Home > Flashcards > Agriculture > Repro. in Domestic Animals

Details Title: Repro. in Domestic Animals Description: Final Total Flash Cards: 96 Created: 06/03/2007 22:07:47	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term efferent ducts Definition transports sperm from rete testis to caput epididymis Term filiform appendage Definition hair-like structure found on ram's glans penis Term lobules Definition testicular septa partition the seminiferous tubules into these Term tunica albuginea Definition fibromuscular coat encasing testicular parenchyma Term cauda epididymis Definition principal site for extragonadal sperm reserves Term fimbria Definition with the mesosalphinx, comprises the ovarian bursa Term mesovarium Definition chalice-shaped in the mare Term ampulla Definition glandular enlargement on the vas deferens Term vulva Definition female external genitalia Term cervix Definition longitudinal folds in the mare Term vas deferens Definition principal duct involved in emission Term vestibule Definition location of the glands of Bartholin Term tunica vaginalis Definition double-walled layer adjacent to the scrotum that is continuous with the male's peritoneum Term bulbus glandis Definition vascular enlargement located on the shaft of the dog penis Term ovulation fossa Definition covered by a patch of germinal epithelium in the mare ovary Term seminiferous tubule Definition site of spermatogenesis Term infundibulum Definition funnel-shaped end of the oviduct Term myometrium Definition uterine muscularis Term clitoris Definition develops from the genital tubercle Term isthmus Definition connects to the utero-tubal junction Term urethral orifice Definition dividing line between the anterior and posterior vaginae Term mediastinum Definition supports the rete testis Term mesometrium Definition uterine broad ligament Term baculum Definition cartilaginous or bony structure located in penis Term hilus Definition base of the ovary where blood vessels enter and exit Term tunica vasculosa Definition vascular layer of the testis Term ampullary-isthmic junction (AIJ) Definition The site of fertilization in the female tract Term granulosa luteum Definition cells in the corpus luteum regarded as high progesterone producing Term theca luteum Definition cells in the corpus luteum that add mass by hyperplasia Term corpus albicans Definition the scar-like structure the corpus luteum regresses into Term disseminate and (corpus, lobulated, body) Definition two types of prostate gland morphology possessed by the bull Term psuedostratified columnar w/stereocilia Definition the epithelium of the vas deferens Term simple duplex Definition the uterine type possessing one vagina, two cervices and two separate uterine horns Term bicornuate Definition the uterine type having one cervix, an uterine body and two not separated uterine horns Term Tunica dartos contract decrease Definition When moved from a warm to a cold environment, the smooth muscle in the scrotum called the ______ would ______ (relax, contract) causing the scrotal surface area to ________ (increase, decrease). Term False Definition Females have a greater number of ovarian oocytes as adults compared to pre-pubertal life. (True/False) Term decrease Definition Relative concentrations of oxidized glutathione ________ (increase/decrease/do not change) in epididymal fluid as it moves from the caput to the cauda. Term pampiniform plexus Definition The intertwined vascular network of spermatic artery and veins that functions to maintain testicular temperature cooler than core body temperature. Term pudendal nerve Definition The nerve transmitting sensory impulses from the glans penis to the spinal cord following perception of the erotogenic stimulus. Term caruncles placentome Definition Fetal cotyledons attach to the maternal ________ to form the composite structure called the __________ . Term larger less numerous Definition describe two differences between primorial follicles and primary follicles Term larger zona pellucida present Definition describe two differences between primary follicles and secondary follicles Term antrum formed larger Definition describe two differences between secondary follicles and tertiary follicles Term big antrum well defined theca interna/externa cell layers Definition describe two differences between tertiary follicles and Graafian follicles Term pars intermedia and pars nervosa Definition The posterior lobe of the pituitary gland is comprised of the: a) pars intermedia and pars nervosa b) pars tuberalis and pars nervosa c) pars distalis and pars tuberalis d) pars distalis and pars nervosa Term a hormone receptor that acts like a transcription factor Definition Choose the incorrect