A manual of human physiology, including histology and microscopical anatomy, with special reference to the requirements of practical medicine . y occupythe lung-space. Much less blood is driven out of the left heart, so thatthe pulse may disappear. Hence, the heart is distended with blood,and the lungs are congested, while the aortic system contains a smallamount of blood—, the systemic circulation is comparatively empty,while the heart and the pulmonary vessels are engorged with blood. In normal respiration, the air in the lungs during inspiration isunder slight pressure, while during exp
A manual of human physiology, including histology and microscopical anatomy, with special reference to the requirements of practical medicine . y occupythe lung-space. Much less blood is driven out of the left heart, so thatthe pulse may disappear. Hence, the heart is distended with blood,and the lungs are congested, while the aortic system contains a smallamount of blood—, the systemic circulation is comparatively empty,while the heart and the pulmonary vessels are engorged with blood. In normal respiration, the air in the lungs during inspiration isunder slight pressure, while during expiration the pressure is higher,so that these conditions favour the circulation; inspiration favours thesupply of blood (and lymph) through the vena? cavae, and favours theoccurrence of diastole. In operations where the axillary or jugularvein is cut, air may be sucked into the circulation during inspiration,and cause death. Expiration favours the flow of blood in the aortaand its branches, and aids the systolic emptying of the heart. Thearrangement of the valves of the heart causes the blood to move in adefinite direction through it. a.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectphysiology, bookyear1
