Examlex
Second messenger systems use ________ to respond to hormones bound to receptors on the cell membrane.
Refractory Period
Time following an action potential when a neuron is unable to conduct another nerve impulse.
Ejaculation
The discharge of semen from the male reproductive tract as a result of sexual climax.
Spermatogenesis
The biological process of sperm cell development in males, which takes place in the testes and involves the production and maturation of spermatozoa.
Seminiferous Tubules
Highly coiled tubes within the testes where spermatogenesis, the production of sperm cells, occurs.
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