answer: Protein hormone mechanism of action is characterized by: -activation of a G-protein -production of cAMP -phosphorylation reactions -a hormone receptor that acts like a transcription factor Term development of both the Mullerian and Wolffian ducts Definition Exposing a female fetus to androgens would result in: -regression of both Mullerian and Wolffian ducts -regression of the Mullerian ducts and development of the Wolffian ducts -development of the Mullerian ducts and regression of the Wolffian ducts -development of both the Mullerian and Wolffian ducts Term distal centriole Definition During Spermiogenesis, the axoneme develops from the : -proximal centriole -chromatiod body -distal centriole -manchette Term phospholipase C Definition In the protein kinase A system, adenylate cyclase is similar in function to what component of the protein kinase C system: -phosphodiesterase -polyphosphoinositides -diacylglycerol -phospholipase C Term pars distalis Definition The pars of the pituitary gland that has the greatest endocrine function is the: -pars nervosa -pars intermedia -pars tuberalis -pars distalis Term secondary Definition The stage of follicular development where the zona pellucida first appears is the -primary -secondary -tertiary -Graafian Term scrotum, external cremaster, tunica vaginalis, internal cremaster Definition In a cross-section of the spermatic cord, indicate the correct order of tissue layers Term golgi apparatus Definition During spermiogenesis, the acrosome develops from the -endoplasmic reticulum -chromatoid body -golgi apparatus -mitochondria Term median hypophyseal Definition Arterial blood is supplied directly to the pars distalis from the: -inferior hypophyseal artery -superior hypophyseal -median hypophyseal -lateral hypophyseal Term hormone Definition A substance, usually a peptide or steroid, produced by one tissue and conveyed by the bloodstream to another to effect physiological activity, such as growth or metabolism. Term hypothalamic-hypophyseal portal system sella turcica Definition Hypothalamic hormones controlling pituitary gland secretion are delivered into a specialized primary arterial capillary plexus called the ________. The depression in the sphenoid bone in which the pituitary gland is located is called the ___________. Term medulla Definition Testicular parenchyma develops from indifferent gonad ___________ (cortex/medulla) Term supraoptic nucleus Definition Oxytocin is produced by cell bodies located in two hypothalamic nuclei. Name one. Term primary oocyte Metaphase I Definition Dogs ovulate oocytes in this stage of oogenesis Term equitorial segment Definition The portion of fused plasma and acrosomal membranes that separates the acrosome from the post-acrosomal region of the sperm head is called: Term residual body Definition The Sertoli cell phagocytizes the bulk of the spermatid's cytoplasmic droplet into a structure called: Term False Definition Bull calves are born with spermatozoa in their seminiferous tubules. (True/False) Term genital folds Definition what fetal structure does the vulva arise from? -paramesonephric duct -genital tubercle -mesonephros -genital folds -urogenital sinus (cranial) -mesonephric duct -urogenital sinus (caudal) Term mesonephric duct Definition what fetal structure does the epididymis arise from? -paramesonephric duct -genital tubercle -mesonephros -genital folds -urogenital sinus (cranial) -mesonephric duct -urogenital sinus (caudal) Term urogenital sinus (cranial) Definition what fetal structure does the bladder arise from? -paramesonephric duct -genital tubercle -mesonephros -genital folds -urogenital sinus (cranial) -mesonephric duct -urogenital sinus (caudal) Term urogenital sinus (caudal) Definition what fetal structure does the Cowper's gland arise from? -paramesonephric duct -genital tubercle -mesonephros -genital folds -urogenital sinus (cranial) -mesonephric duct -urogenital sinus (caudal) Term paramesonephric duct Definition what fetal structure does the cervix arise from? -paramesonephric duct -genital tubercle -mesonephros -genital folds -urogenital sinus (cranial) -mesonephric duct -urogenital sinus (caudal) Term Urogenital sinus (caudal) Definition what fetal structure does the vestibule arise from? -paramesonephric duct -genital tubercle -mesonephros -genital folds -urogenital sinus (cranial) -mesonephric duct -urogenital sinus (caudal) Term mesonephros Definition what fetal structure does the efferent ducts arise from? -paramesonephric duct -genital tubercle -mesonephros -genital folds -urogenital sinus (cranial) -mesonephric duct -urogenital sinus (caudal) Term genital tubercle Definition what fetal structure does the clitoris arise from? -paramesonephric duct -genital tubercle -mesonephros -genital folds -urogenital sinus (cranial) -mesonephric duct -urogenital sinus (caudal) Term Graafian Definition What follicular stage is responsive to LH? Term granulosa Definition What cell population(s) in the follicle is responsive to LH Term decreasing OMIF Definition How do these follicle cells respond to LH? Term they don't have LH receptors Definition Why are ova in other follicles unaffected by LH? Term LH inhibits OMIF allowing oogenesis to continue from primary to secondary oocyte in Metaphase II Definition Describe the changes in oogenesis that are induced by LH for most mammalian females. Term accessory sex glands develop from the urogenital sinus Definition In the development of the male reproductive tract -indifferent gonad cortex becomes testicular parenchyma -testosterone production causes regression of the Mullerian duct -secondary sex cords give rise to seminiferous tubules -accessory sex glands develop from urogenital sinus Term the bulbospongiosus muscle compresses the crura Definition Choose the incorrect answer: During erection and ejaculation in the bull -arteriolar dilation and venous compression causes blood engorgement in the cavernous tissue -the penile retractor muscles relax the bulbospongiosus muscle compresses the crura -the sigmoid flexure straightens Term stimulates milk synthesis Definition Choose the incorrect answer: Oxytocin -is synthesized in the hypothalamus -is secreted by the pars nervosa -stimulates milk synthesis -stimulates myometrial contractility Term stimulates desmolase activity Definition Choose the incorrect answer: Follicle stimulating hormone -causes secretion of androgen binding protein by Sertoli cells -stimulates desmolase activity -maintains spermatocytogenesis to the secondary spermatocyte stage -release is inhibited by inhibin Term coumestrol Definition An example of a phytoestrogen is -coumestrol -zeranol -diethylstilbestrol -estriol Term the primary oocyte is fixed in a resting stage known as the diakinesis stage Definition Chose the incorrect answer: During oogenesis for most species -a secondary oocyte is ovulated -the primary oocyte is fixed in a resting stage known as diakinesis stage -activation is required for completion of meiosis -the terminal oogenetic stage is the ootid Term the preovulatory center of the hypothalamus Definition Choose the incorrect answer: Complementary effects of progesterone and estrogen are exhibited by -mammary gland -uterine growth -estrus behavior -the preovulatory center of the hypothalamus Term prolactin Definition Choose the incorrect answer: Placental hormones include -prolactin -progesterone -hCG -eCG Term progesterone Definition Choose the incorrect answer: The following hormones are luteotrophic: -progesterone -LH -hCG -prolactin Term is luteolytic in pigs Definition Choose the incorrect answer: Estradiol -is the most potent estrogen -is luteolytic in pigs -stimulates myometrial contractions -stimulates endometrial hypertrophy Term cyclopentanoperhydrophenanthrene Definition The chemical name for the 17 carbon steroid nucleus Term syncytiotrophoblast Definition The specific embryonic cells that produce human chorionic gonadotropin Term agonist Definition The D-Leu6-des Gly NH2-10-ethyl amide analog of GnRH is regarded as an _______ (agonist, antagonist) of the native hormone. Term corpus luteum Definition Besides the brain, another source of oxytocin Term endometrial cups Definition The specialzed endocrine organs that produce equine chorionic gonadotropin Term testosterone estrogen aromatase Definition Within the target cells in the fetal male's hypothalamus, ________ is converted to _______ by ___________ (enzyme) wich then functions to defeminize the hypothalamus. Term collagenase Definition Relaxin functions to cause cervical softening and dilation by stimulating cervical fibroblasts to produce this enzyme:____________. Term arachidonic acid Definition The biosynthetic precursor for prostaglandins Term more decrease increasing Definition As puberty approaches, GnRH-secreting neuroendocrine cells in the tonic center in the hypothalamus release _____ (more/less) GnRH and ________ (increase/decrease) in sensitivity to steroidal hormone negative feedback. At the same time, plasma concentrations of the adipocyte hormone, leptin, would be _________ (increasing/decreasing). Term false Definition The dog is an example of a species that spontaneously ovulates mature follicles but only forms functional corpora lutea for a definite period of time after mating. (true/false) Term theca interna LH Definition In the biosynthetic pathway for follicular estradiol synthesis, testosterone production by _______ cells is regulated by _____ (hormone).