Elements of human physiology / by Henry Power.

  • Henry Power
Date:
1888
Catalogue details

Licence: Public Domain Mark

Credit: Elements of human physiology / by Henry Power. Source: Wellcome Collection.

    100/528 page 86
    300 mm., or one foot, per second ; in the maxillary of the horse, 165 mm., or between 6 and 7 inches, per second; and in the metatarsal artery of the same animal about 56 mm., or 2 inches, per second. These estimates are probably all too low. Speak- ing generally, everything which increases the force Fig. 9.—Tracing of the Speed of the Blood Current in the Right Carotid of a Horse when the Left Carotid is compressed. propelling the blood towards the periphery increases the speed of the blood current and the arterial tension, and vice versa. On the other hand, every- thing which increases the resistance that the blood experiences in escaping from the arteries diminishes the speed of the blood current but increases the tension. Movement of the blood in the capillaries. —The circulation in the capillaries may be seen in the web of the frog's foot, in the tongue of the frog, and in the mesentery of various small, warm-blooded animals placed with suitable precautions against desiccation
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