Muscle Exam 2

Front

What is the function of the Zygomaticus muscle?

Back

The Zygomaticus muscle is responsible for elevating the corners of the mouth, contributing to smiling.

Front

Identify the primary action of the Triceps brachii muscle.

Back

The Triceps brachii muscle primarily extends the elbow joint.

Front

What is the anatomical location of the Sternocleidomastoid muscle?

Back

The Sternocleidomastoid muscle is located in the neck, running from the sternum and clavicle to the mastoid process of the temporal bone.

Front

What role does the Gastrocnemius muscle play in movement?

Back

The Gastrocnemius muscle is involved in plantar flexion of the foot and flexion of the knee.

Front

What is the function of the Vastus lateralis muscle?

Back

The Vastus lateralis muscle extends the knee and is part of the quadriceps group.

Front

Define the term 'muscle origin'.

Back

The muscle origin is the fixed attachment point of a muscle, typically located on the bone that does not move during contraction.

Front

Define the term 'muscle insertion'.

Back

The muscle insertion is the movable attachment point of a muscle, typically located on the bone that moves during contraction.

Front

What is the role of the Deltoid muscle?

Back

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

Front

Explain the significance of the Teres major muscle.

Back

The Teres major muscle assists in the adduction and medial rotation of the arm.

Front

What is the primary function of the Masseter muscle?

Back

The Masseter muscle is primarily responsible for elevating the mandible, facilitating chewing.