Which of the following structures propagates action potentials from the surface of a muscle fiber to its interior?
A. The sarcomeres
B. The sarcoplasmic reticulum
C. The endomysium
D. The myofibrils
E. The T tubules
E. The T tubules
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Over time diffusion results in the even distribution of a substance throughout an area
Indicate whether this statement is true or false.
A patient was recently diagnosed with cardiovascular disease. Which of the following lifestyle choices could have contributed to this poor health outcome?
A. A high-fiber diet B. A 30-year smoking habit C. Being a vegetarian D. Low saturated fat intake
The anterior ramus of a typical spinal nerve innervates the
A. special senses. B. anterior and lateral trunk and the limbs. C. major thoracic and abdominal organs. D. abdominal wall. E. deep muscles of the back and the skin of the back.
Digestion of food is regulated by the
A. sensory division. B. sympathetic division of the ANS. C. parasympathetic division of the ANS. D. somatic nervous system. E. None of these choices are correct.