The use of elastic bands may appear difficult because the resistance is ____.
A. greater during the concentric phase of the repetition
B. greater during the eccentric phase of the repetition
C. applied during both the eccentric and the concentric phases of the repetition
D. harder on the core muscles than free weights
E. harder on the arm muscles than weight machines
Answer: C
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_____ includes a physical dependence upon a drug, but also encompasses characteristics associated with drug abuse such as the inability to stop using a drug; failure to meet work, social, and family obligations; and tolerance and withdrawal.
A. Drug abuse B. Drug compulsion C. Drug addiction D. Drug fixation
Which of the following best explains why a bone marrow donor needs to be HLA-matched to the recipient?
a. The bone marrow transplant contains enough mature T cells to reconstitute the recipient and the recipient provides the antigen-presenting cells. b. The recipient's MHC molecules mediate positive selection of thymocytes in the thymus that interact with donor-derived MHC molecules in the periphery. c. Reconstituted T cells are restricted by donor, not recipient, HLA allotypes. d. Without an HLA match, the donor-derived thymocytes undergo negative selection. e. If the donor is not HLA matched, the reconstituted T cells will be autoreactive.
Changes in biochemistry due to drug abuse can trigger mental disturbances
Indicate whether the statement is true or false.
Which of the following muscle groups is considered part of the core?
A. diaphragm and cardiac musculature B. transverse abdominis and erector spinae C. pelvic floor and chest musculature D. biceps and hamstring musculature