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53 Cards in this Set
- Front
- Back
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sperm created here
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seminiferous tubule
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70% of semen volume comes from
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seminal vesicles
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30% of semen volume comes from
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prostate gland
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semen contribution from prostate gland made up of
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citric acids, enzymes
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gland that makes pre cum
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bulbourethral
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Sympathetic axons release _____ (_____ of spinal cord)
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norepinephrine, middle
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Parasympathetic axons release _____ (_____ of spinal cord)
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ACh, bottom
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contracting trabecular walls E/F
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flaccid
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constricting arterioles E/F
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flaccid
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blood readily exits the sinusoids E/F
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flaccid
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pressure within the corpus cavernosum is low E/F
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flaccid
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parasympathetic fibers release Ach, VIP and nitric oxide gas E/F
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erect
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Arterioles open, letting blood in E/F
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erect
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smooth muscle relaxes, collapsing veins E/F
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erect
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smooth muscle walls relax, letting blood into sinusoid E/F
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erect
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viagra inhibits an enzyme that breaks down ___
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cGMP
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Nitric oxide increase levels of cyclic GMP (cGMP) in smooth muscle walls E/F
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erect
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activates penile erection during REM sleep
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locus coeruleus
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vasocongestion
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the walls of the vagina engorge with blood
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transudation
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lubricating fluid seeps through vaginal walls
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measure female sexual arousal with
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photoplethysmograph
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what contracts in ejaculation
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urethra and pelvic muscles
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4 types of sex steroids
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androgens, estrogens, progestins, corticosteroids
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when is testosterone highest in women?
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at ovulation
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terminates bone growth in puberty
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estradiol
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when is progesterone highest in women?
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luteal
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steroid hormones are rings of
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carbon atoms
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lipophilic hormones
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steroid hormones
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posterior lobe of pituitary controls
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oxytocin and vasopressin
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when is the uterus's secretory phase?
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luteal
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when is the uterus's proliferative phase?
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follicular
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corpus luteum releases
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progesterone
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tamoxifen and raloxifene act on
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estrogen receptors
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tamoxifen is an agonist in _____, increasing the risk of ______
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uterus, endometrial cancer
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tamoxifen is an antagonist in _______, treating ______
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breast tissue, breast cancer
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raloxifene is an agonist in _____ and an antagonist in ______
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bone tissue, breast/uterus
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Removal of masking proteins on the outer surface of the sperm by enzymes present in the uterus and oviducts
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capacitation
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The sperm’s acrosome fuses with its outer membrane, exposing receptors that bind to the zona pellucida as well as releasing protein-digesting enzymes that clear a path through the zona pellucida, so that the sperm can reach the ovum’s outer membrane
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acrosome reaction
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after 7 weeks, embryo refered to as
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fetus
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Testes and ovaries develop from
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genital ridge
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product of the SRY gene is
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transcription factor
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a protein whose job is to bind to and regulate the activity of other genes
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transcription factor
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germ cells migrate to
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developing gonads
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sertoli cells secrete
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AMH
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leydig cells secrete
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androgens
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____ smaller in gay men
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INAH3
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_____ smaller in male transsexuals
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INAH3
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onuf's nucleus is in…
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sacral spinal cord
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innervates muscles associated with root of penis
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onuf's nucleus
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____ larger in females
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AVPV
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men's brains produce more ____ than female brains
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serotonin
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Pregnancy test strip has antibodies that detect
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hCG
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LH surge ____ hours before ovulation
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36
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