INDEX 



137 



nervous control of oxygen 



secretion in, 63 

 reversal of direction of 



oxygen secretion in, 64 

 structure, 63 

 Sympathetic nerves, to heart, 



Symptoms of CO poisoning, 

 48 

 oxygen deficiency, 42, 43 



Temperature regulation, 80, 

 89 

 in dog, by respiration, 13 



Teneriffe, Peak of, 50 



Test for presence of CO in 

 air, 46 



Thyroid in physiological reg- 

 ulation, 80 



Tissandier, 44 



Unconscious activities, 1 

 Urea, 39 



Urea excretion, 83 

 in starvation, 83 

 Urine, "buffer substances" in 

 40 

 lactic acid in, 41 

 nitrogen of, as index of 



blood alkalinity, 39 

 reaction of, 40 

 secretion, effect of sweat- 

 ing on, 79 

 sodium chloride of, after 

 large intake of water, 78 



Vagus apnoea, 22 

 Vagus nerves, effect of cut- 

 ting on breathing, 21, 25, 

 26 

 influence on breathing, 21, 



22, 23, 24, 26 

 to heart, 12> 

 Vapour pressure, in alveoli, 



13, 14 

 Vaso-constriction, chemical, 

 70 

 nervous, 70 

 regulation by adrenal 



glands, 75 

 regulation of circulation 

 rate by, 72 

 Vaso-motor center, 70 

 control of local blood sup- 

 ply by subordinate, 70 

 Vaso-motor nerves, 70 

 Veins, regulation of venous 

 pressure by contraction 

 of peripheral, 74 

 Venous constriction, in rela- 

 tion to COo contents of 

 blood, 74, 75 

 Venous gas pressure, 71, 72 



regulation of, 72 

 Venous pressure, effect on 

 accelerator nerve, IZ, 74 

 in regulation of output 



from heart, 74 

 regulation by CO2 contents 



of blood, 74, 75 

 regulation by passive con- 

 gestion of capillaries, 75 



