reproduction unit. male reproductive system puberty - period of growth when secondary sex...
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Reproduction UnitReproduction Unit
Male Reproductive SystemMale Reproductive SystemPuberty - period of growth when
secondary sex characteristics appear.Puberty begins when a male begins to
secrete:Testosterone, a hormone that
produces male secondary sex characteristics
Puberty - period of growth when secondary sex characteristics appear.
Puberty begins when a male begins to secrete:Testosterone, a hormone that
produces male secondary sex characteristics
Male Secondary Sex CharacteristicsMale Secondary Sex Characteristics Increase in height Increase in
perspirationGrowth of underarm
hairGrowth of pubic
hairBroader shoulders
Increase in height Increase in
perspirationGrowth of underarm
hairGrowth of pubic
hairBroader shoulders
Deepened voice Increase in muscle
mass Increase in size of
reproductive organsFormation of sperm
Deepened voice Increase in muscle
mass Increase in size of
reproductive organsFormation of sperm
Male Reproductive SystemMale Reproductive SystemThese characteristics may not appear all
at once. They will vary from person to person.
Reproductive System - organs in the body involved in producing offspring
These characteristics may not appear all at once. They will vary from person to person.
Reproductive System - organs in the body involved in producing offspring
PenisPenisPenis: 1, E
Male sex organ
Used for reproduction
Used for urination
Penis: 1, EMale sex organ
Used for reproduction
Used for urination
Urethra
Penis
TesticleScrotum
Epididymis
Vas Deferens
Cowper’s Gland
Prostate Gland
Seminal Vesicle
TestesTestesTestes: 2, I
2 glands
Produce testosterone & sperm cells
Testes: 2, I2 glands
Produce testosterone & sperm cells
Urethra
Penis
TesticleScrotum
Epididymis
Vas Deferens
Cowper’s Gland
Prostate Gland
Seminal Vesicle
ScrotumScrotumScrotum: 1, E
Sac-like pouchHolds testesRegulates testicle temperature so
that healthy sperm are created
Scrotum: 1, ESac-like pouchHolds testesRegulates testicle temperature so
that healthy sperm are created
Urethra
Penis
TesticleScrotum
Epididymis
Vas Deferens
Cowper’s Gland
Prostate Gland
Seminal Vesicle
EpididymisEpididymisEpididymis: 2, I
Structure on top of the testes
Where sperm mature
“Sperm School”
Epididymis: 2, IStructure on top of the testes
Where sperm mature
“Sperm School”
Urethra
Penis
TesticleScrotum
Epididymis
Vas Deferens
Cowper’s Gland
Prostate Gland
Seminal Vesicle
Vas DeferensVas DeferensVas deferens: 2, I
2 long, thin tubes
Passageway for sperm
Stores sperm
Vas deferens: 2, I2 long, thin tubes
Passageway for sperm
Stores sperm
Urethra
Penis
TesticleScrotum
Epididymis
Vas Deferens
Cowper’s Gland
Prostate Gland
Seminal Vesicle
Seminal VesiclesSeminal VesiclesSeminal Vesicles: 2, I
2 small glandsSecretes sugary fluidHelps sperm to swim / provides
energy to sperm
Seminal Vesicles: 2, I2 small glandsSecretes sugary fluidHelps sperm to swim / provides
energy to sperm
Urethra
Penis
TesticleScrotum
Epididymis
Vas Deferens
Cowper’s Gland
Prostate Gland
Seminal Vesicle
Prostate GlandProstate GlandProstate Gland: 1, I
Produces fluid to keep sperm alive
Balances the pH of the fluid
Prostate Gland: 1, IProduces fluid to keep sperm
alive
Balances the pH of the fluid
Urethra
Penis
TesticleScrotum
Epididymis
Vas Deferens
Cowper’s Gland
Prostate Gland
Seminal Vesicle
Cowpers GlandsCowpers GlandsCowper’s Glands: 2, I
2 small glands
Secretes fluid that cleans out urethra before sperm move through
Cowper’s Glands: 2, I2 small glands
Secretes fluid that cleans out urethra before sperm move through
Urethra
Penis
TesticleScrotum
Epididymis
Vas Deferens
Cowper’s Gland
Prostate Gland
Seminal Vesicle
UrethraUrethraUrethra: 1, I
Narrow tube
Sperm and urine exit body here
Urethra: 1, INarrow tube
Sperm and urine exit body here
Urethra
Penis
TesticleScrotum
Epididymis
Vas Deferens
Cowper’s Gland
Prostate Gland
Seminal Vesicle
Other VocabOther VocabWhat exits the body is referred to as:
Semen: mixture of sperm and fluids from seminal vesicles, prostate gland, & cowpers glands
Ejaculation: Semen moving out of the penis & out of the body. Series of muscular contractions.
What exits the body is referred to as: Semen: mixture of sperm and fluids from
seminal vesicles, prostate gland, & cowpers glands
Ejaculation: Semen moving out of the penis & out of the body. Series of muscular contractions.
