PPT-spermatogenesis Spermatogenesis begin in seminiferous tubules

Begin from spermatogonia Each sperm take 3060 day 300 million sperm product daily spermatogenesis Spermatogonia sperm Spermatocytogenesis Primary spermatocyte . Before You Begin Before You BeginNot all photos in this manual include the most up-to-date product speci Testis weighs about 20 GM and has volume of 15-25 ml, small testicle when the volume is less than 12 ml. The testicular volume could be measured by ultrasound using ellipsoid formula( . lenghth. *width*thickness*,52). . The Reproductive system . includes. the following:. Gonads:. or reproductive organs that produce gametes & hormones.. Ducts:. that receive and transport the gametes.. Accessory glands & organs . Reproduction Definition. T. he . production of offspring by a sexual or asexual process. Sexual Reproduction. Male –Sperm. Female- Egg (Ovum). Gonads -Reproductive organs. Copyright Pearson Prentice Hall. Determines the shape of the crown.. Physically & chemically the dentin closely resembles the bone.. The main morphologic . difference between bone & dentin. is that some of the osteoblasts that form bone marrow enclosed within its matrix substance as osteocytes, whereas the dentin contains only the processes of the cells that form it.. nerves. Nerve fibers were shown to accompany 30 to 70% of the . odontoblastic. process and these are referred to as . intratubular. nerves(within). Dentinal tubules contain numerous nerve endings in the pre- dentin and inner dentin Most of these small . Physically and chemically the dentin closely resembles bone. . The . main morphologic difference between bone and dentin is that some of the . osteoblasts . exist on the surface of bone, and when one of . odontoblasts. have differentiated and begin collagen production. . Dentinogenesis. factors like TGF, IGF and BMP which are present in the inner enamel epithelium, are released and these are taken up by the . The cell cycle extends from the "birth " of a cell , resulting from cell reproduction , to the time the cell itself divides in two.. . The eukaryotic cell cycle. Mitosis :-. All living cells arise from pre-existing living cells.. promotes protein synthesis, growth Human Anatomy & Physiology: Reproduction; Ziser, 20043voice remains high pitchedsome feminizing traitseg. arrangement of fat deposits characteristic of womenmalfunc DR RAJARSHI ASH M.B.B.S.(CAL); D.O.(EYE) ; M.D . - PGT(2 ND YEAR) DEPARTMENT OF PHYSIOLOGY CALCUTTA NATIONAL MEDICAL COLLEGE PARTS OF MALE REPRODUCTIVE SYSTEM A. Gonads – Two ovoid testes prese . Ass.lic. . . Reham. . Saad. . . Kadhum. Objectives . At the end of lecture u should know about . 1. Describe the spermatogenesis and . spermiogensis. . 2. . Drawing the . important stages in transformation of human spermatid into the spermatozoon . Testis and epididymis.. 2. Vas deferens.. 3. Seminal vesicles.. 4. Prostate.. TESTIS. Formed of:. Note:. The Exocrine part of the parenchyma is . Seminiferous tubules. The Endocrine part of the parenchyma is . By . Ass. . Lec. . . Reham. . Saad. . kadhum. . Urogenital System . Functionally . the urogenital system can be divided into two entirely different compounds: . 1. The urinary system. . 2. The genital system. .