Bones & Landmarks of the Humerus

Question 1

The long bone in the upper arm.

Answer 1

Humerus

Question 2

The smooth, spherical-like, proximal end of the humerus that is covered with articular cartilage and articulates with the glenoid fossa of the scapula.

Answer 2

Head of Humerus

Question 3

The short, constricted part of the humerus that connects the head and body of the humerus. It separates the head from the greater and lesser tubercles.

Answer 3

Anatomical Neck of Humerus

Question 4

The short, constricted part found at the proximal end of the body of the humerus and located distal to the greater and lesser tubercles. A weak area that is a common site for fractures.

Answer 4

Surgical Neck of Humerus

Question 5

The large eminence found on the lateral aspect of the proximal end of the humerus. It projects laterally from the junction between the anatomical neck and body of the humerus.

Answer 5

Greater Tubercle

Question 6

The small eminence found on the anterior aspect of the proximal end of the humerus. It projects anteriorly from the junction between the anatomical neck and body of the humerus.

Answer 6

Lesser Tubercle

Question 7

The greater tubercle is palpable when the shoulder is _________ rotated. The lesser tubercle is palpable when the shoulder is __________ rotated.

Answer 7

Internally
Externally

Question 8

The vertical, longitudinal depression found on the anterolateral aspect of the proximal end of the humerus between the greater and lesser tubercles.

Answer 8

Bicipital Groove (aka. Intertubercular Groove, Intertubercular Sulcus)

Question 9

What travels through the bicipital groove?

Answer 9

Long Head Tendon of Biceps Brachii

Question 10

The rough, triangular prominence found at the middle third of the anterolateral surface of the humerus.

Answer 10

Deltoid Tuberosity

Question 11

The sharp, prominent margin located along the lateral aspect of the distal end of the body of the humerus.

Answer 11

Lateral Supracondylar Ridge of Humerus

Question 12

The projection found at the distal end of the lateral supracondylar ridge.

Answer 12

Lateral Epicondyle of Humerus

Question 13

The small, shallow depression found superior to the capitulum of the humerus. It accommodates the head of the radius during elbow flexion.

Answer 13

Radial Fossa

Question 14

The small depression found superior to the trochlea of the humerus. It accommodates the coronoid process of the ulna during elbow flexion.

Answer 14

Coronoid Fossa

Question 15

The smooth, convex projection found on the inferolateral aspect of the condyle of the humerus. It articulates with the head of the radius.

Answer 15

Capitulum

Question 16

The smooth, school-shaped projection found on the inferomedial aspect of the condyle of the humerus. It articulates with the trochlear notch of the ulna.

Answer 16

Trochlea

Question 17

The subcutaneous projection found at the distal end of the medial supracondylar ridge.

Answer 17

Medial Epicondyle of Humerus

Question 18

The sharp, prominent margin located along the medial aspect of the distal end of the body of the humerus.

Answer 18

Medial Supracondylar Ridge of Humerus

Question 19

The shallow, oblique depression found along the posterior surface of the humerus.

Answer 19

Radial Groove (aka. Spiral Groove)

Question 20

What structure travels through the radial groove of the humerus?

Answer 20

Radial Nerve

Question 21

The large, deep depression found along the posterior aspect of the condyle of the humerus. It accommodates the olecranon of the ulna during elbow extension.

Answer 21

Olecranon Fossa

Question 22

The shallow depression found along the posterior surface of the medial epicondyle of the humerus. The _____ _____ travels through it.

Answer 22

Groove for Ulnar Nerve
Ulnar Nerve