What effect does a long period of skeletal muscle inactivity have on blood flow?
A. It causes blood pooling and a slowing of blood flow.
B. It causes a compensatory increase in arterial pressure.
C. It causes a sharp decrease in heart rate.
D. It causes a sharp decrease in respiratory rate.
Answer: A. It causes blood pooling and a slowing of blood flow.
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You are counseling a pair of tired parents. All three of their children have been waking in the night frequently for the past few months. You ask them several questions about their parenting habits, which of the following might be the problem?
A. Their kids are growing. B. Their kids are going to bed hungry. C. Their kids are genetically predisposed to nightwaking. D. Their kids are talking too much before bed and becoming excited. E. Their nighttime baths are too hot, elevating their body temperatures.
Which of the following statements about movement via actin polymerization is true?
A) Movement can be generated using actin polymerization by itself (no motor proteins). B) Movement occurs only when motor proteins move across actin polymers. C) Actin polymerization prevents growth of filapodia. D) During cell movement there is always a net growth of actin polymer length.
Which of the following is the most important normal hip movement, one that is primarily limited by the surrounding muscles?
A) extension B) abduction C) adduction D) rotation E) flexion
Gas, nutrient, and waste exchange occur between the ________ and the tissues of the body.
A. capillaries and arteries B. arteries C. capillaries and veins D. veins E. capillaries