AP Muscle Anatomy

Front

What is the function of the Orbicularis Oris muscle?

Back

The Orbicularis Oris muscle is responsible for movements of the mouth, including closing and puckering the lips.

Front

What are the primary muscles that make up the Quadriceps group?

Back

The Quadriceps group consists of four muscles: Rectus Femoris, Vastus Lateralis, Vastus Medialis, and Vastus Intermedius, which are primarily responsible for extending the knee.

Front

What is the primary function of the Pectoral muscles?

Back

The Pectoral muscles, primarily the Pectoralis Major and Minor, are responsible for movements of the shoulder, including flexion, adduction, and internal rotation.

Front

What is the role of the Flexor Carpi Ulnaris muscle?

Back

The Flexor Carpi Ulnaris muscle is responsible for flexing and adducting the wrist.

Front

What is the anatomical significance of the Sternocleidomastoid muscle?

Back

The Sternocleidomastoid muscle is significant for its role in head rotation and flexion, as well as its contribution to the movement of the neck.

Front

What are the main actions of the Deltoid muscle?

Back

The Deltoid muscle is responsible for shoulder abduction, flexion, and extension.

Front

What is the origin and insertion of the Biceps Brachii?

Back

The Biceps Brachii originates from the scapula and inserts into the radial tuberosity, allowing for elbow flexion and forearm supination.

Front

What is the primary function of the Trapezius muscle?

Back

The Trapezius muscle is responsible for moving, rotating, and stabilizing the shoulder blade (scapula) and extending the neck.

Front

What is the role of the Gastrocnemius muscle in movement?

Back

The Gastrocnemius muscle is primarily responsible for plantar flexion of the foot and flexion of the knee.

Front

What is the difference between intrinsic and extrinsic muscles of the hand?

Back

Intrinsic muscles originate and insert within the hand, controlling fine motor movements, while extrinsic muscles originate in the forearm and control gross movements of the hand.