Which alveolar cells engulf foreign particles and pathogens inhaled into the lungs?
A. alveolar type I cells
B. alveolar macrophages
C. goblet cells
D. alveolar type II cells
Ans: B. alveolar macrophages
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Which correctly describes an action of the hormone insulin?
A. It stimulates the breakdown of glycogen in the liver. B. It is required for the uptake and utilization of glucose by nervous tissue. C. It decreases the uptake of amino acids by muscle cells. D. It increases the uptake and utilization of glucose by muscle and adipose tissue cells. E. It inhibits the action of lipoprotein lipase in the capillaries of adipose tissue.
Clinically, dystrophin is the most important noncontractile protein to occur in muscle fibers.
Answer the following statement true (T) or false (F)
Cancer cells and virus-infected body cells can be killed before activation of adaptive immunity by ________
A) B lymphocytes B) T lymphocytes C) pinocytosis D) natural killer cells
The afferent and efferent nerves:
A) are regulated by the sympathetic nervous system. B) are receptors stimulated by the sympathetic nervous system. C) are responsible for the somatic functions of the spinal cord. D) originate from the hypothalamus and regulate temperature.