Propecia hair follicles become desensitized to

This preview shows page 1 - 3 out of 3 pages.

Propecia hair follicles become desensitized to testosterone inhibits testosterone, testosterone levels 1
Image of page 1

Subscribe to view the full document.

hair follicles relax and hence hair grows SPERM: -2 day life -300 million per ejaculate -3ml per ejaculate Head = acrosomal cap - contains genetic material (DNA) - has hydrolytic enzymes allow sperm to penetrate the egg Body = middle portion -has mitochondria (energy production for movement) Tail – important for mobility -matures at puberty -travels from seminiferous tubules epididymus & stored in vas def. EPIDIDYMUS – tightly coiled tube on top & behind testis -sperm matures here -continuation of seminiferous tubules VAS (ductus) DEFERENS – extension of epididymus -sperm stored here -thick muscular layer (smooth muscle) -muscle contracts and sperm moves upward -part of spermatic cord = vas d. + nerves + blood v. URETHRA – continuation of vas deferens -both vas. d. converge into 1 urethra -last tube to carry sperm out of penis -also part of urinary system -ejaculate consists of semen carries sperm -semen is liquid which accompanies sperm -pH of vagina is very acidic kills sperm
Image of page 2
Image of page 3

{[ snackBarMessage ]}

Get FREE access by uploading your study materials

Upload your study materials now and get free access to over 25 million documents.

Upload now for FREE access Or pay now for instant access
Christopher Reinemann
"Before using Course Hero my grade was at 78%. By the end of the semester my grade was at 90%. I could not have done it without all the class material I found."
— Christopher R., University of Rhode Island '15, Course Hero Intern

Ask a question for free

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern