Identify the true statement(s)
a. Slow-wave sleep occupies a greater percentage of time than paradoxical sleep.
b. It is harder to fall asleep when fully awake than to stay awake when sleepy.
c. Slow-wave sleep is characterized by frequent shifts in body position.
d. Sleep-on neurons in the slow-wave sleep center bring on sleep.
e. All of the above
E
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During childbirth, anesthesia is administered into the epidural space of the spinal column between which of the following vertebrae?
1. L4 and L5 2. T3 and T4 3. S4 and S5 4. C3 and C4 a) 1 only b) 2 only c) 3 only d) 4 only e) Both 1 and 4
During muscle contraction, all of the following occur, except
A) ATP is hydrolyzed. B) Myosin heads bind to actin. C) The H band becomes shorter. D) Calcium concentration in the sarcomere increases. E) Hemoglobin concentration in muscle fibers increases.
Which of the following associations is most accurate?
A) diarthroses—immovable B) diarthroses—synovial C) amphiarthroses—freely movable D) synarthroses—slightly movable E) All of the answers are correct.
If a ureter is obstructed, a _____ reflex reduces urine production in the kidney on
the affected side. Fill in the blank(s) with correct word