Shared Flashcard Set

Details

Muscles
Back/Thorax/Neck
28
Anatomy
Graduate
01/22/2009

Additional Anatomy Flashcards

 


 

Cards

Term
List the origin(s) of the Trapezius
Definition
Medial third of the superior nuchal line, external occipital protuberance, spinous processes of C7-T12 vertebrae
Term
List the insertion(s) of the Trapezius
Definition
Lateral third of of clavicle, acromion and spine of scapula
Term
What innervates the Trapezius?
Definition
Cranial nerve XI, spinal nerve C3, C4
Term
What is the action of the descending part of the trapezius?
Definition
Elevates the shoulder (not the joint)
Term
What is the action of the ascending part of the trapezius?
Definition
depresses the shoulder (not the joint)
Term
What is the action of the middle part of the trapezius?
Definition
Retracts the scapula
Term
List the origin(s) of the Latissimus Dorsi
Definition
Spinous processes of inferior 6 thoracic vertebrae, thoracolumbar fascia, iliac crest and inferior 3 or 4 ribs
Term
List the insertion(s) of the Latissimus Dorsi
Definition
Floor of interbercular groove of humerus
Term
What innervates the Latissimus Dorsi?
Definition
Thoracodorsal nerve (C6, C7, C8)
Term
What is the main action of the Latissimus Dorsi?
Definition
Extends, adducts, and medially rotates humerus
Term
List the origin(s) of the Pectoralis major
Definition
Clavicular head, sternocostal head, superior six costal cartilages
Term
List the insertion(s) of the Pectoralis major
Definition
Lateral lip of intertubercular groove of humerus
Term
What innervates the Pectoralis Major?
Definition
Lateral and medial pectoral nerves
Term
What is the main action of the Pectoralis major?
Definition
Adducts and medially rotates humerus; draws scapula anteriorly and inferiorly
Term
List the origin(s) of the Pectoralis minor
Definition
3-5th ribs near their costal cartilages
Term
List the insertion(s) of the Pectoralis minor
Definition
Medial border and superior surface of coracoid process of scapula
Term
What innervates the Pectoralis minor?
Definition
Medial pectoral nerve
Term
What is the main action of the Pectoralis minor?
Definition
Stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall
Term
List the origin(s) of the Teres major
Definition
Posterior surface of inferior angle of scapula
Term
List the insertions(s) of the Teres major
Definition
Medial lip of intubercular groove of humerus
Term
What innervates the Teres major
Definition
Lower subscapular nerve
Term
What is the main action of the Teres major?
Definition
Adducts and medially rotates the arm
Term
List the origin(s) of the Deltoid
Definition
Lateral third of clavicle, acromion and spine of scapula
Term
List the insertion(s) of the Deltoid
Definition
Deltoid tuberosity of humerus
Term
What innervates the Deltoid
Definition
Axillary nerve
Term
What is the main action of the anterior part of the deltoid?
Definition
flexes and medially rotates arm
Term
What is the main action of the middle part of the deltoid?
Definition
abducts arm
Term
What is the main action of the posterior part of the deltoid?
Definition
extends and laterally rotates arm
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