Human Reproduction And Genetics

Question 1

Ovaries

Answer 1

Store and release eggs.

Question 2

Ovulation

Answer 2

An egg is released from the ovary an average of every 28 days.

Question 3

The egg is released

Answer 3

On day 13-15 of the menstrual cycle and it passes along the fallopian tube to the uterus.

Question 4

Menstruation/Period

Answer 4

The lining and a small amount of blood pass out through the vagina (day 1-5)

Question 5

Menopause

Answer 5

Signals the end of a female’s ability to reproduce and also the end of her menstrual cycle. It happens at different ages for different people, typically in the late 40’ or early 50’s

Question 6

Testes

Answer 6

Produces sperm

Question 7

Scrotum

Answer 7

The scrotum is where the testes are, it is located outside the body to ensure the temperature is lower than body temperature for healthy sperm.

Question 8

Epididymis

Answer 8

The epididymis is a coiled tube on the outside of each testis that stores sperm and allows them to mature fully.

Question 9

Puberty

Answer 9

Describes when the body starts becoming sexually mature (reproductive organs develop). It normally happens between the ages of 10 and 16.

Question 10

Male puberty

Answer 10

In males, sex hormones (testosterone) are released causing the voice to deepen, hair grows around sex organs, chest, armpits and face.

Question 11

Female puberty

Answer 11

In females when the sex hormones (oestrogen and progesterone) are released the breasts develop, hips widen and hair begins to grow on the body.

Question 12

Female puberty 2

Answer 12

The first egg is released from the ovaries which leads to the first period occurring. An egg will be released every month until menopause or pregnancy.

Question 13

During intercourse the man’s

Answer 13

Penis fills with blood and becomes hard enough to be placed inside the woman’s vagina.

Question 14

Semen

Answer 14

A mixture of sperm cells and seminal fluid called semen is released into the vagina.

Question 15

The sperm swim

Answer 15

Up the uterus and into the fallopian tubes

Question 16

Fertilisation

Answer 16

If an egg is present in the fallopian tube and a couple have sexual intercourse, then one of the sperm calls may fuse with it.

Question 17

Zygote

Answer 17

Egg and sperm fuse to form a single zygote.

Question 18

Embryo

Answer 18

Attaches to the lining of the uterus (implantation) grows more, and after 8 weeks looks like a human.

Question 19

Pregnancy

Answer 19

Average length of human pregnancy is 40 weeks

Question 20

Genetics

Answer 20

The study of the inheritance of Characteristics.

Question 21

Inheritable characteristics

Answer 21

Many physical characteristics such as eye colour and shape of ears were inherited from your parents.

Question 22

Chromosomes

Answer 22

The nucleus of each sex cell (gamete) contains 23 thread like structures called chromosomes.

Question 23

Chromosomes are made of..

Answer 23

Protein + DNA. These chromosomes carry genes.

Question 24

Genes

Answer 24

Chemicals found on chromosomes that pass on information from parents to children.

Question 25

DNA

Answer 25

Deoxyribonucleic acid

Question 26

46 chromosomes

Answer 26

When an egg and sperm cell fuse (each has 23 chromosomes) they give the individual they are creating 46 chromosomes

Question 27

Dominant

Answer 27

The stronger gene is called the dominant gene.

Question 28

Recessive

Answer 28

The weaker gene is called recessive

Question 29

Umbilical cord

Answer 29

A tube that joins the embryo to the placenta.

Question 30

Placenta

Answer 30

Is rich in blood vessels. It is here at the placenta that food and oxygen from the mothers blood pass into the baby’s blood

Question 31

Lactation

Answer 31

The production of breast milk.

Question 32

Colostrum

Answer 32

The first three days of milk is called colostrum-it’s very nutritious, and helps protect the baby from infection.