| |
The internal intercostal muscles draw the ribs down and inward
The wall of the abdomen contracts pushing the stomach and liver upward.
Under these conditions, an average adult male can flush his lungs with about 4 liters of air at each breath.
Keywords: medulla, dorsal respiratory group, ventral respiratory group, inspiration expiration, intercostal muscles, diaphragm, intercostal nerve, phrenic nerve, oxygen, carbon dioxide, chemoreceptors, aortic bodies, carotid bodies, ...
The Intercostales (Intercostal muscles) (Fig. 411) are two thin planes of muscular and tendinous fibers occupying each of the intercostal spaces.
In the mammal, a large muscle, the diaphragm (in addition to the internal intercostal muscles), drive ventilation by periodically altering the intra-thoracic volume and pressure; by increasing volume and thus decreasing pressure, ...
As we said, frogs swallow air. The muscles of the rib cage (intercostal muscles) aid in ventilation of the lungs in reptiles, birds and mammals and in the mammals the muscular diaphragm is very important.
Ribs are bones that protect the major organs of vertebrates, and form a cage which itself is connected to the vertebral column and the sternum. The ribs are also attached to the intercostal muscles which are associated with breathing.
 See also: Muscle, Trans, Human, Membranes, Respiration
  
|
RSS
