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40 Cards in this Set
- Front
- Back
which cell protects the developing sperm from antibodies produced by immune cells
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sertoli cells
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If sperm are fully mature but not motile, which structure do you expect is not functional?
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epidydimys
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which structure transports sperm to the prostate?
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vas deferens
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which hormone would be deficient in a male if he is exposed to a toxin that destroys leydig cells?
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testosterone
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why is semen alkaline?
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because acid will destroy sperm
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what hormone in male regulation is released by the hypothalamus?
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GnRH
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how does GnRH get from the hypothalamus to the anterior pituitary gland?
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by blood vessels
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what cells release FSH and LH in the anterior lobe of the pituitary gland?
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gonadotrophs
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where does ABP go after produced in the testes?
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into the lumen of the seminiferous tubules
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Blocking which type of receptors would result in reduced testosterone levels?
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lh receptors on leydig cells
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Which hormone stimulates sertoli cells to release ABP?
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FSH
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Parasympathetic neurons release _____ into arteries supplying erectile tissue leading to ______
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NO, vasodilation
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_________ innervates the blood vessels that supply erectile tissue
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parasympathetic N.S
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NANC (nonadrenergic noncolinergic) neurons do not release norepinephrine or acytelcholine, but the do release ____
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NO (endothelial cells tend to release NO)
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What is NO effect on smooth muscle cells?
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causes cGMP to be produced
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what does cGMP do?
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gets calcium out of the cytoplasm... therefore muscle relaxes ... blood flow increases which causes blood flow to occur
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what enzyme breaks down cGMP?
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PDE5 phosphodyesterase (if you give someone a drug that destroys the PDE5, then cGMP will not break down and erection will occur.
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what do erectile dysfunction drugs inhibit?
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PDE5 phosphodyesterase
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what does GnRH bind to?.... what hormones does it then secrete into the blood?
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GnRH (which comes from hypothalamus) binds to gonadotrophs... in then secretes LH and FSH into the blood
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what are the functions of prostaglandins?
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to decrease the viscosity of seminal fluid
causes reverse peristalsis |
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what do leydig cells secrete?
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testosterone
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what does testosterone cause?
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stimulation of spermatogenesis
bone and muscle growth male secondary sex characteristics |
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secretion of ______ from the sertoli/sustentacular cells in the testes creates a negative feedback loop in the anterior pituitary gland
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inhibin
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which hormone stimulates sertoli cells to produce ABP?
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FSH
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where does the bacteria of clamitia and ganorea reside in the penis?
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in the glands of littre
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what gets calcium out of the cytoplasm?
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cGMP
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erectile dysfunction drugs inhibit _____
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phosphodyesterase
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the two layers of the uterine wall are __________ and _________
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endometrium, myometrium
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the two layers of the endometrium are the ____ and the _____.... which layer remains throughout menstrual cycle?
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functional ... basal...... basal layer remains... functional gets sloughed off and rebuilds
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what type of epithelium does the vagina have?... what type of epithelium does the cervical canal have?
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non keratinized stratified squamous.... protects from abrasion....simple columnar
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the most inferior part of the uterus is?
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the cervix
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what hormone is added to estrogen after ovulation?
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progesterone
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what cells produce the secretions in a lactating womans breast? (they surround the lobule... increase the pressure)
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myopithelial cell (milk letdown with production of oxytocin)
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what is the first secretion produced by the mammary glands? what does it contain?
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colostrum.... it contains proteins, carbohydrates, antibodies
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what is milk let-down caused by?
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oxytocin stimulates the myoepithelial cells squeezing out milk into the ducts...
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suckling stimulates nerves in the ___ which stimulates the _____ which stimulates the ______ to release _____ which stimulates contraction of the _______
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nipple... hypothalamus... posterior pituitary (neurohypophysis)...releases oxytocin....contraction of the myoepithelial cells
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this benign breast disorder ________ is a slow growing mass of epithelial and connective tissues (solid mass)... it is painless and there are no changes in size with menstrual cycle
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fibroadenoma
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this benign breast disorder _______ is a proliferation of the connective tissue stroma and cystic formation of ducts (fluid filled)... it results from increasing hormone levels. it is painful (masalgia)
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fibrocystic
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where do breast tumors arise most of the time?
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in the ducts (ductal epithelium)
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what happens in ductal hyperplasia? what is the problem with it?
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an increase in number of cells within the duct wall.... it will metastacize throughout the body.
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