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Reproductive System
class 1
37
Anatomy
Undergraduate 1
12/01/2008

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Cards

Term
What qualities are unique to the reproductive system
Definition
Only system that is not concerned with individual survival, only system with anatomical and physiological differences between males and females, only system with late onset
Term
What is the function of the reproductive system
Definition
to produce gametes for sexual reproduction
Term
What are the male gametes
Definition
sperm
Term
What are the female gametes
Definition
eggs
Term
How many chromosomes do human body cells have
Definition
46 chromosomes
Term
How many chromosomes do gametes have
Definition
23 chromosomes
Term
What does it mean if a cell is diploid
Definition
it has 46 chromosomes
Term
what does it mean if a cell is haploid
Definition
it has 23 chromosomes
Term
What is meiosis
Definition
a two part process that results in half of the normal chromosomes
Term
What is a zygote
Definition
a single diploid cell that arises from the union of a sperm and an egg
Term
How does a zygote become a human
Definition
through multiplication and differentiation of cells
Term
What is spermatogenesis
Definition
the creation of sperm
Term
Where does spermatogenesis occur
Definition
in the seminiferous tubules in testes
Term
When does spermatogenesis occur
Definition
in puberty
Term
when does spermatogenesis end
Definition
never, it may slow down but does not stop
Term
What is a spermatogonium
Definition
a sperm stem cell
Term
What does the daughter cell of a spermatogonium become
Definition
a primary spermatocyte
Term
What process causes a primary spermatocyte to develop
Definition
mitosis of spermatogonium
Term
How many daughter cells result from spermatogonium undergoing mitosis
Definition
two
Term
What is a primary spermatocyte
Definition
a very immature sperm cell
Term
What process does the primary spermatocyte undergo
Definition
meisois 1
Term
What does meiosis 1 in the primary spermatocyte result in
Definition
it results in two haploid secondary spermatocytes
Term
What process do secondary spematocytes undergo
Definition
meiosis 2
Term
What does meosis 2 in secondary spermatocytes result in
Definition
4 spematids
Term
How many chromosomes do spermatids have
Definition
23
Term
How many chromosomes do secondary spermatocytes have
Definition
23
Term
How many chromosomes do primary spermatocytes have
Definition
46
Term
What is spermiogenesis
Definition
the maturation of spermatids into functional sperm cells
Term
Where does spermiogenesis occur
Definition
it begins in the testis and end in the epididymis
Term
What happens in capacitation
Definition
sperm cells become motile and become capable of fertilization
Term
When do sperm cells become capable of fertilization
Definition
when they have the enzymes necessary to penetrate the barrier around the egg
Term
What hormone does the hypothalamus begin to secrete at puberty
Definition
gonadotropin releasing hormone
Term
What does the secretion of gonadotropin releasing hormone stimulate
Definition
the secretion of luteinizing hormone and follicle stimulating hormone from the anterior pituitary gland
Term
What type of cells does luteinizing hormone bind to
Definition
Leydig cells in the testes
Term
What does luteinizing hormone cause Leydig cells to do
Definition
secrete testosterone
Term
What are the functions of testosterone
Definition
stimulates spermatogenesis and spermiogenesis, produces and maintains sex characteristics, source of libido, stimulates protein synthesis and growth, and stimulates the prenatal development of the male reproductive system and the descent of the testes
Term
What is cryptorchidism
Definition
no descent of partial descent of the testicles
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