Muscle Origin, Insertion, Action - Upper Adv

Front

What is the origin of the sternocleidomastoid muscle?

Back

The sternocleidomastoid muscle originates from the manubrium of the sternum and the medial portion of the clavicle.

Front

What is the insertion of the sternocleidomastoid muscle?

Back

The insertion of the sternocleidomastoid muscle is the mastoid process of the temporal bone.

Front

What is the action of the sternocleidomastoid muscle?

Back

The action of the sternocleidomastoid muscle is to rotate the head to the opposite side and flex the neck.

Front

What is the origin of the epicranius muscle?

Back

The epicranius muscle originates from the occipital bone.

Front

What is the action of the orbicularis oris muscle?

Back

The action of the orbicularis oris muscle is to close and protrude the lips.

Front

What is the insertion of the orbicularis oris muscle?

Back

The insertion of the orbicularis oris muscle is at the skin around the lips.

Front

What is the action of the deltoid muscle?

Back

The deltoid muscle flexes the arm at the shoulder, adducts, and medially rotates the arm.

Front

What is the origin of the pectoralis major muscle?

Back

The pectoralis major muscle originates from the clavicle, sternum, and the cartilage of the first six ribs.

Front

What is the insertion of the pectoralis major muscle?

Back

The insertion of the pectoralis major muscle is at the greater tubercle of the humerus.

Front

What is the action of the biceps brachii muscle?

Back

The biceps brachii muscle flexes the elbow and supinates the forearm.