1What are the gonads?
testes and ovaries
2What are gametes?
Sperm and ovum
3What are the accessory reproductive structures?
glands and ducts
4What are the supporting reproductive structures?
Penis and vagina
5What is spermatogenisis?
Process in which spermatozoa are produced
takes 2-3 weeks
involves reduction of diploid to haploid via meiosis
6What role do the testi play?
Produce Sertoli cells and leydig cells
Keeps scrotum 3 degrees below body temp via dartos and cremaster muscle
7What do Sertoli cells do and where are they found?
They produce inhibin which regulates sperm production and are found in the testis
8What do Leydid or interstitial cells do and where are they found?
found between seminiferous tubules and produce testosterone
9what are the five parts of the spermatic cord?
Ductus deferens
nerves
testicular artery
testicular veins (pampiniform plexus)
cremaster muscle
10What is a primary spermatocyte? (2n)
Diploid cell
23 chromosomes pairs
meiosis 1 occurs and splits pairs
11What are secondary spermatocytes? (n)
Haploid cells having only 23 chromosomes which then become spermatids
12What are some facts about spermatozoa ?
Produced 300 mil / day
once ejaculated life expectancy = 48 hrs
stored for 10 days in ductus epidiymis
13What are the 3 parts of sperm and their functions?
Head = contains all genetic material
Mid piece = contains mitochondria for energy
Tail / flagellum = propulsion
14What is inhibin and its effects?
inhibin is hormone made by Sertoli cells of the testi
produced when sperm production is met and targets ant pit gland to inhibit ICSH and FSH which inhibits spermatogenisis
15What is the functions of the seminal vesicles ?
Secerets fructose rich fluid that contributes to sperms viability 60%
16What is the purpose of the prostate gland?
secrets alkaline solution to protect sperm in acidic vaginal environments 33%
17what is the purpose of the cowpers gland?
Secerets alkaline substance to protect from acidic urethra envirmonet