Variation in percent body water among individuals is primarily due to differences in
a. amount of adipose tissue
b. total muscle mass
c. vasopressin secretion
d. drinking habits
e. glomerular filtration rate
A
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Answer the following statements true (T) or false (F)
1. The average individual has 500 ml of residual volume in his lungs 2. Atelectasis (lung collapse) renders the lung useless for ventilation. 3. The Hering-Breuer reflex is a potentially dangerous response that may cause overinflation of the lung. 4. Strong emotions and pain acting through the limbic system activate sympathetic centers in the hypothalamus, thus modulating respiratory rate and depth by sending signals to the respiratory centers. 5. As carbon dioxide enters systemic blood, it causes more oxygen to dissociate from hemoglobin (the Haldane effect), which in turn allows more CO2 to combine with hemoglobin and more bicarbonate ion to be generated (the Bohr effect).
Which of the following is the common color of a drug container?
a. amber c. purple b. beige d. mauve
Once fertilization has occurred, the activities of development begin. The first such activity is ________
A) the formation of organ systems B) cellular specialization C) an increase in cell number
Insulin is a satiety signal that suppresses appetite, whereas glucagon stimulates appetite
Indicate whether the statement is true or false.