Unit 4-Anatomy-Muscular System-Diagram Review

Front

What is the function of the Platysma muscle?

Back

The Platysma muscle is responsible for depressing the mandible and tensing the skin of the neck.

Front

Define Myosin in the context of muscle anatomy.

Back

Myosin is a type of protein that interacts with actin to facilitate muscle contraction.

Front

What is the role of the Rectus abdominis muscle?

Back

The Rectus abdominis muscle helps flex the vertebral column and compress the abdominal contents.

Front

Describe the Sartorius muscle and its function.

Back

The Sartorius muscle is the longest muscle in the body, aiding in flexion, abduction, and lateral rotation of the hip.

Front

What is the primary function of the Occipitalis muscle?

Back

The Occipitalis muscle helps to retract the scalp and is involved in facial expressions.

Front

Identify the location of the Trapezius muscle.

Back

The Trapezius muscle is located in the upper back and neck, extending from the occipital bone to the lower thoracic vertebrae.

Front

Explain the significance of Actin in muscle contraction.

Back

Actin is a protein that forms thin filaments in muscle fibers and plays a crucial role in muscle contraction by interacting with myosin.

Front

What is the function of the Internal oblique muscle?

Back

The Internal oblique muscle helps in trunk rotation and lateral flexion, as well as compressing the abdominal cavity.

Front

Describe the External oblique muscle and its role.

Back

The External oblique muscle aids in trunk rotation and lateral flexion, and it also helps in compressing the abdominal contents.

Front

What is a Sarcomere?

Back

A Sarcomere is the basic contractile unit of muscle tissue, defined as the segment between two Z lines.