. True manhood : a manual for young men . Fig. XXXIV. Bronchial tubes ajid air cells in lungs. We here see these little air cells, through whichthis wonderful process of osmosis takes place. Thefirst cut gives them entire. The second shows themlaid open. Venous blood is impregnated with a poisonous gascalled carbonic acid gas. This is upon one side of themembrane, and oxygen is upon the other side. Theyexchange places by osmosis. The former passes upthe bronchial tubes and windpipe and goes out of themouth and nose with the outgoing breath, called expi-ration. It was the presence of the carbon
. True manhood : a manual for young men . Fig. XXXIV. Bronchial tubes ajid air cells in lungs. We here see these little air cells, through whichthis wonderful process of osmosis takes place. Thefirst cut gives them entire. The second shows themlaid open. Venous blood is impregnated with a poisonous gascalled carbonic acid gas. This is upon one side of themembrane, and oxygen is upon the other side. Theyexchange places by osmosis. The former passes upthe bronchial tubes and windpipe and goes out of themouth and nose with the outgoing breath, called expi-ration. It was the presence of the carbonic acid gaswhich gave the purple hue to the blood; oxygennow exchanges that color for a bright scarlet red. Amultitude of cells mostly of a red hue, though a feware white, fairly bound and dance with life, and all TRUE MANHOOD. 131. float in a transparent, colorless liquid, called plasma. With the unassisted eye, blood looks wholly red and we cannot see anything white in it, for the * cells are very small and crowded together. It requires 3,500 of # them to fill an inch of space. Fig. XXXV. .Arterial Blood cclls are entirely mem- blood cells. • braneless, and have no material has here reached a very completestate. The blood coagulates promptly upon ex-posure, showing an improved condition of is consequently better adapted to human needs. Respiratio7t (in-breathing and out-breathing) hasadded a step in the series of changes organizing foodinto its highest capacity. After venous blood has become saturated withoxygen, it receives a new name—arterial blood—andoccupies another part of the tubing—the arteries—as soon as it leaves the lungs. If we would have our blood of excellent quality wemust select good food ; a constant supply of fresh airis equally essential, else muscles, nerves
Size: 1823px × 1371px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookidtruemanhoodm, bookyear1888
