P-DAT 9 Hand And Upper Limb Joints

The two muscles that attach at the tagged structure are the Flexor carpi ulnaris and the abductor digiti minimi.

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.

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.

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.

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.

The tagged structure in this list is the "Recurrent branch of median nerve".

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.

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.

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