Hand and Arm Bones

Which of the following is an example of a long bone?

• Humerus

• Carpal

• Pisiform

• Sternum

What type of bone is the pisiform classified as?

• Long bone

• Short bone

• Sesamoid bone

• Irregular bone

Which bone is the only bone in the upper arm, stretching from the shoulder to the elbow?

• Humerus

• Femur

• Radius

• Ulna

Which structure of the proximal (upper) region of the humerus fits into the glenoid fossa of the scapula to facilitate multi-directional shoulder motion?

• Head

• Greater tubercle

• Lesser tubercle

• Surgical neck

Which tubercle serves as the attachment site for the subscapularis muscle (rotator cuff)?

• Greater tubercle

• Lesser tubercle

• Intertubercular groove

• Surgical neck

What is the primary function of the greater tubercle of the humerus?

• Houses the tendon of the long head of the biceps

• Attaches three of the four rotator cuff muscles, providing shoulder stability and arm rotation

• Common fracture site in falls

• Attachment site for the subscapularis muscle

Why is the surgical neck of the humerus clinically significant?

• It is the site where the rotator cuff muscles attach

• It is a common fracture site with risk to the axillary nerve and posterior circumflex humeral artery

• It houses the tendon of the long head of the biceps

• It fits into the glenoid fossa of the scapula

Which structure houses the radial nerve and profunda brachii artery?

• Deltoid tuberosity

• Radial (Spiral) Groove

• Anatomical neck

• Greater tubercle

A supracondylar fracture in a child requires careful assessment for which of the following reasons?

• It may affect the articulation with the radius.

• It may involve nerve or vessel damage.

• It prevents the arm from extending fully.

• It affects the formation of the elbow hinge.

Which bone is located on the lateral (thumb) side of the forearm, running parallel to the ulna?

• Radius

• Humerus

• Scaphoid

• Lunate