The presence of which of the following causes skeletal muscle to be bright red?
A. Troponin
B. Myoglobin
C. A bands
D. Tropomyosin
E. Myosin
Answer: B
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A contraction that generates enough force to move a load is known as ________, whereas one that generates force that equals the load is known as ________.
A) isotonic, eccentric B) isotonic, isometric C) isometric, isotonic D) isometric, eccentric E) isotropic, isometric
The stretch of a full urinary bladder is detected by a(n):
A) exteroceptor. B) photoreceptor. C) thermoreceptor. D) interoceptor.
Max works out about an hour every day using aerobic machines at a gym. During his moderate physical exercise, blood concentrations of
A. oxygen and carbon dioxide increase. B. oxygen increase and carbon dioxide decrease. C. oxygen and carbon dioxide remain nearly unchanged. D. oxygen decrease and carbon dioxide increase.
B-lymphocytes are
A. antibody-producing red blood cells. B. immune system cells that are generated in the tonsils. C. platelets that are generated in the thymus. D. white blood cells that are generated in red bone marrow. E. blood cells found only in people with type B blood.