The right half of the heart pumps blood through the ____ circuit and the left half pumps blood through the ____ circuit
a. systolic, diastolic.
b. coronary, pulmonary.
c. systemic, pulmonary.
d. pulmonary, systemic.
e. systemic, coronary.
D
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A drop of dilute ammonium Hydroxide (NH4OH) is placed on one slide containing a large number of swimming paramecium. Under this condition, which of these behaviors of the paramecia will be observed?
a. They will eventually all swim toward the ammonium hydroxide b. They will show no net change in behavior to the ammonium hydroxide c. The will be instantly killed by the ammonium hydroxide d. They will eventually all swim away from the ammonium hydroxide
The heart is confined within a double-walled serous membrane sac. The part of the membrane that is in contact with the heart is the _____ layer
A. serous B. visceral C. parietal D. synovial E. mesothelial
The genes found in a region called the major histocompatibility complex are also called __________.
a. immunoglobulins (IgG) b. alpha and gamma interferons c. autoantibodies d. human leukocyte antigens (HLAs)
The composition of alveolar air differs from atmospheric air. Indicate all of the factors that account for this difference
Nitrogen does not enter alveoli Difference in overall (total) pressure Presence of water vapor Gas exchange adds carbon dioxide Gas exchange removes oxygen