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Conversation of Female Reproductive SystemFull description
Reproductive System lecture slides by McGrawHill. Disclaimer: I do not own this material. I uploaded this for reference.
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Distance Learning Program DLP Science Grade 5 Module 1 Human Reproductive System Mala Reproductive System Female Reproductive System DepEd BEAM Distance Learning Program Main Parts of the...
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Cancer is a disease in which abnormal cells divide without control and are able to invade other tissues. Uterine cancer is the most common cancer occurring in reproductive system of women. Uterine cancer begins when healthy cells in the uterus change
Cancer is a disease in which abnormal cells divide without control and are able to invade other tissues. Uterine cancer is the most common cancer occurring in reproductive system of women. Uterine cancer begins when healthy cells in the uterus change
This project provides the facility to all users to send and receive the courier. They can get the information of the status of the courier. System development is also considered as a process…Full description
Reproduction Prepar Pre pared ed by: by: Nabeel Nabeel Udd Uddin in
INTEGRATED INTEGRA TED SCIENCE SCIENCE
Types Sexual Asexual
Sexual Reproduction in plants A
B C
D E
G F I H
Structure
Funuction
Stigma
?
Anther
?
Filament
?
Style
?
Ovary
?
Ovule
?
Petal
?
Pollination
Definition
Transfer of pollen from the anther to the stigma
Types of Pollination
Self Pollination
SAME PLANT
Cross pollination
DIFFERENT PLANT
What type of pollination is shown?
Wind vs. Insect pollinated Flowers Wind Pollinated
Insect Pollinated
Odorless, no nectar
Sweet scented, produce nectar
Pollen grain: Smooth, small, light Pollen grain: Large, with sticky weight surface Stigma is feathery
Stigma smooth and sticky
Stigma and anther outside of flower
Stigma and anther inside flower
Wind/Insect pollinated?
Fertilization
Stigma is pollinated with pollen grains
A pollen tube grows down the style
Male nucleus passes down the pollen tube
Pollen tube enters ovary via micropyle
Male nucleus fuses with female nucleus in ovary
Ovule develops into the seed
Ovary develops into the fruit
Asexual reproduction in plants
1.Vegetative propagation
a new plant grows from a vegetative part, usually a stem, of the parent plant
New plant is a clone
E.g. Runners, rhizomes
2. Grafting
In grafting a piece of plant is grafted into a root stock from another plant. After a while, they will grow together.
Male Reproductive system
Function of Male reproductive parts Structures/Parts
Scrotum Testes-located
Function
Holds the testes behind penis outside
body
(lower -produce male sex hormones-testosterone
temperature for sperm production)
-produce male sex cells-sperms
Epididymis (coiled tube above testes)
-stores sperm
Vas deferens/ sperm duct
-Transport sperm away from testes
Prostate gland
-produce fluid that serves as medium for sperm to travel and provide nutrients. Sperm + Fluid = semen
Seminal vesicle
-Seminal vesicles help nourish the sperm; secretes fructose (any
Urethra
particular reason?)
-Sperms exit the body via urethra
Female Reproductive System
Function of Female reproductive parts Structures/Parts
Function
Ovaries
-produce eggs
-two ovaries are present
- produce oestrogen and progesterone
Fallopian tube/ Oviduct
-eggs are release in oviduct
-lined with cilia
- it is where fertilization takes place
Uterus / Womb
- Fertilized egg becomes implanted on walls of uterus
Vagina
-it is the birth canal -receives sperms -allow vaginal discharge (during maturation)
Menstrual Cycle
Hormones in Menstrual Cycle
Oestrogen
Cause uterus lining to thicken with blood vessels before ovulation
Progesterone hormone keeps the lining of the walls thick and supplied with blood, in case an egg is fertilized
If egg is not fertilized, progesterone secretion stops. The uterus lining breaks down. Menstruation then occurs.
Fertilization
Fertilization
Define fertilization
Comparison: How are gametes brought together in plants?
What feature of sperm cell allows it to carry out it’s function?
Development of embryo and foetus
placenta develops after implantation It allows exchange of nutrients and waste products between mother and embryo (without mixing of any blood) umbilical cord connects baby to placenta (transport nutrients and oxygen to fetus) Embryo is surrounded by amnion filled with amniotic fluid. This protects the baby
Amniotic sac
The amniotic sac is a thin membrane filled with serous fluid enclosing the foetus
