UNIT 5 SCIENCE STUDY SHEET

Question 1

 sperm

Answer 1

PRODUCED BY THE MALE REPRODUCTIVE SYSTEM FOR REPRODUCTION AND THERE ARE 23 CHROMOSOMES.

Question 2

 testes

Answer 2

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.

Question 3

 penis

Answer 3

THIS ORGAN DELIVERS SEMEN INTO THE FEMALE REPRODUCTIVE SYSTEM

Question 4

EPIDIDYMIS

Answer 4

SPERM DEVELOPS IN THE EPIDIDYMIS AND LEAVE THROUGH A TUBE CALLED VAS DEFERENS. SPERM AND FLUIDS ARE CALLED SEMEN.

Question 5

 egg

Answer 5

A FEMALE SEX CELL, HAS 23 CHROMOSOMES.

Question 6

 ovary

Answer 6

It is a reprductive organ that produces eggs.

Question 7

THE FEMALE REPRODUCTIVE SYSTEM

Answer 7

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.

Question 8

 uterus

Answer 8

It is an organ in which fertilized egg develops into a baby.

Question 9

 vagina

Answer 9

It is a canal between the uterus and the outside of the body.

Question 10

 embryo

Answer 10

Once a cell divison occurs, the fertilization egg becomes an embryo.

Question 11

Pregnancy stage 1/ 1,2 and 3 months
First Trimester

Answer 11

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.

Question 12

Second Trimester/ 4, 5 and 6 months

Answer 12

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.

Question 13

Third Trimester/ this is 7,8 and the 9th month.

Answer 13

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.

Question 14

 placenta

Answer 14

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.

Question 15

 umbilical cord

Answer 15

The embryo connects to the placenta by the umbilical cord.

Question 16

Fetus

Answer 16

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.

Question 17

 pathogen

Answer 17

It is a organism, a virus, or a protein that causes disease.

Question 18

 immune system

Answer 18

It is made up of tissues and specialize white blood cells that recognize and attack foreign substances in the body.

Question 19

 macrophage

Answer 19

It is a white blood cell that destroys pathogens by engulfing and digesting them.

Question 20

 T cell

Answer 20

It coordinates the body’s immune response, while others attack infected cells.

Question 21

 B cell

Answer 21

It makes antibodies that attach to specific antigens.

Question 22

 antibody

Answer 22

It is a specialized protein that binds to a specific antigen to tag it for destruction.

Question 23

 immunity

Answer 23

it is the ability to resist or recover from an infectious disease.

Question 24

 vaccine

Answer 24

It is a substance prepared from killed or weakened pathogens that is introduced into the body to produce immunity.

Question 25

External Defenses

Answer 25

Skin, eye lashes, hair, sweat, finger nails, and toe nails. Your external is part of you integumentary system.

Question 26

Internal Defenses

Answer 26

1. Inflammation is when red blood flows to an injured area causing it to swell and the blood platelets form a barrower.
2. It is your fever. When you get a fever it slows the growing of pathogens.

Question 27

allergies challenges your immune system

Answer 27

It is a reaction to an harmless or a common substances.

Question 28

Cancer challenges your immune system

Answer 28

Cancer is a group of disease in which cells divide in an uncontrolled rate.

Question 29

Immune deficiency challenges your immune system

Answer 29

The immune system fails to develop properly or becomes weakened. For example, AIDs (Auto immune deficiency syndrome). It caused by HIV

Question 30

Auto Immune disease challenges your immune system

Answer 30

It disease were the immune system attacks the bodies own cells. Auto immune disease. It mistakes the body cells for foreign pathogens.