What is the action of the Pectoantebrachialis?
Muscles of the Neck, Shoulder, Chest and Abdomen
| Muscle Name | Origin | Action |
|---|---|---|
| Pectoantebrachialis | Cranial end of sternum | Abducts forearm |
| Pectoralis major | Clavicle Sternum Ribs | Adducts arm Flexes arm Rotates arm |
| Pectoralis minor | Ribs | Stabilizes scapula Elevates ribs |
| Rectus abdominis | Pubis | Compresses andomen |
What does the Clavotrapezius do?
The clavotrapezius arises from the back of the skull and middorsal line of the neck and inserts on the clavicle. Its action is to extend the humerus in a forward direction.
What is the insertion of Pectoantebrachialis?
pectoantebrachialis (cat only) origin: lateral surface of manubrium. insertion: forearm.
What muscle depresses the mandible in cat?
The lateral pterygoid muscle depresses the mandible and opens the mouth when assisted by the anterior belly of the digastric muscle and the mylohyoid muscle.
What is the action of the gluteus maximus in the cat?
It acts as an abductor of the thigh. Gluteus Maximus – In the cat this is a relatively small muscle, while in humans it forms the primary tissue of the buttocks. Its fibers run laterally from sacral and caudal vertebrae and insert upon the proximal femur. It abducts the thigh.
What is the function of the humerus in a cat?
The humerus is an important bone for transfer of weight and for propelling the body forward; by its position, it also provides a protective function for the thorax. The humeral head articulates proximally with the scapula, and the humeral condyle articulates distally with the radius and ulna.
What is the action of serratus ventralis?
Action: pulls scapula forward (anterior) and laterally (abduction), rotates scapula upward.
What is the action of the sternocleidomastoid muscle?
Function. Rotation of the head to the opposite side or obliquely rotate the head. It also flexes the neck. When acting together it flexes the neck and extends the head.
What is the action of the Pectoantebrachialis muscle?
Pectoantebrachialis muscle is just one-half-inch wide and is the most superficial in the pectoral muscles. Its origin is the manubrium of the sternum, and its insertion is in a flat tendon on the fascia of the proximal end of the ulna. Its action is to draw the arm towards the chest.
What is the major action of the pectoral muscles in cats?
The major action of these muscles is adduction of the forelimb (i.e. the front leg is drawn toward the midline). There are four subdivisions of the pectoral group in the cat.
What is the human equivalent of the pectoantebrachialis?
Pectoantebrachialis muscle is just one-half-inch wide and is the most superficial in the pectoral muscles. Its origin is the manubrium of the sternum, and its insertion is in a flat tendon on the fascia of the proximal end of the ulna. Its action is to draw the arm towards the chest. There is no human equivalent.
What is the pectoral group in a cat?
The chest muscles form a large, triangular mass of muscles collectively called the pectoral group. These muscles originate on the sternum and insert on or near the humerus. The major action of these muscles is adduction of the forelimb (i.e. the front leg is drawn toward the midline). There are four subdivisions of the pectoral group in the cat.