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how does spermogenesis differ from oogenesis?
in spermogenesis, spermatozoa are produced continuously and in large numbers-while inoogenesis,ova are not produced continously and females only have a fixed number oocytes at birth and that is the total number available in her lifetime
what are 2 main functions of the testes and where in the organ does each take place?
- spermatogenesis-seminiferous tubles
- hormone production-interstitial cells of the seminiferous tubles
what are the 3 main parts of a spermatozoon and what is the main purpose/function of each?
- head- contains the nucleus
- midpiece- power plant-mitochondria
- long narrow tail- muscle-like contractile fibrils produce movement
where are spermatozoa stored before ejaculation?
name 3 different accessory sex glands and describe their function
- alkaline-counteracts the acidity of the female repro tract
- fructose-acts as an energy source
- prostaglandins- stimulate contractions to move sprem up the oviduct
what are the main components of the spermatic cord?
- vas deferens
- pampinform plexus
- testicular vein
- testicular artery
what are the 3 main parts of the penis?
roots, body, glans
how does the mechanism of erection in animals with a sigmoid flexture differ from that of other animals?
- with sigmmoid flexure- non erect penis is s shaped and does not enlarge during erection, it straightens
- in other animals, erect penis is under hydraulic pressure producing enlargement and stiffening