Transcript The Reproductive System

THE REPRODUCTIVE SYSTEM
INTRODUCTION TO THE REPRODUCTIVE SYSTEM
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The major function of the reproductive system is to ensure
survival of the species. Other systems in the body, such as the
endocrine and urinary systems, work continuously to maintain
homeostasis for survival of the individual. An individual may live
a long, healthy, and happy life without producing offspring, but if
the species is to continue, at least some individuals must
produce offspring.
Within the context of producing offspring, the reproductive
system has four functions:
To produce egg and sperm cells which are called gamete
The egg and sperm cells combine to produce a zygote (offspring)
To transport and sustain these cells
To nurture the developing offspring
To produce hormones
The Male Reproductive Systems:
 The function of the male reproductive system
is to produce and deliver sperm.
Sperm are made in the testes through the process
of meiosis.
In human males, sperm are haploid & have 23
chromosomes
The Male Reproductive System Continued
 testes: 2 walnut sized organs that make sperm
 scrotum: 2 pouches that each contain one testis
outside the body.
 vas deferens – tube that sperm travel through
when they are released from each testis.
 urethra – tube that connects the 2 vas deferens
and travels through the penis.
 Both sperm & urine travel through the urethra
THE MALE REPRODUCTIVE SYSTEM CONTINUED
THE FEMALE REPRODUCTIVE SYSTEM
The Purpose of the Reproductive System
1.
To produce eggs
2.
To receive sperm
3.
Provide an environment that a baby can develop in
THE FEMALE REPRODUCTIVE SYSTEM
How are eggs produced & released in females?
ovaries: 2 ovaries are where eggs are made through meiosis. 1 egg is released each
month called ovulation
fallopian tube: tube the egg travels through once it is released from the ovary. (also
called oviduct) there are 2 fallopian tubes.
uterus: fist sized organ where an embryo grows.
vagina: passageway to the outside of the body
- baby is born through this passageway and
sperm are deposited here
THE FEMALE REPRODUCTIVE SYSTEM
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sics_female_repro.html
YOUR ENDOCRINE SYSTEM
- The endocrine system is a
collection of special organs in
the body that produce
hormones and send them
directly in to the blood
stream.
- Organs of the endocrine
System: (Called Glands)
- pituitary – regulates
growth (located in the
brain)
- thyroid – regulates
metabolism (found in the
neck)
- adrenal – regulate hormone
that helps humans deal
with stress (adrenaline)
(located along the kidneys)
- ovaries and testes –
regulate hormones involved
in the expression of sexual
characteristics