1 / 17

Human Anatomy

Human Anatomy. The Male Reproductive System Part 1. Objectives- part 1. Describe the elative placement of the following structures & how they fit into the pathway of sperm delivery:

desiree-pratt
Download Presentation

Human Anatomy

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Human Anatomy The Male Reproductive SystemPart 1

  2. Objectives- part 1 • Describe the elative placement of the following structures & how they fit into the pathway of sperm delivery: • Testis, epididymus, vas deferens, seminal vesicle, ejaculatory duct, prostate, bulbourethral gland, urethra, penis • Describe the mulitple roles of the testis -

  3. Objectives- part 2 • Describe Cryptorchidism and its treatment • Describe the role of epididymus • Explain the importance of testicular placement and it role in sperm viability

  4. Functions of ♂ Reprod. System • Production of sex cells (1° sex organ) • Delivery of sex cells (sperm) to place of fertilization • Production of male sex hormones

  5. Overview

  6. Testes (Testis, sng.) • 1° sex organ • production of ________________ • Secretion of testosterone • Suspended within the scrotum • Scrotum is a pouch of skin with a thin muscular wall • Testes first appear at 7 weeks next to kidneys

  7. Cryptorchidism • Failure of one or both _________ to descend into the scrotum prior to birth • 3% of full term males • 30% of premature males • Most descend w/in a few weeks after birth • Sterility occurs if not descended • Usually removed by puberty -- cancerous

  8. Testes scrotal sacs separated

  9. Scrotum • Wall comprised of _________ muscle – the Dartos • Cremaster m. (skeletal m.) attached to dermis • Temperature control of testes • Sperm development occurs at < 35°C • Sperm will not develop at body temperature (36.8°C).

  10. Testes Comprised of hollow tubing – seminiferous tubules • This is where sperm ________________

  11. Seminiferous Tubule

  12. Seminiferous Tubules • Each testis contains ~ 800 seminiferous tubules. • Each tubule is about 2.5 ft. in length. • Each testis contains ~ one half mile of tubing. • Sperm maturation takes about 9 weeks.

  13. Sperm

  14. Structure of Sperm • Sperm cells consist of: • Head – containing the nucleus (male DNA) • Middle piece and neck – contains large spiral mitochondrion • ____ – corkscrew motion to propel sperm • Acrosome – membrane bound bag of enzymes covering head.

  15. Testosterone Production • Occurs in ________cells _________ seminiferous tubules

  16. Epididymus • Located on posterior/superior border of testes • Acts as recycling center for damaged sperm • Stores __________for up to 2 months • Allows sperm to be fully functional -- capacitation

  17. Epididymus

More Related