Chapter 7: The Forearm (Ulna and Radius)

Question 1

__________ - is longer and medial to the radius. The ulna gets smaller distally.

Answer 1

ulna bone

Question 2

What are the two prominent projections of the proximal end of the ulna?

Answer 2

1. Olecranon process
2. Coronoid process

Question 3

___________ - projects proximally from the posterior aspect of the ulna.

Answer 3

Olecranon process

Question 4

On the lateral side of the ulna there is a smooth rounded concavity called the ________ which articulates with the head of the radius. There is also a ___________ which articulates the trochlea of the humerus.

Answer 4

radial notch

trochlear notch

Question 5

What part of ulna is Inferior to the coronoid process?

Answer 5

tuberosity of the ulna

Question 6

__________ - contains a supinator crest and fossa which is the attachment point for the deep part of the supinator muscle.

Answer 6

body of the ulna

Question 7

________ - is shorter than the ulna and is located laterally to the ulna.

Answer 7

radius

Question 8

What contains the proximal part of the radius?

Answer 8

1. The head of the radius
2. The neck of the radius
3. The radial tuberosity

Question 9

___________ - articulates with the capitulum of the humerus when the forearm flexes and extends. It also articulates medially with the radial notch of ulna.

Answer 9

head of the radius

Question 10

____________ - lies on the proximal, medial aspect of the radius, just distal to neck (attachment of biceps)

Answer 10

radial tuberosity

Question 11

_____________ - runs obliquely (diagonally) across the body from radial tuberosity to area of greatest bowing.

Answer 11

anterior oblique line

Question 12

The body has a sharp ______________ for attachment of interosseous membrane.

Answer 12

interosseous border

Question 13

There is a ____________ on the medial, distal end of the radius for the head of the ulna. Laterally the radius tapers abruptly into the _______________ .

Answer 13

medial ulnar notch

radial styloid process

Question 14

There is a ______________ on posterior distal end of radius (Lister’s tubercle).

Answer 14

dorsal radial tubercle

Question 15

Fracture that occurs at the distal end of the radius.

Answer 15

Colles fracture