musculo Coracobrachialis

MUSCLE coracobrachialis

SHORT DESCRIPTION

• Longus and flattened.
• In half of their journey he is I is crossed by the musculocutaneous nerve.
• Musculo also called perforated Casserius.

OCUPA

• Located in the upper and medial part of the arm.

ORIGIN

• medial side of the apex of the coracoid process (common tendon with the short head of the biceps).

INSERTION

• anterior surface of the humerus superiorly to the middle and above the medial edge of the bone.

INNERVATION: Nerve Musculocutaneous.

FUNCTION:  previous Displaces and medially arm.

Shoulder muscles

SHOULDER MUSCLES

The shoulder muscles are divided into four groups:

PREVIOUS MUSCLE GROUP: They are arranged in two planes.

Deep

1. subclavius
2. Minor Pectoral Muscle

Superficial

1. Pectoral muscle Mayor

MUSCLE MEDIAL GROUP: C onstituido only by:

1. Musculo Serrato Previous

BACK MUSCLE GROUP: comprising the muscles of the posterior wall of the axilla are in immediate relation to the scapula.

1. subscapularis
2. supraspinatus
3. infraspinatus muscle
4. Teres minor muscle
5. Mayor teres
6. Latissimus dorsi

SIDE MUSCLE GROUP:  C onstituido only by:

1. Deltoid muscle

Pectoral muscle Mayor

MAJOR MUSCLE CHEST

SHORT DESCRIPTION

• Dorsi, flattened and triangular.
• Thin medially and laterally thick.
• It is separated from the deltoid muscle, forming the groove deltopectoral.

OCUPA

• Located on the front and upper chest.
• In front of the pectoralis minor.
• It extends from the chest to the humerus.

ORIGIN: Portion:

• Clavicular: 2/3 medial aspect of the anterior border of the clavicle. (Descending fibers)
• Sternal: corresponding half of the sternum, 5-6 first costal cartilages. 4 and 5 are most important.
• Abdominal: Front of the sheath of the rectus abdominis.

INSERTION

intertubercular anterior lip of the groove, using 2 fascicles:

• Previous: Continuation of clavicular and sternal top of the fibers.
• Rear: Formed by the other parts of the muscle.

These two issues are joined by means of a fascicle.

INNERVATION :  Nerves of the pectoralis major and minor, Brachial Plexus.

FUNCTION

• Adductor and medial rotator arm.
• fixed in the humeral point, raises the thorax. (Raising the whole body).

Minor Pectoral Muscle

Pectoralis MINOR

SHORT DESCRIPTION

• lean, flat and triangular muscle.
• It is covered by the pectoralis major muscle.

OCUPA

• Located below the subclavian muscle. Forming a triangular space with this internal database called clavipectoral space.

ORIGIN

• top edge and side face of the third, fourth and fifth ribs near the costal cartilages.

INSERTION

• anterior medial border of the coracoid process, or the upper face of said process.
• By a flattened tendon.

INNERVATION :  Nerve pectoralis minor, Brachial Plexus

FUNCTION

• fixed point in the ribs, shoulder down the stump.
• fixed point on the scapula, elevates the ribs (acting as inspiring muscle)

Subclavian muscle

MUSCLES SUBCLAVIAN

SHORT DESCRIPTION

• Musculo elongated and fusiform.

OCUPA

• Located below the collarbone.
• It extends obliquely between the first rib and clavicle.

ORIGIN

• upper face of the first costal cartilage and nearest part of the top face of the first rib.
• By means of a cylindrical tendon.

INSERTION

• underside of the clavicle, in an excavation groove called subclavian muscle.

INNERVATION :  Brachial Plexus

FUNCTION

• fixed point on the first rib, clavicle lowered and therefore the shoulder.
• collarbone fixed point, Eleva the first rib (acting as inspiring muscle).

Triangular muscle Sternum

MUSCLES TRIANGULAR breastbone

SHORT DESCRIPTION

• Small muscle belly.

ORIGIN

• In the xiphoid process and on the back side of the sternum.

INSERTION 

• In the inner faces of the costal cartilages 2-6.

INNERVATION :  Intercostal nerves.

FUNCTION

• They are differentiations of internal intercostal muscles.
• They exist only in the intercostal spaces means (4, 5, 6, 7).
• Saltan 2 or 3 ribs.

Supracostales muscles

SUPRACOSTALES MUSCLES

SHORT DESCRIPTION

• They are differentiations of the external intercostal muscles. They can be long or short.

ORIGIN

• At the tip of the transverse process of a vertebra.

INSERTION

• In the externosuperior infradyacente edge of the rib.

INNERVATION :  Intercostal nerves Correspondents.

FUNCTION

• vertebral rotation: If the rib is set.
• Lifting Rib: If the spine is fixed.