Details Title: 1st test Description: 1st test 2nd set Total Flash Cards: 15 Created: 03/07/2006 20:28:19		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Biology Flashcards
Cards in this set: Term Endoncrine System Definition affects metabolism, growth, development, reproductions Term 2 main categories of hormones Definition 1. steroid 2. peptide Term Steroid Definition *estrogen, testosterone, androgen *secreted by cell that they act on, do not enter bldstrm *doesn't like water (lipid-soluble) dissolves in fat, goes thru membrane Term Peptide and 3 steps Definition *ADH, insulin 1.binding of horm. to receptor activates g-protein 2.g-protein ->cytoplasm ->activates 2nd messenger 3.2nd messenger relays signal to nucleus Term Mechanism of Release for T3 and T4 Definition hypo -> TRH -> bldstrm -> ant. pit. -> TSH -> bldstrm -> thyroid -> releases t3 and t4 Term 2 functions of t3 and t4 Definition 1.development and maturation of vertebrates; reorg. of tissues, bone formation 2.regulate metabolism Term Pancreas and its 2 diff cells Definition Islet cells: a.alpha cells- detect low glucose in bld, produce glucagon b.beta cells- detect hi glucose in bld, produce insulin Term Male Primate Anatomy 3 parts Definition 1.Testes: seminiferous tubules where sperm develops, release testosterone, housed in scrotum to maintain temp. 2.Epididymus: maturation & storage 3.Vas Deferens: tube thru which sperm travel during ejaculation Term 3 Glands in Semen Production Definition 1.semenal vesicle: produce most semen and fructose (give sperm e!) 2.prostate: alkaline fluid to balance acidity in vagina 3.bulbourethral glands: unknown function Term Hormonal control of reprod. in primate males Definition hypo -> GnRH -> ant. pit. -> release LH & FSH -> bldstrm -> testes -> release testosterone -> make sperm Term Spermatogenesis 3 parts Definition 1.head: nucleus w/dna, acrosome on tip-filled head contain enzymes which chew to penetrate egg 2.neck: mitochondria (give sperm ATP) 3.tail: flagellum Term 5 Reproductive Organs in Females Definition 1.ovaries: produce store eggs, release estrogen & progesterone 2.fallopian tube (oviduct): lined w/cilia which move eggs 3.uterus: smooth muscle 4.cervix: most narrow part of uterus 5.vagina: birth canal Term 3 phases in menstrual cycle Definition 1.Follicular Phase days 1-14 2.Ovulation day 15 3.Luteal Phase days 16-28 Term Follicular Phase Definition 1.primordial follicle, LH & FSH released, follicle starts to grow 2.granulosa cells divide, make estro & prgestro 3.zona pellucida sits between egg & gran cells 4.fluid filled cavity forms in gran cells=antrum 5.mature follicle -> antral follicle 6.LH surge released from ant. pit. 7.enzymes kick into action & chew thru peripheral cells, causes ovulation Term Luteal Phase Definition *endometrium thick w/blood vessels *surge of LH causes gran cells become corpus luteum, secretes e & p *this surge shuts down production of LH & FSH