Biology 314
Male and Female
Reproduction Systems
Time Frame
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Introduction
Puberty for males and females (physiological
and psychological changes)
Male reproduction system
Female reproduction system
Projects
Test
Introduction
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Informed decisions regarding your sexuality
Puberty
The physiological and psychological changes that
occur from childhood to adolescence
Boys enter usually around 14; girls at 12
For boys, this means that their testicles begin
producing semen and they ejaculate during a wet
dream or while masturbating
For girls this means that their ova have matured and
are ready to be released and they begin
menstruating
This means that you can create offspring
Physiological Changes
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Males
Voice deepens
Grows body hair (armpits,
limbs, pubic area, chest
etc.).
Genital organs undergo
physical changes (enlarging
of the testicles and penis)
Spontaneous errections
Wet dream can occur
Testicles start producing
sperm
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Females
Breasts increase in size
Grows pubic hair and
underarm areas
Hips widen
Genital organs undergo
physical changes
Begins her menstrual cycle
Psychological Changes
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Males
Physical attraction
Sexual desire (libido)
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Females
Physical attraction
Sexual desire (libido)
Need for autonomy
Sense of responsibility
regarding her ability to
reproduce
Causes of Puberty
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These changes are controlled by hormone
secreting (released) glands.
A hormone is a chemical substance that is
released into the bloodstream and stimulates
the functioning of an organ
Can be thought of as a chemical messenger
from one cell (or group of cells) to another
Pituitary Gland
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1)
2)
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Located at the base of the brain
Secretes hormones regulating homeostasis
Secretes two hormones directly related to
the onset of puberty:
FSH (follicle stimulating hormones
LH (luteinizing hormones)
FSH and LH stimulate the ovaries to
secrete estrogen and progesterone and
thus initiate the menstrual cycle
Which glands secrete which hormones
in females?
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Gland
FSH
LH
Estrogen
Progesterone
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Hormone
Pituatary
Pituatary
Ovaries
Ovaries
Male Hormone
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The hormones of FSH and LH are also secreted by
the pituitary gland
The testicles are secreted by the hormone of
androgens.
The most active of which is testosterone and is
essential to the production of sperm
In women, the action of the pituitary hormones is
cyclical. In men, the action of these hormones is
contrast.
The Male Genital
Male Reproduction System
The Function of the Penis
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The penis is the copulatory (union of the external
sex) organ of the males. When the male is sexually
aroused, the penis becomes erect and ready for
intercourse. Erection is achieved because blood
sinuses within the erectile tissue of the penis
become filled with blood. The arteries of the penis
are dilated while the veins are passively compressed
so that blood flows into the erectile tissue under
pressure.
Used for excretion of liquids as well as sexual
intercourse
Path of Sperm to Ejaculation
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Testicles - epididymes  vasa deferentia
 ejaculatory ducts  urethra  outside the
body
Ejaculation Animation; click here!
Female Genitalia
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The main structures of the female genitalia
include:
The genital passages or tracts
The ovaries
The genital passages include
The Fallopian tubes
The uterus
The vagina
A picture is worth a 1000 words!
Solutions Stencil
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1a) the ducts connecting the ovaries to the
uterus?
The Fallopian tubes
b) glands that produce the egg
Ovaries
C) place where the embryo (fertilization takes
place) and develops
Uterus
Stencil Solution
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D) pear shaped / many blood vessels /
located in the pelvic area
Endometrium
e) tube that receives the semen during
intercourse
Vagina
F) Place where fertilization takes place
Ampulla
Stencil Solutions
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g) Place where the fertilized egg is implanted
Uterus
h) structures that secrete hormones
Ovaries
Sperm Meet Egg!
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Cute Video – Click here
Fallopian Tubes