Muscles Of Respiration (week 4) Flashcards
Diaphraghm OIAs
O internal surface of ribs 7-12 & their costal cartilage, & internal surface of xiphoid process & anterior bodies of L1-L3
I central tendon of diaphragm (dome)
A Expands the thoracic cavity when abdominal breathing
Internal Intercostals OIAs
O Superior border of 1 Rib & its costal cartilage
I Inferior border & its costal cartilage of rib directly Superior
A Depresses ribs @sternocostal & costospinal joints
External Intercostals OIAs
O Inferior border of one rib
I Superior border of the rib directly Inferior
A Elevates ribs @sternocostal & costospinal joint
Serratus Posterior Superior OIAs
O inferior Ligamentum Nuchae & SPs c7-t3
I superior, external surfaces of ribs 2-5
A elevates ribs 2-5 @sternocostal & costospinal joints
Serratus Posterior Inferior OIAs
O SPs of T11-L3
I Inferior, External surfaces of Ribs 9-12
A Depresses ribs 9-12 @sternocostal & spinocostal joints
Parts of the sternum (3)
Manubrium (superiorly)
Body
Xiphoid Process (inferiorly)
2 parts of rib cage
Costal cartilage & costals
(Cartilage attaches costals to sternum)
“True Ribs”
Pairs 1-7 attach directly to sternum via their own costal cartilage
“False Ribs”
Pairs 8-12, attach indirectly to sternum via shared costal cartilage or not at all (floating)
“Floating Ribs”
Do not attach to sternum at all; precaution/endangerment location bc unsupported nature & proximity to kidneys
Joint movements of costals & joint type
Elevation & Depression @sternocostal & costospinal joints
Plane/Gliding
