer 6

round piece on the radial side of the humerus (lateral)

Question 7

trochlea & trochlea notch

Answer 7

round piece on ulna side of humerus (medial)
notch - indent inside where trochlea fits into ulna

Question 8

coronoid process

Answer 8

points top part of ulna

Question 9

coronoid fossa

Answer 9

indent where coronoid process fits into when arm is flexed (like radial fossa)

Question 10

olecranon

Answer 10

pyramid shape underneath elbow, pointy

Question 11

olecranon fossa

Answer 11

the indent that the olecranon fits into when arm is extended

Question 12

super condylar ridges

Answer 12

running up sides of humerus, attachment points for muscles

Question 13

muscles that flex the arm

Answer 13

biceps brachii - coracoid process to radial tuberosity (musculocutaneous nerve C5-C6)
Brachialis - anterior shaft of humerus, coronoid process to ulna tuberosity (musculocutaneous nerve C5,C6)
Brachioradialis -lateral supercondylar ridge of humerus radial styloid process

Question 14

muscles that extend the arm

Answer 14

triceps brachii - 3 heads long head, lateral head -posterior shaft of humerus, medial head inferior of the radial groove to olecranon process (radial nerve C7,C8)
anconeus - latera; epicondyle of humerus to olecranon process (C7,C8)

Question 15

muscles that pronate the arm

Answer 15

pronator teres - medial epicondyle of humerus to lateral surface of radius (median nerve C6,C7)
pronator quadratus - anterior surface of the distal ulna to ant surface of distal radius (Median nerve C8-T1)

Question 16

muscles that supinate the arm

Answer 16

supinator muscle - lateral epicondyle on ulna to proximal radius, wraps around radius when it pronates (posterior interosseous nerve C5,C6)

Question 17

medial collateral ligament

Answer 17

inner side of elbow (ulna) - attaches from medial epicondyle of humerus to coronoid process of ulna

Question 18

lateral collateral ligament

Answer 18

lateral side of humerus/ radial side - lateral epicondyle of humerus to head of radius binding with annular ligament

Question 19

annular ligament

Answer 19

posterior radial notch to anterior radial notch wrapped round radial head

Question 20

quadrate ligament

Answer 20

joins radius and ulna together inside notch - inferior border of radial notch on ulna to neck of radius