Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
External intercostals
|
elevates ribs
increases volume of thoracic cavity inspiratory muscle Origin inferior border of each rib Insertion superior border of lower rib |
|
|
Internal intercostals
|
depresses ribs
reduces thoracic volume expiratory muscle Origin superior border of each rib Insertion inferior border of rib above origin |
|
|
Transversus Thoracis
|
depresses ribs
reduces thoracic volume for forceful expiration Origin inner surface of inferior part of sternum and adjacent costal cartilages Insertion cartilage of ribs 2 to 6 |
|
|
Diaphragm
|
increases volume of thoracic cavity
decreases volume of abdominopelvic cavity inspiratory muscle Origin xiphoid process cartilages of ribs 4 to 10 body of upper 2 to 3 lumbar vertebrae Insertion fibers converge to central tendinous sheet |
|
|
Trapezius
|
elevates, depresses, adducts, and rotates scapula
elevates clavicle extends head and neck Origin long origin from occipital bone ligamentum nuchae spinal processes of C7 and all thoracic vertebrae Insertion V-shaped insertion from lateral one third of clavicle, acromion, and spine of scapula |
|
|
Rhomboid major
|
adducts, elevates, and rotates scapula
helps stabilize scapula Origin spinous processes of T2-T5 Insertion medial border of scapula from spine to inferior angle |
|
|
Rhomboid minor
|
adducts, elevates, and rotates scapula
stabilizes scapula Origin spinous processes of C7 and T1 inferior part of ligamentum nuchae Insertion medial border of scapula near spine |
|
|
Levator scapulae
|
Unilaterally: elevates and adducts scapula
rotates scapula laterally flexes neck to same side rotates neck to same side Bilaterally: extends neck Origin transverse processes of C1-C4 Insertion superior part of medial border of scapula |
|
|
Serratus Anterior
|
protracts, abducts, rotates the inferior angle laterally and glenoid cavity of scapula cranially.
stabilizes scapula depresses and elevates scapula displaces thorax posteriorly Origin anterior and superior aspect of ribs 1 to 9 Insertion anterior aspect of the medial border of scapula |
|
|
Pectoralis Minor
|
protracts, depresses, and laterally rotates scapula
Origin anterior aspect of ribs 3 to 5 Insertion coracoid process of scapula |
|
|
Subclavius
|
depresses and protracts shoulderstabilizes clavicle
Originjunction of first rib with costal cartilage Insertionmiddle of clavicle, inferior surface |
