What is involved in the process of spermiogenesis?
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Spermiogenesis is the process whereby each spermatid matures into a single spermatozoon. During this process, spermatids are embedded within the cytoplasm of large nurse cells attached to the tubular capsule and extend toward the lumen between the spermatocytes undergoing meiosis. During these processes, the spermatids gradually assume the appearance of mature spermatozoa. At spermiation, they lose attachment to the nurse cell and enter the lumen of the seminiferous tubule. The entire process takes approximately nine weeks.
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Indicate whether the statement is true or false
Muscles are responsible for producing most of our body heat.?
Indicate whether the statement is true or false
When comparing the chemoreceptors of the olfactory and gustatory systems, which of the following statements is NOT true?
A. Only olfactory receptor cells are neurons with axons. B. Only taste receptor cells have ionotropic receptor mechanisms. C. Only olfactory receptor cells connect directly to the cerebrum. D. Only taste receptor cells are clustered in buds. E. Only olfactory receptor cells are continuously regenerated throughout life.
Describe the events that occur at a skeletal neuromuscular junction. Include the following in your answer : action potential (on axon and muscle fiber), end-plate potential, terminal button, ACh, Ca+2 channels, motor end plate, depolarization, and Na+ channels
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