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The Muscular part of the diaphragm is peripheral, surrounding the central Tendinous area. The muscular part has sections which arise from the xiphoid Process of the [[Ribs and Sternum - Anatomy & Physiology|Sternum]], [[Spinal Column - Anatomy & Physiology|vertebral Column]] and caudal [[Ribs and Sternum - Anatomy & Physiology|ribs]].
 
The Muscular part of the diaphragm is peripheral, surrounding the central Tendinous area. The muscular part has sections which arise from the xiphoid Process of the [[Ribs and Sternum - Anatomy & Physiology|Sternum]], [[Spinal Column - Anatomy & Physiology|vertebral Column]] and caudal [[Ribs and Sternum - Anatomy & Physiology|ribs]].
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==Openings within the Diaphragm==
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==Openings within the diaphragm==
    
The Diaphragm has three openings: '''Aortic Hiatus''' - the most Dorsal opening, contains the Aorta, Azygous Vein and Thoracic Duct; '''Oesophageal Hiatus''' - contains the oesophagus, dorsal and ventral Vagal trunks and '''Caval Foramen''' - lies within the central tendoninous region of the diaphragm, and contains the Caudal Vena Cava. This opening does not allow movement;the diaphragm is fused with the vessel wall.
 
The Diaphragm has three openings: '''Aortic Hiatus''' - the most Dorsal opening, contains the Aorta, Azygous Vein and Thoracic Duct; '''Oesophageal Hiatus''' - contains the oesophagus, dorsal and ventral Vagal trunks and '''Caval Foramen''' - lies within the central tendoninous region of the diaphragm, and contains the Caudal Vena Cava. This opening does not allow movement;the diaphragm is fused with the vessel wall.
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The Diaphragm is supplied by the '''phrenic nerve'''.
 
The Diaphragm is supplied by the '''phrenic nerve'''.
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==Species Differences==
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==Species differences==
    
Because of the shorter thorax, the diaphragm is steeper in the '''ruminant''' compared to the '''horse'''. '''Avian''' species do not possess a diaphragm. Air moves in and out of their lungs via [[Avian Respiration - Anatomy & Physiology#Air Sacs|Air Sacs]].
 
Because of the shorter thorax, the diaphragm is steeper in the '''ruminant''' compared to the '''horse'''. '''Avian''' species do not possess a diaphragm. Air moves in and out of their lungs via [[Avian Respiration - Anatomy & Physiology#Air Sacs|Air Sacs]].
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[[Category:Musculoskeletal System]][[Category:Respiratory System - Anatomy & Physiology]]
 
[[Category:Musculoskeletal System]][[Category:Respiratory System - Anatomy & Physiology]]
[[Category:To Do - AimeeHicks]]
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[[Category:To Do - AimeeHicks]][[Category:To Do - Review]]
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