People dream
A) about 15 minutes during the night
B) about every 30 minutes in each 90 minute cycle
C) more often in NREM sleep than in REM sleep
D) about 90 minutes a night
Ans: D) about 90 minutes a night
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In the systemic circulation, the PO2 of arterial blood exceeds the PO2 of venous blood, while the reverse is true for the pulmonary circulation.
Answer the following statement true (T) or false (F)
The higher blood pressure number (systole) occurs as the heart ________________________________________
Fill in the blank(s) with correct word
Why does blood flow in only one direction through the blood vessels?
What will be an ideal response?
The four processes involved in heat exchange with the environment are __________.
a. physiological, behavioral, generational, and acclimatization b. radiation, conduction, conviction, and evaporation c. sensible, insensible, heat loss, and heat gain d. thermogenesis, dynamic action, pyrexia, and thermolysis