Muscle Anatomy Quiz

The Extensor Pollicis Brevis muscle originates on the lower third of the radius and attaches to the thumb's first bone (proximal phalanx).

The Abductor Pollicis Longus muscle originates on the upper half of the radius, near the thumb side, and attaches to the thumb's first bone (proximal phalanx) and the extensor hood.

This ligament connects the scaphoid and lunate bones in the wrist, stabilizing the wrist joint.

The knee reflex test involves tapping the patellar tendon, which should cause the lower leg to extend. Nerve roots L2, L3, and L4 are responsible for this reflex.

Hyperflexion is a special test used to assess nerve or muscle function. It involves bending the knee as far as possible, which can cause the knee to suddenly kick out forcefully.

Absence of the knee reflex, indicating a potential neurological problem.

A test using sharp and dull objects to assess a patient's ability to perceive different sensations. Used to evaluate sensory function of specific spinal nerves.

A system for mapping the areas of skin supplied by specific spinal nerves. Each dermatome corresponds to a specific spinal nerve root.

A scoring system used to quantify the strength of reflexes.

A reflex that is abnormally brisk or exaggerated, indicating potential nerve damage or disruption.

The ACL connects the femur (thigh bone) to the tibia (shin bone) and prevents the tibia from sliding forward under the femur.

It originates from the inside of your femur, specifically at the medial epicondyle.

The ACL inserts at the middle of the intracondylar area of the tibia.

The Posterior Drawer test is commonly used to check for ACL tears. It involves pulling the tibia backward. A positive test means there's excess movement, suggesting an ACL tear.

The PCL connects the femur (thigh bone) to the tibia (shin bone) and prevents the tibia from sliding backwards under the femur.

A test used to diagnose carpal tunnel syndrome by assessing how well the wrist bends back (extension).

A test used to diagnose De Quervain's disease by bending the thumb across the palm and then tilting the wrist.

This test assesses the stability of the scaphoid bone in the wrist.

A condition affecting the tendons on the thumb side of the wrist.

An injury to the ligament connecting the scaphoid bone to other wrist bones.