BIOL 3330 Exam 3 (Chapters 22 & 23) Questions With 100% Verified Correct Answers

In the seminiferous tubules, spermatogenic cells are located throughout the network of Sertoli cells with the earliest germ cells located closest to the basal lamina of the seminiferous tubule. a.) True b.) False - correct answers a.) True The next layer beneath the germinal epithelium in the ovary is where the follicles are found. a.) True b.) False - correct answers b.) False The formation of the corpus luteum following ovulation is important because the corpus luteum then begins to secrete estrogens. a.) True b.) False - correct answers b.) False Each ovary is covered by a germinal epithelium which is what type of epithelium? a.) Stratified squamous b.) Simple squamous c.) Simple cuboidal d.) Pseudostratified squamous - correct answers c.) Simple cuboidal Primary spermatocytes undergo mitosis to produce secondary spermatocytes. a.) True b.) False - correct answers b.) False Which of the listed components is not part of the uterine mucosa or endometrium? a.) Endometrial stroma b.) Myometrium c.) Simple columnar epithelium d.) Simple tubular endometrial glands - correct answers b.) Myometrium The region of the oviduct which passes into the uterus is called the: a.) Isthmus b.) Infundibulum c.) Ampulla d.) Pars interstitialis - correct answers d.) Pars interstitialis As the Graafian Follicle matures, fluid is secreted to form a crescent-shaped cavity called the: a.) Corpus luteum b.) Zona pellucida c.) Cumulus oophorus d.) Antrum - correct answers d.) Antrum The maternal portion of the placenta is derived from the region of the endometrium that underlies the implantation site called the __________. a.) Chorion b.) Decidua basilis c.) Amnion - correct answers b.) Decidua basilis Renewing stem cells which produce mature sperm are called: a.) Secondary spermatocytes b.) Pale type A spermatogonia c.) Dark type A spermatogonia d.) Type B spermatogonia - correct answers b.) Pale type A spermatogonia The portion of the penis which is trimmed during circumcision is called the __________. a.) Corpus spongiosum b.) Prepuce c.) Tunica albuginea d.) Corpora cavernosa - correct answers b.) Prepuce A hormone called __________ is produced by the corpus luteum towards the end of pregnancy which functions to soften the dense connective tissue of the cervix. a.) Relaxin b.) Progesterone c.) Estrogen d.) Inhibin - correct answers a.) Relaxin __________ cells are tall simple columnar cells found in the seminiferous tubules which provide a nourishing environment for sperm development. a.) Stem b.) Myoid c.) Interstitial (Leydig) d.) Sertoli - correct answers d.) Sertoli The outer edge of the oviduct infundibulum forms a fringe-like area called: a.) Villi b.) Fimbrae c.) Cumulus oophorus d.) Stigma - correct answers b.) Fimbrae Prenatal development of the primary oocyte is completed by its entering a protracted resting stage knowns as __________. a.) Pachytene b.) Zygotene c.) Dictyotene d.) Leptotene e.) Diplotene - correct answers c.) Dictyotene Name the type of epithelium lining the oviducts. a.) Simple squamous b.) Simple columnar c.) Pseudostratified squamous d.) Stratified squamous - correct answers b.) Simple columnar Reserve stem cells which produce mature sperm are called: a.) Secondary spermatocytes b.) Type B spermatogonia c.) Dark type A spermatogonia d.) Pale type A spermatogonia - correct answers c.) Dark type A spermatogonia The Theca interna is composed primarily of connective tissue supporting blood vessels which form a capillary bed in the theca externa. a.) True b.) False - correct answers b.) False The chief initial placental source of human chorionic gonadotrophin is the __________. a.) Corpus albicans b.) Cytotrophoblast c.) Syncytiotrophoblast d.) Nabothian cysts - correct answers b.) Cytotrophoblast The testis is surrounded by a thick fibrous capsule called the: a.) Fibrous epithelium b.) Germinal epithelium c.) Theca externa d.) Tunica albuginea - correct answers d.) Tunica albuginea Spermatids form into spermatozoa without undergoing cell division. a.) True b.) False - correct answers a.) True In the adult, the Sertoli cells are fixed to the basal lamina of the seminiferous epithelium. a.) True b.) False - correct answers a.) True __________ cells are present between seminiferous tubules and produce increased levels of testosterone during puberty to promote spermatogenesis. a.) Stem b.) Interstitial (Leydig) c.) Myoid d.) Sertoli - correct answers b.) Interstitial (Leydig) The spermatogonia which produce primary spermatocytes are called: a.) Type B spermatogonia b.) Pale type A spermatogonia c.) Dark type A spermatogonia d.) Secondary spermatocytes - correct answers a.) Type B spermatogonia The funnel shaped opening of the oviduct that opens into peritoneal cavity and is situated near the ovary is called the: a.) Infundibulum b.) Pars interstilialis c.) Isthmus d.) Ampulla - correct answers a.) Infundibulum If marked breast enlargement occurs in males at puberty, it is referred to as __________. a.) Gynecomastia b.) Colustrum c.) Corpus albicans d.) Atresia - correct answers a.) Gynecomastia One of the roles of the Sertoli cells is to phagocytose residual cytoplasm extruded by developing sperm. a.) True b.) False - correct answers a.) True Spermatogenesis and spermiogenesis describe the same process of sperm maturation. a.) True b.) False - correct answers b.) False When the Graafian Follicle matures, its size spans the width of the ovary cortex. a.) True