The nervous system controls body functions and movement through what means?
A) Receptors and effectors
B) Spinal cord nerves and brain tissue
C) Stimulus and response reflexes
D) Electrical impulses and neurotransmitters
D
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Which of the following cell types would be LEAST likely to express MHC class II?
A. B cells B. T cells C. Dendritic cells D. Thymic epithelial cells E. Vascular endothelial cells
Match the term with the description
A. low bone density B. joint stiffness C. loss of muscle fibers D. loss of muscle fiber size
Answer the following statement(s) true (T) or false (F)
1. The concentration of greenhouse gases is increasing because of the combustion of fossil fuels. 2. Key sources of chlorofluorocarbons are solvents, refrigerants, and propellants. 3. Life on earth is possible, because the ozone layer absorbs the sun's UV radiation. 4. Health risks linked to depletion of the ozone layer include cataracts and reduced immune response. 5. The United States leads the world in total energy consumption per year.
The scapula is the breastbone
Indicate whether the statement is true or false