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Ribs and Sternum - Anatomy & Physiology (view source)
Revision as of 15:35, 25 July 2008
, 15:35, 25 July 2008→Thoracic Musculature
***Neutral position (between full inspiration and full expiration): 6th rib behind the '''olecranon'''
***Neutral position (between full inspiration and full expiration): 6th rib behind the '''olecranon'''
**Attaches via muscular periphery to the costal arch
**Attaches via muscular periphery to the costal arch
**Three openings:
***'''Aortic hilus''' conveying the aorta, azygous vien, and thoracic duct
***'''Oesophageal hiatus''' conveying the oesophagus, vagal trunks and supplying vessels
***'''Caval foramen''' withing central tendon conveying '''caudal vena cava'''
**Innervated by the '''phrenic nerve''', which arises from the caudal cervical nerves (C5-C7)
*''Intercostal muscles''
*''Intercostal muscles''
**External fibers run caudoventrally and internal fibers run cranioventrally
**External fibers run caudoventrally and internal fibers run cranioventrally
*''Rectus thoracis'' covers the ends of the first four ribs in continuation of the ''rectus abdominus''
*''Rectus thoracis'' covers the ends of the first four ribs in continuation of the ''rectus abdominus''
*''Serratus dorsalis'' overlies the dorsal aspect of the ribs
*''Serratus dorsalis'' overlies the dorsal aspect of the ribs
*Innervation of these muscles is supplied by the '''Intercostal nerves''', which are ventral branches of the thoracic spinal nerves
=Abdominal Musculature=
=Abdominal Musculature=