CAS BI 107 Study Guide - Quiz Guide: Embryonic Stem Cell, Antibody, 8 Seconds
23 May 2017
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Male deposit sperm cells into vagina of female sexual intercourse. Temperature regulation (36 degrees celsius to produce fertile sperm) Cold: smooth muscle contract move testes closer to abdomen warmth. Warm: testes loose and suspended well away body. Consists many compartment/lobules, contain highly convoluted tubules: seminiferous tubules. Group endocrine cells, interstitial cells (cells of leydig) found in tubules. Produce sperm (germinal layer) and hormone testosterone (interstitial cells) Seminiferous tubules join to form, highly convoluted. Immature sperm enter epididymis where they mature become motile/fertile. Sperm viable approximately 3 months, broken down by epithelial cells of epididymis and reabsorbed body. Leaves scrotum pass through prostate gland and enter urethra. Push mature sperm forward by strong peristaltic wave from epididymis to urethra = ejaculation. No worry contamination, muscle sphincter so urine and sperm cant mix. Transfer of sperm from male into vagina female. Made of tissue and huge sinuses that fill with blood.
