Human Anatomy and Physiology : Identifying Bones of the Upper Extremities

Study concepts, example questions & explanations for Human Anatomy and Physiology

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Example Questions

Example Question #11 : Identifying Bones Of The Upper Extremities

Which of the following is a feature of the ulna?

Possible Answers:

Deltoid tuberosity

Olecranon

Trochlea

Coracoid process

Correct answer:

Olecranon

Explanation:

The olecranon is a feature of the ulna. It is commonly known as the elbow. The coracoid process can be found on the scapula and both the deltoid tuberosity and trochlea can be found on the humerus.

Example Question #11 : Identifying Bones Of The Upper Extremities

Which bone houses the coracoid process?

Possible Answers:

Sternum

Clavicle

Humerus

Scapula

Temporal bone

Correct answer:

Scapula

Explanation:

The coracoid process is a projection on the scapula that serves as an attachment site for ligaments which help to stabilize the shoulder. It is located proximally to the articulation of the humerus and scapula. The head of the humerus is smooth and round to fit into the glenoid cavity of the scapula. It has no sites for attachment. The humerus is the long bone of the upper arm. It is the head of the humerus that interacts with the ligaments attaching to the coracoid process. The clavicle, also known as the collar bone, articulates with another projection from the scapula called the acromion. It is posterior to the coracoid process.

Example Question #12 : Identifying Bones Of The Upper Extremities

Name the the sesamoid bone of the wrist.

Possible Answers:

Lunate

Ulna

Scaphoid

Hamate

Pisiform

Correct answer:

Pisiform

Explanation:

A sesamoid bone is one that lies within a tendon. The tendon slides across the bone to reduce friction, increase the force the tendon can pull with, and/or prevent the tendon from flattening when it is taut. There are several sesamoid bones in the body, but only one in the wrist. It is called the pisiform and it lies within the tendon of the flexor carpi ulnaris muscle.

Example Question #11 : Identifying Bones Of The Upper Extremities

What is the longer and thinner bone of the forearm?

Possible Answers:

The radius

The ulna

The olecranon

The fibula

Correct answer:

The ulna

Explanation:

The ulna is the longer and thinner bone in the forearm. The radius is the shorter, thicker bone of the forearm. The fibula is the long thin bone of the leg. The olecranon is a bony eminence of the ulna, that is palpable as the elbow.

Example Question #12 : Identifying Bones Of The Upper Extremities

Which of the following is not a bone in the wrist?

Possible Answers:

Hamate

Talus

Triquetrum

Scaphoid

Trapezium

Correct answer:

Talus

Explanation:

The wrist is composed of eight bones. The scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, and hamate. The talus is a bone in the ankle.

Example Question #13 : Identifying Bones Of The Upper Extremities

What part of the humerus can be felt through the skin on the side of the elbow closest to the trunk and is sometimes referred to as the funny bone?

Possible Answers:

Lateral epicondyle

Medial condyle

Medial tubercle

Medial epicondyle

Lateral condyle

Correct answer:

Medial epicondyle

Explanation:

Condyles articulate with bones (such as the lateral and medial condyles of the femur) while epicondyles serve as attachment points for ligaments and muscles. The funny bone is the medial epicondyle. Lateral refers to something farther from the mid line. The ulnar nerve passes between the medial epicondyle and the olecranon process of the ulna, so it can easily be overstimulated by being hit on one of these bony prominences.

Example Question #14 : Identifying Bones Of The Upper Extremities

Which of the following bones can be found in the shoulder girdle?

Possible Answers:

Femur

Ulna

Sternum

Scapula

Humerus

Correct answer:

Scapula

Explanation:

Anatomically speaking, the shoulder girdle in humans consists of two bones: the scapula and the clavicle. Of the answer choices listed, scapula is the only one that is correct.

Example Question #15 : Identifying Bones Of The Upper Extremities

Which bones of the upper body have an interosseous membrane between them?

Possible Answers:

Tibia and fibula

Clavicle and scapula

Ulna and radius

Sternum and ribs

Ribs

Correct answer:

Ulna and radius

Explanation:

Interosseous membranes are thin flat stretches of fibrous tissue that stretch between the ulna and radius of the forearm and also between the tibia and fibula of the lower limbs. They serve to separate structures such as the muscles on the anterior and posterior sides of the arm, absorb impact, and maintain integrity of the joint during movements.

Example Question #16 : Identifying Bones Of The Upper Extremities

What is the anatomical name for the point of your elbow?

Possible Answers:

Medial condyle of the ulna

Olecranon of the radius

Lateral condyle of the ulna

Olecranon of the ulna

Correct answer:

Olecranon of the ulna

Explanation:

Of the two bones in the forearm, the point of the elbow is located on the ulna. This eliminates the answer choice that says the olecranon of the radius because that is not an actual structure. The medial and lateral condyles are located on either side of the bone, meaning the correct answer is the olecranon of the ulna.

Example Question #17 : Identifying Bones Of The Upper Extremities

Which of the following carpal bones articulates with the proximal end of the first metacarpal?

Possible Answers:

Trapezium

Scaphoid

Hamate

Trapezoid

Triquetrum

Correct answer:

Trapezium

Explanation:

Distal row of carpals from lateral to medial: trapezium, trapezoid, capitate, hamate. Proximal row of carpals from lateral to medial: scaphoid, lunate, triquetrum, pisiform.

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