SpermSpermSperm – male sex cellsBoys are not born with any sperm, they begin
to produce it once they produce testosterone.Each sperm contains:
1. Head: contains the nucleus (“brain of the cell”)
2. Mid-piece: wrapped in mitochondria (energy for cell)
3. Tail: a flagellum for movement (to swim)
Sperm – male sex cellsBoys are not born with any sperm, they begin
to produce it once they produce testosterone.Each sperm contains:
1. Head: contains the nucleus (“brain of the cell”)
2. Mid-piece: wrapped in mitochondria (energy for cell)
3. Tail: a flagellum for movement (to swim)
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Seminal Vesicles *Cowper’s GlandVas Deferens *EpididymisEjaculation *ScrotumSperm *SemenPenis *TestesUrethra *Prostate Gland
Seminal Vesicles *Cowper’s GlandVas Deferens *EpididymisEjaculation *ScrotumSperm *SemenPenis *TestesUrethra *Prostate Gland
Female Reproductive SystemFemale Reproductive System
Female Reproductive SystemFemale Reproductive SystemAt puberty, females produce the
hormone, estrogenProduces female secondary sex
characteristics:Increase in heightIncrease in perspirationGrowth of underarm hairIncrease in breast size
At puberty, females produce the hormone, estrogen
Produces female secondary sex characteristics:Increase in heightIncrease in perspirationGrowth of underarm hairIncrease in breast size
Female Secondary Sex Characteristics continued…Female Secondary Sex Characteristics continued…
Widening of hipsIncrease in size of reproductive
organsBeginning of menstruationFormation of mature ova (eggs)
Widening of hipsIncrease in size of reproductive
organsBeginning of menstruationFormation of mature ova (eggs)
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OvariesOvariesOvaries: 2, I
2 glandsProduce estrogen and ovaOva - female reproductive cellsAlso called “eggs”
Ovaries: 2, I2 glandsProduce estrogen and ovaOva - female reproductive cellsAlso called “eggs”
Fallopian TubesFallopian TubesFallopian Tubes: 2, I
2, four inch long tubesOva move from the ovary to the
uterus along these tubes90% of the time fertilization
(sperm finds egg) here
Fallopian Tubes: 2, I2, four inch long tubesOva move from the ovary to the
uterus along these tubes90% of the time fertilization
(sperm finds egg) here
UterusUterusUterus: 1, I (womb)
Receives and supports a fertilized ova during pregnancy
Fertilized = egg (ova) + spermWhere baby develops over 9 monthsMuscular and elastic organ (Muscle- helps
to push baby out during delivery) (Elastic- has to stretch as baby develops)
Uterus: 1, I (womb)Receives and supports a fertilized ova
during pregnancyFertilized = egg (ova) + spermWhere baby develops over 9 monthsMuscular and elastic organ (Muscle- helps
to push baby out during delivery) (Elastic- has to stretch as baby develops)
CervixCervixCervix: 1, I
Lower part of the uterus“Pin-hole” opening - menstrual
flow leaves through this openingOpening dialates (widens) when
the baby is ready to be bornConnects to the vagina
Cervix: 1, ILower part of the uterus“Pin-hole” opening - menstrual
flow leaves through this openingOpening dialates (widens) when
the baby is ready to be bornConnects to the vagina
VaginaVaginaVagina: 1, I (also called the birth canal)
Connects the uterus with the outside of the body
Muscular and elastic tubeWhere baby passes through to be
bornPassageway for menstrual flow
Vagina: 1, I (also called the birth canal)Connects the uterus with the outside
of the bodyMuscular and elastic tubeWhere baby passes through to be
bornPassageway for menstrual flow
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Reproductive SystemAdolescencePubertyHormones
Brainpop!Reproductive SystemAdolescencePubertyHormones
Menstrual CycleMenstrual Cycle*Occurs about once a month*
3 Steps:1. Ovulation2. Changes in uterus lining3. Menstrual flow
*Occurs about once a month*
3 Steps:1. Ovulation2. Changes in uterus lining3. Menstrual flow
Step 1:Step 1:Ovulation – release of a mature egg
(ova) from an ovary.
(There are 2 ovaries, but usually only one of them release an egg each month)
This may not occur on the same day each month – it is not felt.
Ovulation – release of a mature egg (ova) from an ovary.
(There are 2 ovaries, but usually only one of them release an egg each month)
This may not occur on the same day each month – it is not felt.
Step 2:Step 2:Lining of uterus builds up with blood
(oxygen & nutrients to “feed” developing baby)
Takes about 28 days to build up the lining.
Lining of uterus builds up with blood (oxygen & nutrients to “feed” developing baby)
Takes about 28 days to build up the lining.
Step 3:Step 3:If there is no sperm united with an
egg = NOT pregnant & body doesn’t need extra lining
Menstruation – or “period”, the time during which the menstrual flow leaves the body.
Menstrual flow = unfertilized egg & lining of uterus
If there is no sperm united with an egg = NOT pregnant & body doesn’t need extra lining
Menstruation – or “period”, the time during which the menstrual flow leaves the body.
Menstrual flow = unfertilized egg & lining of uterus
Menstrual flowMenstrual flowAverage length of menstrual flow = 5 days
(takes a long time b/c menstrual flow leaves through cervix, or “pin-hole” opening)
The menstrual flow may NOT occur every 28 days! ESPECIALLY in teens! Your body has not practiced this routine & it may take awhile to get used to it – this is NORMAL! It may take several months before you can calculate the # of days between your periods.
It is important to remember that a female can become pregnant at ANY TIME during the menstrual cycle!
Average length of menstrual flow = 5 days (takes a long time b/c menstrual flow leaves through cervix, or “pin-hole” opening)
The menstrual flow may NOT occur every 28 days! ESPECIALLY in teens! Your body has not practiced this routine & it may take awhile to get used to it – this is NORMAL! It may take several months before you can calculate the # of days between your periods.
It is important to remember that a female can become pregnant at ANY TIME during the menstrual cycle!
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BabiesPeriod
Brainpop!BabiesPeriod