Megan wants to enter a weight-lifting competition and consults you as to what type of muscle fibers she needs to develop and how she should go about it. What would you suggest to her?
Weight lifting requires anaerobic endurance. Megan would want to develop her fast fibers for short-term maximum strength. She would achieve this by engaging in activities that involve frequent, brief, but intensive workouts, such as with heavy weights to the point of muscle fatigue. The fatigue triggers the production of new myofilament proteins, leading to muscle bulk and strength.
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Describe the neuromuscular junction
A) The neuromuscular junction is where the dendrites of a motor neuron interact with the skeletal muscle fiber midway along the fiber's length. B) The neuromuscular junction is where the cell body of a motor neuron interact with the skeletal muscle fiber at one end. C) The neuromuscular junction is where the axon terminals of a motor neuron interact with the skeletal muscle fiber midway along the fiber's length. D) The neuromuscular junction is where the dendrites of a sensory neuron receive inputs from a skeletal muscle fiber. E) The neuromuscular junction is where the axon terminals of a sensory neuron receive inputs from a skeletal muscle fiber.
Most hydrogen ions are secreted
A) passively into the proximal convoluted tubule. B) actively from the distal convoluted tubule. C) passively from the distal convoluted tubule. D) actively into the entire renal tubule.
Which layer of the digestive tract wall contains loose connective tissue, lymph nodules, blood vessels, and nerves?
A. Muscularis B. Mucosa C. Serosa D. Submucosa
There are ________ pairs of spinal nerves.
A. 12 B. 24 C. 35 D. 31 E. 62