1.1 Teelbal (testis)
° Uitwendig (uitz: konijn) Optimale spermaproductie
° In balzak (scrotum)
° Positie: diersoortafhankelijk – Horiz: hengst – Vertic: stier, beer, ram
° Grootte en consistentie : zb als maat voor de: - Gezondheid
- Vruchtbaarheid
° Te klein = atrofie (afsterven actief weefsel)
° Te groot = ontsteking
° Histologie Serosa (buikvlies) = tunica vaginalis
Bindweefselkapsel = tunica albuginea
Bindweefselschotten
Parenchym = zaadvormend weefsel
Tubuli seminiferi (zaadbuisjes) = +- 5km!
° Parenchym Tubuli contorti (gekronkeld)
- Spermatogoniën
- Sertoli cellen Ondersteuning + Oestrogenen
- Leydig cellen Androgenen (testosteron)
Tubuli recti (rechte)
Tubuli recti verzamelen tot Ductuli efferentes (afvoerkanaaltjes) monden uit in Bijbal
° Ontwikkeling testis: Voor puberteit alleen bindweefsel
Vanaf puberteit start groei zaadbuisjes
1.2 Bijbal (epididimys)
° Kronkelige buis
° Stier: 30m / Beer: 64m / Hengst: 86 m
° 3 delen: Kop (caput) – Lichaam (corpus) – Staart (cauda)
° Ligging: - OP de testes (hengst)
- ACHTER (stier, beer, ram, reu)
1.3 Balzak (scrotum)
° Bedekt met dunne, klierrijke huid
° Dun behaard
° Spieren helpen scrotum in te trekken of te laten zakken ( Tunica dartos + Musculus cremaster)
° Ter hoogte van de dorsale pool van de testis vertakken de venen zich en vormen de plexus
pampiniformis (lett. : zoals een wijnrank die zich kronkelt omheen een stok) rondom de arterie
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