P-DAT 9 Hand And Upper Limb Joints
- 1.
Name two muscles that attach at the tagged structure:
- A.
Flexor carpi ulnaris, abductor digiti minimi
- B.
Palmaris longus, abductor digiti minimi
- C.
Flexor carpi radialis, opponens digiti minimi
- D.
Flexor carpi radialis, extensor digiti minimi
- E.
Extensor carpi ulnaris, extensor digiti minimi
Correct Answer
A. Flexor carpi ulnaris, abductor digiti minimiExplanation
The two muscles that attach at the tagged structure are the Flexor carpi ulnaris and the abductor digiti minimi.Rate this question:
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- 2.
Identify the tagged structure:
- A.
Deep branch of radial nerve
- B.
Superficial branch of radial artery
- C.
Superficial palmer arch
- D.
Recurrent branch of median nerve
- E.
Superficial branch of radial nerve
Correct Answer
D. Recurrent branch of median nerveExplanation
The tagged structure in this list is the "Recurrent branch of median nerve".Rate this question:
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- 3.
A patient has suffered a stab wound at the tagged area. As a result of damage of the underlying neurovascular structures, the patient will most likely have difficulty performing which of the following movements?
- A.
Abducting the thumb
- B.
Flexing digit III-IV metacarpophalangeal joint
- C.
Flexing the thumb
- D.
Flexing digit III-IV distal interphalangeal joint
- E.
Opposing the thumb
Correct Answer
B. Flexing digit III-IV metacarpophalangeal jointExplanation
The correct answer is flexing digit III-IV metacarpophalangeal joint. This is because the metacarpophalangeal joint is responsible for flexing the fingers, and damage to the neurovascular structures underlying this joint would result in difficulty performing this movement. The other movements listed, such as abducting the thumb, flexing the thumb, flexing digit III-IV distal interphalangeal joint, and opposing the thumb, are not directly affected by damage to the neurovascular structures underlying the metacarpophalangeal joint.Rate this question:
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- 4.
The hand of the patient in Question 3 is most likely to be diagnosed with the following condition:
- A.
Hand of Benediction deformity
- B.
Claw Hand deformity
- C.
Wrist Drop deformity
- D.
Ape Hand deformity
- E.
Dupuytren contracture
Correct Answer
B. Claw Hand deformityExplanation
The hand of the patient in Question 3 is most likely to be diagnosed with Claw Hand deformity. This condition is characterized by the inability to fully extend the fingers due to a weakness or paralysis of the muscles that control finger extension. This results in a claw-like appearance of the hand, with the fingers flexed at the joints closest to the fingertips and extended at the joints closest to the palm. This deformity can be caused by nerve damage, such as in conditions like ulnar nerve palsy or radial nerve palsy.Rate this question:
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- 5.
Identify the tagged structure:
- A.
Flexor pollicis longus tendon
- B.
Median nerve
- C.
Extensor indicis tendon
- D.
Ulnar nerve
- E.
Flexor pollicis brevis tendon
Correct Answer
A. Flexor pollicis longus tendonExplanation
The correct answer is the Flexor pollicis longus tendon. The other options listed are different structures or nerves that are not related to the Flexor pollicis longus tendon.Rate this question:
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- 6.
Identify the tagged structure:
- A.
Superior glenohumeral ligament
- B.
Tendon, long head of biceps brachii muscle
- C.
Middle glenohumeral ligament
- D.
Coracoacromial ligament
- E.
Inferior glenohumeral ligament
Correct Answer
C. Middle glenohumeral ligament -
- 7.
The marked area on the tagged bone is held in contact with the radial notch of ulna by what structure?
- A.
Radial collateral ligament
- B.
Biceps brachii tendon
- C.
Ulnar collateral ligament
- D.
Bicipital aponeurosis
- E.
Anular ligament of radius
Correct Answer
E. Anular ligament of radiusExplanation
The correct answer is the Anular ligament of radius. The anular ligament of radius is a strong band of fibrous tissue that encircles the head of the radius, holding it in place against the radial notch of the ulna. This ligament allows for smooth rotation of the radius during pronation and supination of the forearm.Rate this question:
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- 8.
The proximal attachment of the tagged structure is the ______ of scapula.
- A.
Infraglenoid tubercle
- B.
Coracoid process
- C.
Glenoid labrum
- D.
Supraglenoid tubercle
- E.
Acromial process
Correct Answer
D. Supraglenoid tubercleExplanation
The proximal attachment of the tagged structure refers to the point where the structure is attached to the scapula. In this case, the correct answer is the supraglenoid tubercle, which is a small bony projection located above the glenoid cavity of the scapula. This tubercle serves as the attachment site for the long head of the biceps brachii muscle, which plays a role in shoulder and arm movements.Rate this question:
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- 9.
Identify the type of synovial joint that is represented by the tagged articular area.
- A.
Plane
- B.
Condylar
- C.
Saddle
- D.
Pivot
- E.
Hinge
Correct Answer
C. SaddleExplanation
The correct answer is "Saddle" because a saddle joint is a type of synovial joint in which the articular surfaces are shaped like a saddle. This type of joint allows for movement in two planes, making it highly mobile and flexible. The articular area represented in the question is likely shaped like a saddle, which is characteristic of a saddle joint.Rate this question:
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.JPG "Identify the tagged structure:")
.JPG "A patient has suffered a stab wound at the tagged area. As a result of damage of the underlying neurovascular structures, the patient will most likely have difficulty performing which of the following movements?")
.JPG "The proximal attachment of the tagged structure is the ______ of scapula.")
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