Osteology: Radius and Ulna

Question 1

Lateral bone of the forearm

Answer 1

Radius

Question 2

2 Structural components of the radius

Answer 2

1. Thickens distally

2. Slightly convex laterally

Question 3

Where is the head and neck of the radius?

Answer 3

The proximal end of the radius

Question 4

What attaches at the radial tuberosity?

Answer 4

1 of the biceps brachii attachments

Question 5

What kind of joint is the radius to the ulna?

Answer 5

Fibrous, syndesmosis

known from the interosseous border

Question 6

The most proximal indentation on the radius

Answer 6

Fovea

Question 7

The most distal projection on the radius

Answer 7

Styloid Process

Question 8

What two structures can you see in pronation on the radius?

Answer 8

1. Dorsal Tubercle

2. Ulnar Notch

Question 9

A.k.a for Dorsal Tubercle

Answer 9

Lister’s Tubercle

Question 10

Describe the ulnar notch

Answer 10

Indentation on the radius for the ulna to articulate with. (Distal radius)

Question 11

Medial bone in the forearm

Answer 11

Ulna

Question 12

What is the ulna latin for?

Answer 12

The elbow

Question 13

Where is the olecranon?

Answer 13

Proximal ulna, articulates with the olecranon fossa of the humerus

Question 14

Describe the trochlear notch

Answer 14

“Spool-shaped”

On ulna, articulates with the trochlea of the humerus

Question 15

Describe the coronoid process

Answer 15

“Crown-shaped”

On ulna, articulates fits into coronoid fossa of the humerus

Question 16

Describe the radial notch

Answer 16

Indentation on the ulna for the radius to articulate with. (Proximal ulna)

Question 17

What attaches at the ulnar tuberosity?

Answer 17

Brachialis

Question 18

Most distal projection on the ulna

Answer 18

Styloid process

Question 19

Where is the head of the ulna?

Answer 19

Distal end of the ulna

Question 20

How is the radial tuberosity and ulnar tuberosity in relation to each other?

Answer 20

Relatively adjacent at proximal aspect of the bones

Question 21

How are the two styloid processes in relation to each other?

Answer 21

• Both at the distal end of the bone

- Radial longer than ulnar

Question 22

Where are the heads in relation to each other?

Answer 22

Different ends