CHAPTKH XXVII 



I ill. I ONTROL "l I ill. I li;. i I 



CONTROL OF THE VASOMOTOR I 



The acth itiea of tl>«' \ a 

 mones and partly bj afferenl imp . 



The Hormone Control 



As u ith t In- respirator} cenl 

 concentration of the blood. When ti 

 \ asoconsl rictor pari of I ! • 

 thai the blood \ easels ar< 

 ing, .!• criterion "t' h) d 

 carbon tli<»\i<l«- in the l»l I 



• • the relationship bj iani 



in the carbon-dioxide tension broughl nal 



breathe atmospheres containing 

 s«.ii' Thus, if a decerel 

 containing 5 per « , « , nt or a 



lira in the arterial blood 



•In- liy<li-" 

 by tin fad thai a similai 

 \ enous inj«'<-t ion of a 



.it. 



Ilisti-.nl of iiij<-<-t . 



in the muscli animal i' 



supply. When a d 



atmosphei 



aboul 



this latenl period in 1 1 



carbon dioxide is inspi 



Ik- produced in thi 



is important to 



employ ed - 

 which the reaull 

 tion caus< 





