Card Set Information
Lecture exam four
Takes somatic cells and makes two
Reduction and division
Somatic cells have _____ chromozomes
Sex cells have _____ chromozomes
sex cells are also called _____.
Where is sperm made?
What is the male and female sex organ?
What are the 3 main glands that contribute to sperm ejaculate?
bulbourethral ( cowpers gland )
sperm cells have how many chromozomes?
gonads are what type of cells?
What happens in meiosis I?
Reduction of 46 chromozomes to two 23 chromozomes
What happens in meiosis II?
Dna is duplicated 23 chromozomes is duplicated into two 23 chromozome
What are the 2 layers of the testes?
After the sperm leave the seminiferous tubules they go into _____.
When the sperm leave the rete testes they go into _____.
Germ cells will eventually become _____.
These cell types exist in all different layers of the seminiferous tubules and have 3 different names name all 3
germ cells eventually become _____.
make substance called Inhibin to decrease sperm production.
Sustentacular, sertoli, or nurse cells
Keeps small amount of testosterone available in testes for maintaining spermatogenesis (making sperm)
Androgen binding protein
Assists in making sperm
Testosterone secreations is promoted by
causes leydig cells to produce more testosterone
androgens and testosterone are made mostly where?
passageway between scrotum and the abdominal cavity
Fibromuscular cord that guides the descent of the testicles through the inguinal canal
the testicles descent at what age?
Blood vessels, vas deferens, nerves, cremaster muscle that travels with testes.
the stereocilia microvilli in the epididymis have the ability for what?
Highly coiled up to 20ft in lenth
What are the 3 erectile tissues?
2 corpora cavernosa
1 corpus spongiosum
Bulk of semen
Alkaline secreations to neutralize acidic vagina
secreations contain fructose and vitamin C
_____ stimulate muscle contractions both in male and females and are found in the _____ gland.
Contains fibrinogen that temporarily clots vagina
20-30% of semen volume
Secreations of acid phosphate
Rounded, glandular tissue wrapped in smooth muscle
secreations of seminaplasmin (antibiotic)
protects against urinary tract infection in males
Bulbourethral glands or cowpers gland
Secretes alkaline fluid that neutralizes any urinaryacids in urethra
bulbourethral gland or cowpers gland
The hypothalamus releases _____ hormone to the _____.
Gonadotropin releasing hormone
anterior pituitary gland
The anterior pituitary gland releases these two types of hormones
Follicle stimulating hormone
The Lutenizing hormone causes the _____ cells to produce _____.
The Nurse cells or sertoli cells release either _____ or _____.