Spermatogenesis Study guides, Revision notes & Summaries

PC 705 Module 1 Exam - Stress and Genetics Genotype The exact gene allele composition for a single gene trait Phenotype the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment. Ploidy Number of chromosomes present in nucleus of cell in metaphase at mitosis Haploid 1N—One complete set of chromosomes (23) Ex: gametes Diploid 2N—-both pairs of chromosomes (23 pairs or 46 individual) Polyploidy Extra chromosomes in every pair. ...

What is the first sign of puberty in females? Breast development approx age 10 (7-13), about 3 years to develop When does Menses begin? ages 8-16 first is irregular and w/o ovulation What is FSH? What does it do in females? FSH - follicle stimulating hormone Females - stimulates ovarian development and estrogen production. What is FSH? What does it do in males? FSH - follicle stimulating hormone males - develops tubes in testes --> spermatogenesis & ...

Glycogenolysis - breakdown of glycogen to glucose 46 chromosomes - diploid cells Glycogenesis - formation of glycogen from glucose trophoblast - is the wall of the blastocyst that becomes the placenta allele - An alternative form of a gene. BB - homozygous dominant Bb - Heteroxygous recessive in the fallopian tubes - Where does fertilization occur? fetus - the developing human organism from 9 weeks after conception to birth positive feedback - Nipple stimulation causes...

Test Bank for Larsen’s Human Embryology, 5th Edition Test Bank 1-2 Schoenwolf et al.: Larsen's Human Embryology, 5th Edition Chapter 1: Gametogenesis, Fertilization, and First Week Test Bank MULTIPLE CHOICE 1. A child with a large sacrococcygeal teratoma is delivered by cesarean section. The teratoma likely arose from which type of cells? A. Neuroectodermal stem cells B. Neural crest cells C. Primitive streak cells D. Primordial germ cells E. Secondary oocyte cells ANS: D 2. A ...

Biology 30 (Alberta) Reproduction and Embryology Latest Graded A+ Kidney - Filters blood of impurities (eg. Urea) and produces urine. Ureter - Transports urine to the bladder for storage. Bladder - Stores urine. Urethra - Common duct for the excretion of urine and semen from ejaculation. Testes - Produces sperm under the influence of FSH and testosterone under the influence of LH. Epididymis - Involved in sperm maturation (first 2/3rd's) - last 3rd is involved in mature sperm ...

testes - produces the male spermatozoa spermatogenesis - development of sperm cells=in seminiferous tubules scrotum - pouch that contains the testes Cowper's glands (a.k.a. bulbourthral) - lubricates the urethra, neutralizes acidity from urine that can destroy sperm prostate gland - organ that surrounds the neck of the bladder, secretes fluid that mixes with fluid from seminal vesicles to promote sperm motility androgens - male sex hormones vas deferens (a.k.a. ductus defere...

Wallace TCU A&P2 Final Exam questions and answers well illustrated. Gametes - correct answers.Sex cells. Eggs and sperm. Gonads - correct answers.Produce gametes Ducts - correct answers.Store and transport gametes Accessory sex glands - correct answers.Produce substances that protect gametes and facilitate movement Male gonads - correct answers.Testes Testes - correct answers.Produce sperm and secrete hormones. Paired oval glands in the scrotum. Develops near kidn...

seminiferous tubules - Answer-The testes contain ____ ____ sperm are produced The Juxtaglomerular Apparatus is a(n) ___ composed of macula densa which are specialized epithelial cells in the Distal Convoluted Tubule (DCT) - Answer-Endocrine structure If decreased blood pressure is sensed by the Juxtaglomerular (JG) cells, the JG cells release the hormone renin, which activates angiotensin (also hormone). Angiotensin causes vasoconstriction and secretion of aldosterone (mineralocorticoid hor...

Biology 101 Final Exam Review 100% Verified A+ Sperm cells and egg cells are examples of ? A. Body cells B. Meiosis C. Gametes D. DNA - ANS-C. Gametes Each GAMETE contains ? many chromosomes as a body cell. A. twice as many B. half as many C. the same amount D. 1/3 as many - ANS-B. half as many Which of the following distinguishes Prophase I of meiosis from Prophase of mitosis? A. crossing over B. chromatids become visible C. spindle forms D. nuclear membrane breaks do...

What does the HPG axis regulate? Spermatogenesis, oogenesis, ovulation, preparation of the uterus for implantation Hypothalamus related to HPG axis Releases GnRH GnRH related to HPG axis Stimulates anterior pituitary gland to release FSH and LH Follicle Combination of different cells that surround and support the oocyte Produce and secrete estrogen FSH and LH Stimulate ovulation and production of estrogen by developing follicles FSH: stimulates development of supportive cells of follicle...