Muscles name/ origin and insertion

Front

What is the primary function of the pectoralis major muscle?

Back

Adduction and flexion of the arm/shoulder.

Front

Where does the latissimus dorsi muscle originate?

Back

Lumbar/sacral vertebrae, thoracic vertebrae, and ribs.

Front

What happens to a muscle when it is not used for an extended period?

Back

It undergoes atrophy.

Front

Which muscle is responsible for dorsiflexion of the foot?

Back

Tibialis Anterior.

Front

What is the function of the sartorius muscle?

Back

It wraps around the front of the lower leg, pulling the knee upward and outward.

Front

What is the origin of the gastrocnemius muscle?

Back

The femur.

Front

What is the insertion point of the deltoid muscle?

Back

The deltoid tuberosity of the humerus.

Front

What is the primary action of the biceps brachii muscle?

Back

Flexion of the elbow and supination of the forearm.

Front

What muscle is located on the back of the upper arm?

Back

Triceps brachii.

Front

What is the role of the rectus femoris muscle?

Back

It extends the knee and flexes the hip.