. A text-book in general physiology and anatomy. Physiology, Comparative; Anatomy. ARTERIES, VEINS, AND CAPILLARIES 187 better protected. The necessity for this is found in the fact that the bleeding of a cut artery with its pulsing blood is much more difficult to stop than a bleeding vein. If we prick any spot on the skin with a needle we get bleeding, even though no arteries or veins are visible. This is due to the fact that a network of tiny tubes, too small to see with the eye, and called hair tubes or capilla- A. FiGr. 70 — Capillary circulation in tlie web of a frog's foot (X 100); a, &a
. A text-book in general physiology and anatomy. Physiology, Comparative; Anatomy. ARTERIES, VEINS, AND CAPILLARIES 187 better protected. The necessity for this is found in the fact that the bleeding of a cut artery with its pulsing blood is much more difficult to stop than a bleeding vein. If we prick any spot on the skin with a needle we get bleeding, even though no arteries or veins are visible. This is due to the fact that a network of tiny tubes, too small to see with the eye, and called hair tubes or capilla- A. FiGr. 70 — Capillary circulation in tlie web of a frog's foot (X 100); a, &, small veins, d, capillaries in which the corpuscles are seen to follow one another in single series ; c, pigment cells in the skin. lies, because of their tiny dimensions, connect veins and arteries. The relation of arteries, veins, and capillaries may be observed to good advantage by stretching the living web of a frog's foot or tadpole's tail under the objective of a compound microscope. (See Ex. XLV. and Fig. 70.) The blood vessels, which are transparent, show. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Eddy, Walter Hollis, b. 1877. New York, Cincinnati [etc. ] American book Co
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectanatomy
