Days

 

Days

GloPoWriMo Day 11

This is an erasure poem. The full text is here:

Bazett’s group (9, 18) also observed that 4 days of acclimatiza- 
tion to a warm environment caused both the maximal and average 
blood flow through a man’s fingers to increase by 10 to 25 % over 
values observed on the first exposure to heat. When exposed to cold 
after acclimatization to heat, the men were unable, by vasoconstriction, 
to reducd blood flow to the fingers to the usual low level of about 
1 cm?/100 g of tissue/min, It required 2 or 3 days of exposure to 
cold to prepare the heat-acclimatized men for maximal peripheral 
vasoconstriction. 

Grant and Pearson (19) made the significant observation that 
the venous blood flow through the skin of the forearm is derived not 
only from the digits and hands, but to an important degree from the 
muscles of the forearms. Since cutaneous veins are thus supplied 
with blood from the muscles and deeper tissues, they must play an 
important and direct part in heat regulation. Bazett et al. (9)' noted 
increased distention of the superficial veins of the forearm in relation 
te 4 or 5 days of acclimatization to heat. Bass et al. (13, 20) suggest 
that increased venomotor tone may be an important part of the accli- 
matization of men to heat. In relation to this, there is evidence of 
increased peripheral resistance and decreased forearm volume by men 
in the heat after full acclimatization and these findings are in turn 
consistent with the fall in skin temperature which has been repeatedly 
observed during acclimatization (3, 4). Landis has found that changes 
in venomotor tone play an important part in compensating for blood 
loss or pooling. 

The original is here: https://archive.org/stream/proceedingsofsix0006unse/proceedingsofsix0006unse_djvu.txt