When the diaphragm contracts,
a. the volume of the thoracic cavity increases
b. lung volume increases as the lungs are forced to expand
c. the intra-alveolar pressure increases
d. both a and b occur
e. a, b, and c occur
D
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Immune surveillance refers to the search for and destruction of bacteria in the blood.
Answer the following statement true (T) or false (F)
A protein consists of
A. an amine group, a carboxyl group, and an R group. ?B. more than 200 amino acids.? C. between 3 and 20 amino acids.? D. a C-terminal, several nucleic acids, and an N-terminal
The upper region of the dermis containing parallel rows of tiny bumps is called the:
a. dermal papillae b. stratum germinativum c. stratum corneum d. subcutaneous layer
How many bones form the elbow?
A) one B) two C) three D) four