UNIT 5 SCIENCE STUDY SHEET Flashcards
sperm
PRODUCED BY THE MALE REPRODUCTIVE SYSTEM FOR REPRODUCTION AND THERE ARE 23 CHROMOSOMES.
testes
THESE ARE THE MAIN ORGANS OF THE MALE REPRODUCTIVE SYSTEM. THESE ORGANS PRODUCE TESTOSTERONE, CAUSING MALE CHARACTERISTICS TO DEVELOP, SUCH AS FACIAL HAIR AND DEEP VOICE.
TESTES ALSO MAKE HORMONES AND THESE ARE STORED IN THE EPIDIDYMIS.
penis
THIS ORGAN DELIVERS SEMEN INTO THE FEMALE REPRODUCTIVE SYSTEM
EPIDIDYMIS
SPERM DEVELOPS IN THE EPIDIDYMIS AND LEAVE THROUGH A TUBE CALLED VAS DEFERENS. SPERM AND FLUIDS ARE CALLED SEMEN.
egg
A FEMALE SEX CELL, HAS 23 CHROMOSOMES.
ovary
It is a reprductive organ that produces eggs.
THE FEMALE REPRODUCTIVE SYSTEM
PRODUCES ESTROGEN AND PROGESTERONE, WHICH DEVELOP THE BREASTS AND WIDER HIPS.
THIS ALSO REGULATES THE DEVELOPMENT AND RELEASE OF EGGS, PREPARING THE BODY TO BE PREGNANT.
uterus
It is an organ in which fertilized egg develops into a baby.
vagina
It is a canal between the uterus and the outside of the body.
embryo
Once a cell divison occurs, the fertilization egg becomes an embryo.
Pregnancy stage 1/ 1,2 and 3 months
First Trimester
After ten weeks the Embryo is called a fetus. It has the heart, the liver, and the brain, it also has arms, legs, fingers, and toes.
Second Trimester/ 4, 5 and 6 months
Joints and bones start to form, muscles grow stronger, the fists begin to move and the fetus triples in size. Eventually the fetus could make faces, swallow, and it could also breathe.
Third Trimester/ this is 7,8 and the 9th month.
It can respond to light and sound, Brain develops further. The organs are completely functional, bones grow and harden and the lungs develop. The Fetuses eyes open at 36 weeks, the fetus is almost ready to be born.
placenta
It is a network of blood vessels that provides the embryo with oxygen and nutrients from the mother;s blood and carries away the wastes.
umbilical cord
The embryo connects to the placenta by the umbilical cord.
Fetus
After week 10 the Embryo is called a Fetus. Organs such as the heart, liver and brain form. Arms and legs, fingers and toes also form.
pathogen
It is a organism, a virus, or a protein that causes disease.
immune system
It is made up of tissues and specialize white blood cells that recognize and attack foreign substances in the body.
macrophage
It is a white blood cell that destroys pathogens by engulfing and digesting them.
T cell
It coordinates the body’s immune response, while others attack infected cells.
B cell
It makes antibodies that attach to specific antigens.
antibody
It is a specialized protein that binds to a specific antigen to tag it for destruction.
immunity
it is the ability to resist or recover from an infectious disease.
vaccine
It is a substance prepared from killed or weakened pathogens that is introduced into the body to produce immunity.
External Defenses
Skin, eye lashes, hair, sweat, finger nails, and toe nails. Your external is part of you integumentary system.
Internal Defenses
- Inflammation is when red blood flows to an injured area causing it to swell and the blood platelets form a barrower.
- It is your fever. When you get a fever it slows the growing of pathogens.
allergies challenges your immune system
It is a reaction to an harmless or a common substances.
Cancer challenges your immune system
Cancer is a group of disease in which cells divide in an uncontrolled rate.
Immune deficiency challenges your immune system
The immune system fails to develop properly or becomes weakened. For example, AIDs (Auto immune deficiency syndrome). It caused by HIV
Auto Immune disease challenges your immune system
It disease were the immune system attacks the bodies own cells. Auto immune disease. It mistakes the body cells for foreign pathogens.
