REPRODUCTIVE SYSTEM Flashcards
primary reproductive gland that produces gametes.
Gonads
What are the 2 Gametes of humans?
Males: Testes
Females: Ovaries
What are the major functional organs that make up the MALE REPRODUCTIVE SYSTEM (4)
Testes
Ducts
Accessory Sex Glands
Penis
A male reproductive organ that is for transport, store,
and assist in the
maturation of sperm
Ducts
A male reproductive organ that is for sperm and
testosterone production
Testes
A male reproductive organ that is for secretion of most of the liquid portion of semen
Accessory sex glands
A male reproductive organ that is for passageway for
the ejaculation of semen
and excretion of urine
Penis
Supporting structure for the testes
Scrotum
Median ridge that
separates scrotum laterally
Raphe
internally
divides scrotum into two
compartments
Scrotal Septum
is also known as testicles
Testes
Testes is also known as?
Testicles
These are paired oval glands in the scrotum
Testes
What is Lobules?
- divides testis into compartments
site of
spermatogenesis
Seminiferous tubules
Seminiferous tubules is the site of spermatogenesis that contains cells: (3)
spermatogenic cells,
the sperm-forming cells,
susten-tacular cells
What will happen during Spermatogenesis?
sperm production
How many days will it take to have a proper sperm production?
takes place for around 65.to 75 days
secretes testosterone, most prevalent androgen
Interstitial cells or Leydig cells
Interstitial cells or Leydig cells are mostly estrogen?
TRUE OR FALSE
FALSE
Interstitial cells or Leydig cells are most prevalent ANDROGEN
a hormone that promotes the development of masculine characteristics
Androgen
Events of Spermatogenesis
- Spermatogonia occurs and differentiates into primary
spermatocytes - Primary spermatocytes replicate their DNA
and form two secondary spermatocytes - Meiosis II occurs and forms 4 haploid cells called spermatids
- Each spermatid becomes a single sperm
cell
primary spermatocytes: cell type and number of chromosomes
diploid, 46 chromosomes
secondary spermatocytes: cell type and number of chromosomes
haploid, 23 chromosomes
Meiosis II occurs and forms?
4 haploid cells
Meiosis II occurs and forms 4 haploid cells
called ________
spermatids
Each spermatid becomes a _________
single sperm
cell
Major Parts of a Sperm (8)
❖ head
❖ nucleus
❖ acrosome
❖ tail
❖ neck
❖ middle piece
❖ principal piece
❖ end piece
How many sperm mature each day?
300M
What are the Hormonal Control of Testicular Function (4)
- gonadotropin releasing hormone (GnRH)
- luteinizing hormone (LH)
- follicle
- inhibin
Stimulates the release of
luteinizing hormone (LH) and follicle-stimulating hormone (FSH)
gonadotropin releasing hormone (GnRH)
Gonadotropin releasing hormone (GnRH) stimulates the release of (2)
luteinizing hormone (LH) and follicle-stimulating hormone (FSH)
GnRH means?
Gonadotropin releasing hormone
controls testosterone secretion by stimulating
interstitial cells
luteinizing hormone (LH)
Luteinizing hormone (LH) controls testosterone secretion by stimulating __________
The interstitial cells
LH means
Luteinizing hormone
stimulating hormone, directly stimulates spermatogenesis
Follicle
Follicle is a stimulating hormone, directly stimulates
_____________
Spermatogenesis
Maintains homeostasis in sperm production by inhibiting FSH
production
inhibin
Inhibin maintains homeostasis in sperm production by inhibiting __________
FSH
production
FSH means
follicle-stimulating hormone (FSH)
Secretes most of the liquid portion of the semen
Accessory Sex Glands
Accessory Sex Glands is composed of (3)
seminal vesicles
prostate
bulbourethral glands
pouch-like structure that secretes alkaline, viscous fluid with fructose, prostaglandins and clotting proteins through the seminal vesicle ducts
seminal vesicles
single, donut-shaped gland about the size of a golf ball,
secretes milky, slightly acidic fluid that contains citric acid, proteolytic enzymes, acid phosphatase, seminal plasmin all of which contribute to the motility and viability of sperm
prostate
pea-sized, releases alkaline fluid into urethra to
protect passing sperm from the acids present
bulbourethral glands
mixture of sperm and seminal fluid
SEMEN
SEMEN contains secretions of? (4)
seminiferous tubules,
seminal vesicles,
prostate,
bulbourethral glands