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Origin insert innerv action.
origins insert innerv action.
32
Anatomy
Professional
08/04/2008

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Term
What is the origin of the pectoralis major m.?
Definition

Clavicular Head: medial half of clavicle;

sternocostal head: sternum, costal cartilages, aponeurosis of external abdominis oblique muscle.

Term
What is the origin of the pectoralis minor m.?
Definition
Anterior aspect of 3rd-5th ribs.
Term
What is the origin of the subclavius m.?
Definition
Junction of 1st rib and costal cartilages.
Term
What spinal nerves innervate the pectoralis minor m.?
Definition

C8-T1 (Medial pectoral n.)

Term
What is the insertion of the subclavius m.?
Definition

Inferior surface of clavicle.

Term

What is the insertion of the pectoralis major m.?

Definition
Lateral lip of the intertubercular groove of the humerus.
Term
What is the insertion of the pectoralis minor m.?
Definition

Coracoid process of scapula.

Term
What spinal nerves innervate the subclavius m.?
Definition
C5-C6 (Nerve to subclavius)
Term
What is the action of the pectoralis major m.?
Definition

Flexes, ADducts, and medially rotates the arm.

Term
What is the action of the subclavius m.?
Definition

Draws clavicle inferiorly and anteriorly.

Term
What is the action of the pectoralis minor m.?
Definition
Draws scapula inferiorly and anteriorly; (elevates ribs.)
Term
What spinal nerves innervate the pectoralis major m.?
Definition

C5, C6, C7 (lateral pectoral n.)

 

C8-T1 (medial pectoral n.)

Term
What innervates the mammary glands?
Definition
intercostal nn. (esp. 4th-6th)
Term
What is the origin of the Trapezius m?
Definition
Superior nuchal line, external occipital protuberance, ligamentum nuchae, 7th cervical and all thoracic spinous processes.
Term
What is the origin of the latissimus dorsi?
Definition
Spinous processes of all vertebrae below T6, thoracolumbar fascia, crest of ilium and lower 3 or 4 ribs.
Term
What is the origin of Levator Scapulae?
Definition
Transverse processes of C1-C4
Term

What is the origin of Rhomboid Minor?

Definition
Spinous processes of C7-T1
Term

What is the origin of the Rhomboid Major?

Definition
Spinous processes of T2-T5
Term
What is the origin of the serratus posterior superior?
Definition
Ligamentum nuchae, C7-T3 spinous processes.
Term
What is the origin of the serratus posterior inferior?
Definition
T11-L2 spinous processes.
Term
What is the insertion of the Trapezius?
Definition
spine of scapula, acromion, and lateral 1/3 of posterior border of clavicle
Term
What is the insertion of the latissimus dorsi?
Definition
floor of the intertubercular groove of the humerus
Term
What is the insertion of the levator scapulae?
Definition
medial border of scapula superior to the spine of the scapula
Term
What is the insertion of the rhomboid minor?
Definition
the root of the spine of the scapula
Term
What is the insertion of the rhomboid major?
Definition
the medial surface of the scapula inferior to the spine of the scapula
Term
What is the insertion, action and innervation of the serratus posterior superior?
Definition
2nd to 5th ribs, inspiratory muscle of respiration, intercostal nerves T2-T5
Term
What is the insertion, action, and innervation of serratus posterior inferior?
Definition
9th-12th ribs, inspiratory muscle of respiration, intercostal nn T9-T12
Term
What is the action and innervation of the Trapezius?
Definition
Adducts and rotates scapula, upper part elevates scapula, lower part depresses scapula; spinal accessory n. (CN XI), twigs from C3-C4
Term
What is the action and innervation of the latissimus dorsi?
Definition

extends, adducts, and rotates arm medially; thoracodorsal n, C6-C8

Term
What is the action and innervation of the levator scapulae?
Definition
elevates scapula and inclines head laterally; Dorsal scapular n. C5
Term
What is the action and innervation of the rhomboid minor?
Definition
adducts scapula; dorsal scapular n. C5
Term
what is the action and innervation of the rhomboid major?
Definition
adducts scapula; dorsal scapular n.
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