b.) False - correct answers a.) True Which function below does not belong to the oviduct. a.) Endometrium undergoes thickening b.) Provides environment for fertilization c.) Transports egg to uterus d.) Receives ovum - correct answers a.) Endometrium undergoes thickening As the Primordial Follicle matures, the adjacent connective tissue forms a capsular sheath around follicle cells called the theca folliculi. a.) True b.) False - correct answers a.) True Between the developing oocyte and the follicular cells is formed the zona pellucida. a.) True b.) False - correct answers a.) True The majority of follicles found in the ovary are of what type? a.) Primary Follicle b.) Secondary Follicle c.) Tertiary Follicle d.) Primordial Follicle - correct answers d.) Primordial Follicle The fetal portion of the placenta is derived from the __________. a.) Chorion b.) Amnion c.) Decidua basilis - correct answers a.) Chorion At the time of ovulation, the muscles of the oviduct contract rhythymically in the direction of the uterus helping to move the egg toward uterus. a.) True b.) False - correct answers a.) True The syncitiotrophoblast found in the late blastocyst is unusual because it __________. a.) Forms Nabothian cysts b.) Is formed of cells that have fused together to form a multinucleated mass with no cell boundaries c.) Consists of layers of pale staining cells d.) Arises from the inner cell mass of the late blastocyst - correct answers b.) Is formed of cells that have fused together to form a multinucleated mass with no cell boundaries In the ovary, the atretic follicles are those that are next in line to ovulate. a.) True b.) False - correct answers b.) False The presence of intercellular bridges providing cytoplasmic continuity between developing spermatogonia of the same cell lineage explains why these cells develop in synchrony. a.) True b.) False - correct answers a.) True In a cross section of a sperm at the midpiece, the axoneme is surrounded by __________. a.) The coarse fibers b.) The mitochondrion c.) The mitochondrion and the coarse fibers d.) The dorsal and ventral columns of coarse fibers - correct answers c.) The mitochondrion and the coarse fibers Which is the correct sequence below to describe the process of spermiogenesis. a.) Acrosomal phase to Golgi phase to cap phase b.) Golgi phase to acrosomal phase to cap phase c.) Golgi phase to cap phase to acrosomal phase d.) Cap phase to Golgi phase to acrosomal phase - correct answers c.) Golgi phase to cap phase to acrosomal phase The space inside the seminiferous tubules is really a space that is continuous with the space outside your body mass. a.) True b.) False - correct answers a.) True The 2/3 portion of the oviduct closest to the uterus is called the: a.) Ampulla b.) Pars interstitialis c.) Infundibulum d.) Isthmus - correct answers d.) Isthmus The outermost mesothelial covering of the testis is derived from the membranous lining of a serous sac evaginated from the __________. a.) Peritoneum b.) Prostate c.) Seminal vesicles d.) Seminiferous tubules - correct answers a.) Peritoneum The exocrine portion of the testis produces testosterone. a.) True b.) False - correct answers b.) False Pre-cancerous lesions and carcinomas of the cervix are most likely to develop at the junction where the stratified squamous nonkeratinizing epithelium of the cervical canal meets the simple columnar epithelium of the vagina. a.) True b.) False - correct answers b.) False The prostate is composed of many __________ glands. a.) Compound tubular b.) Compound tubuloalveolar c.) Simple alveolar d.) Simple tubular - correct answers b.) Compound tubuloalveolar Primary oocytes form during prenatal life just like sperm. a.) True b.) False - correct answers b.) False Male primordial germ cells arise from the yolk sac mesoderm. a.) True b.) False - correct answers b.) False During gestation, there is a placental barrier which separates the blood of the mother from the fetus. a.) True b.) False - correct answers a.) True If no fertilization takes place, the corpus luteum degenerates permitting the ovary to begin secretion of follicle stimulating hormone which starts the menstrual cycle again. a.) True b.) False - correct answers b.) False When a primary oocyte enters the long prophase of meiosis I, its 46 chromosomes become microscopically discernable as long, slender threads and is described as __________. a.) Zygotene b.) Diplotene c.) Pachytene d.) Dictyotene e.) Leptotene - correct answers e.) Leptotene The outermost mesothelial covering of the testis is termed the __________. a.) Rete tesis b.) Ductili efferentes c.) Tunica albuginea d.) Tunica vaginalis testis - correct answers d.) Tunica vaginalis testis Primordial Follicles can be found in the medulla and consists of a large oocyte surrounded by a single layer of flattened epithelium. a.) True b.) False - correct answers b.) False The viscosity of cervical mucus is of a relatively thin consistency prior to ovulation making it easier for spermatozoa to negotiate. a.) True b.) False - correct answers a.) True __________ from the anterior pituitary stimulates the interstitial cells in the testis to produce testosterone. a.) Luteinizing hormone b.) Follicle stimulating hormone c.) Androgen-binding protein d.) Inhibin hormone - correct answers a.) Luteinizing hormone Fertilization of the human egg normally occurs in the __________ region of the oviduct. a.) Isthmus b.) Ampulla c.) Pars interstitialis d.) Infundibulum - correct answers b.) Ampulla