Reproductive System Flashcards
Where does approximatly 60% of seminal fluid come from?
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Seminal vesicle
What does the seminal fluid that comes from the seminal vesicle contain?
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Fructose that nourishes sperm
Where does approximatly 30% of seminal fluid come from?
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The Prostate Gland
What does the seminal fluid coming from the prostate contain?
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Enzymes that activate sperm
Where does approximatly 5% of seminal fluid come from?
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bulbourethral gland
What does the seminal fluid from the bulbourethral gland do?
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washes away urine residue
Where does spermatogenisis occur?
In the seminiferous tubules
Where does maturation of the sperm occur?
in the epididymis
How many chromosomes do humans have?
46
What are the steps in Spermatogenisis?
Mitosis->Primary spermatocyte->Meosis 1->Secondary spermocyte->Meosis 2->Spermatid->Spermogensis (Maturation of the sperm cells)
What are the three parts of the sperm and what do they do?
Acrosome-Allows sperm to penetrate egg
Middle Piece->has a abundance in mitochondria
Tail->flagellum cell
What is it called when information is exchanged between homologous chromosomes
Crossing over
What connects the seminiferous tubules to the epididymis?
rete testes
What surrounds the seminiferous tubules?
intersitial cells which produce testosterone
How long does it take for sperm to mature?
12-16 days
What propels sperm from the epididymis to the urethra?
vas deferens and ejaculatory ducts
What stimulates LH and FSH release from the anterior pituitary?
GnRH
What hormone stimulates ICF cells to produce testosterone?
LH
What hormone stimulates sperm cell secretions?
FSH
When does oogenesis occur?
before birth
When does the secondary oocyte complete meiosis 2?
if the oocyte is fertilized
What does the primary follicle release?
the Primary oocyte
What does the tertiary or Graaphian folical release?
it releases the Secondary oocyte
What secrete progesterone?
the corpus inteum
