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33 Cards in this Set
- Front
- Back
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The primary organ of the male reproductive system is the ?
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testis
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The function of the male reproductive system is
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Produce and delivery sperm to the female reproductive tract, make androgens (male hormones- testosterone)
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Where do the testis originate in embryological terms
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Near the developing kidneys
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What is the name of the cord that guides the testes into the scrotum during fetal development?
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gubernaculum
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Where is sperm made?
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seminiferous tubules
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Where is testosterone made? (location and cell)
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interstitial tissue, interstitital cells (also called Leydig cells)
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How many SETS of chromosomes do humans have?
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Two sets, 2N chromosomes, one set from mother, one from father
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How many chromosomes do humans have?
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46, or 23 pairs, one from mother, one from father
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What do we call making an exact copy of chromosomes and then dividing the cell into two cells?
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mitosis
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What is the process of copying chromosomes to make sex cells called?
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meiosis
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Are two identical copies of the chromosomes made in meiosis?
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NO! the copies are not identical (thanks to crossover)
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What is the process of enabling sperm to fertilize the egg called?
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capacitation
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What part of the sperm does capacitation change?
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the acrosome
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What part of the sperm contains enzymes that allow it to penetrate the egg's protective barrier?
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the acrosome
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What is the fluid that comes from the urethra during ejaculation called?
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Semen
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Semen pH?
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Alkaline
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Sperm use ___________ for energy?
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Fructose
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scrotum function?
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lower temperature of testis
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What branch of the nervous system causes erection?
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Parasympathetic Nervous System
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What branch of the nervous system causes ejaculation?
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Sympathetic Nervous System
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After ejaculation erection is impossible for a time. This is called the?
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Refractory period
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What hormone controls sperm production?
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FSH (formation of Sperm Hormone - not really, but good memory aid
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What hormone controls testosterone production?
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LH (in the male referred to as ICSH - interstitial cell stimulating hormone, remember - interstitial cells make testosterone)
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Effects of testosterone? (know them when you see them)
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Increased growth of body hair, enlargement of the larynx, thickening of the skin, increased muscular growth, thickening and strengthening of the bones, increased RBC, stimulating sexual activity in the brain
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Crossover is a process found in (meiosis, mitosis, both?)
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meiosis only
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Metaphase is found in (meiosis, mitosis, both?)
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both meiosis and mitosis
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Pairing of homologous chromosomes (same chromosome number) is found in (meiosis, mitosis, both?)
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meiosis
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How many pairs of chromosomes are found in sperm or egg? *(gametes)
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One pair, 23 chromosomes total
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What happens in the epididymis? |
Sperm are matured, and become motile |
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What does the prostate contribute to semen? |
Alkaline fluid |
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What do the seminal vesicles add to semen? |
Fructose (sperm nutrition) and prostaglandins (stimulate muscle contraction in female reproductive tract. |
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What is a gamete? |
A human sex cell- sperm or egg. |
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Normal sperm volume and count? |
approximately 100 million / ml normal volume 3-5 ml |
