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Male Physiology - Coggle Diagram

- - - - Noncyclinc reserve cells that produce more pale type A (sit on basement membrane)
    - - At puberty, will give rise to more type A spermatonoai, or type B seprmatogonia (differentiated and enter into meiosis)
  - - - Basal: Only spermatogonia
      - Adluminal: All stages from primaryt spermatoctes on
      - Nourish developing spermatozoa, secrete fluid into seminiferous tubule lumen, digfest cytoplasm, bind FSH and testosterone, produce inhibin, activins, follistatin and androgen binding protien
  - - - Sperm entering epididymis are immobile, cannot bind to zoma pelucida, or fertilize egg
    - - Produce prostaglandins, fructose, fibronogen
    - - Produce thin milky fluid to contribute to viability and motility of sperm in female reporductive tract
      - Inflammation may lead to infertility
    - - TYhick clear mucus for lubrication prior to ejaculation
- - - - contains very little sperm
      - Emission: Sequential contraction of muscles in reproductive ducts to deliver prostatic fluid
      - Expulsion: Filliong of urethra triggers impulses to activate muscles
  - - - Normal arterioles supplying erectile tissue are constricted
      - Parasympathetic reflex to promote relaxation (NO, internal pudendal arteries)
      - Filling of copora cavernosa blcoks drainage
      - Viagara inhibits PDE to maintain cGMP
    - - Decending CNS pathways trigggers by input and input from penis mechanoreceptors increase activity of NO, and decreases sympathetic neurons
        
        Dilation of arteries -> Erection -> Compression fo veins
- - - - Interstitial cells between semineferous tubules
      - Vascularized - good supply of cholesterol
      - Express receptors for LH to secrete lestosterone
  - - - Can be converted to DHT by 5 alpha reductase or to estradiol by aromatase