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29 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What size did you start out as? |
Smallfunctio |
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Function of scrotum |
Maintain cooler temp for viable sperm production |
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Seminiferous Tubules function: |
Produce sperm (coiled tubules packed into lobes) |
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Sertoli cells |
Nourish developing sperm cells |
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Interstitial Cells function |
Surround seminiferous tubules and produce testosterone |
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What does the prostate gland secrete as a component of semen? |
An alkaline, milky fluid that helps neutralize the acidic environment of a vagina |
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What do the bulbourethral glands secrete as a component of semen? |
Mucous secretions (lubricant) |
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2 vas deferens converge to make what duct |
The ejaculatory duct |
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When are nutrients, lubricant, and alkaline fluid released to mingle w sperm? |
In the ejaculatory duct |
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Male primary sex characteristics; |
Penis, testes; sperm & testosterone |
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Male secondary sex characteristics |
Widening of larynx (deeper voice) Ancillary hair (armpit, pubic, facial) Skeletal muscle development |
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Maturation of primary male sex characteristics result in what? |
Production of semen begins |
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Male hormones are _______ after pubert |
Relatively constant |
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Four male hormones: |
GnHR FSH ICSH Inhibin |
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What part of the brain controls testis/GnHR release ? |
Hypothalamus |
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Where is sperm produced? |
Inside seminiferous tubules in testes |
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What does GnHR do in the male? |
Triggers anterior pituitary gland to produce both FSH and ICSH(also goes by LH) |
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What does FSH do in the male? |
Promotes spermatogenesis by entering Sertoli cells and causing them to take up more testosterone |
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Inhibin function |
More sperm made, more inhibin released Keeps tracks of sperm levels |
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ICSH function |
Controls production of testosterone by interstitial cells Causes increasing levels of testosterone in blood |
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Testosterone promotes ______ and _______ of primary male sexual organs |
Development and function |
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Where are mature sperm stored? |
Epididymis behind each testis, then propelled into vas deferens |
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Sperm structure (3 pieces) |
Head middle piece Tail |
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Spermatogenesis is what |
The development of sperm Involves meiosis (halving chromosomes) |
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Special part of head of sperm? And fxn |
Acrosome cap Enzymes needed to penetrate outer barriers of egg |
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What's present in the middle piece of speech that helps it move? |
Mitochondria |
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How many components of semen? |
4 |
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Where are the complements of semen secreted from? |
Seminal vesicles Cowper's gland (bulbourethral) Prostate gland |
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What do the seminal vesicles secrete as a component of semen? |
Nutrients for sperm at time of ejaculation |
Nutrients for sperm at time of ejaculation |
