What is the pericardium?
A. The tissue that lines the heart's four chambers
B. The cardiac muscle tissue of the heart
C. A fluid-filled, double-walled membrane that surrounds the heart
D. None of these are correct.
Answer: C
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At what point during excitation contraction coupling does exocytosis play a role?
A) during calcium ion reuptake into the sarcoplasmic reticulum B) when sodium channels open up on the motor end plate C) during acetylcholine release from the synaptic terminal D) when the action potential surges through the T-tubules E) when ATP splits into ADP and P on the free myosin head
Bile salts aid in the digestion of fats by ________ large fat droplets
A) dehydrating B) anabolizing C) binding D) combining E) emulsifying
An older man sees his doctor for severe pain in his lower abdominal or flank area, elevated temperature, and nausea. Exhaustive tests rule out abdominal obstructions and infections. X rays indicate a shadow on his right ureter. Diagnose his problem. Give suggested treatment and prognosis.
What will be an ideal response?
A vertebrate motor unit is
a. a muscle and the motor neurons that innervate it. b. a muscle fiber and the motor neurons that innervate it. c. a motor neuron and the muscle fibers it innervates. d. a motor neuron and the muscle it innervates. e. none of these.