reproductive system

Question 1

what function the reproductive system has in our bodies?​

Answer 1

to produce egg and sperm cells. to transport and sustain these cells. to nurture the developing offspring.

Question 2

what are testes?

Answer 2

testes are the main organs of the male reproductive system.​

the testes produce testosterone, the male sex hormone.​

the testes also make sperm.​

Question 3

what is sperm?

Answer 3

sperms are the male cells that are used for reproduction. each sperm cell carries 23 chromosomes.​

matured sperm are stored in the epididymis.

Question 4

what is a penis?

Answer 4

the penis is the organ that delivers semen into the female reproductive system.​

Question 5

definition of “vas deference”?

Answer 5

the sperm duct that connects the epididymis to the urethra.​

Question 6

chromosomes?

Answer 6

sperm can have either an X chromosome or a Y chromosome. if a sperm with an X chromosome fertilizes the egg, the new cell will have two X chromosomes. one came from the father’s sperm and one came from the mother’s egg.​

Question 7

what is the female reproductive system’s job?

Answer 7

the female reproductive system produces hormones and eggs, and provides a place to nourish a developing human.​

Question 8

what is an ovary?

Answer 8

an ovary is the female reproductive organ that produces eggs.​

Question 9

what is an egg?

Answer 9

an egg is the female sex cell. Egg cells have 23 chromosomes, just like the sperm.​

Question 10

what are the hormones produced by the female reproductive system?

Answer 10

estrogen and progesterone are sex hormones produced by the female reproductive system. these hormones control the development of female characteristics, regulate the development and release of eggs, and prepare the body for pregnancy.​

Question 11

how many eggs are released in an average women’s life?

Answer 11

in a female’s life time, about 400 eggs will mature and be released from the ovaries.​

Question 12

chromosomes?

Answer 12

an egg will always have an X chromosome, since the woman’s sex chromosome pair only has Xs. if a sperm with an X chromosome fertilizes the egg, the new cell will have two X chromosomes. one came from the father’s sperm and one came from the mother’s egg.​

Question 13

what is the mensuration cycle?

Answer 13

the menstrual cycle which lasts about a month refers to the changes that occur in a woman’s reproductive system. these changes produce an egg, release the egg, and prepare the body for pregnancy.​

Question 14

what happens during the monthly cycle?

Answer 14

about halfway through the cycle, an egg released from the ovary travels through the fallopian tube to the uterus.​

the uterus is the organ in which a fertilized egg develops into a baby.​

a baby passes through the vagina at birth.​

if an egg is not fertilized, it is shed with the lining of the uterus. this monthly discharge of blood and tissue from the uterus is known as menstruation.​

Question 15

what happens during fertalization?

Answer 15

during fertilization, a sperm enters an egg and the two combine to form one cell. the fertilized egg become an embryo. if more than one sperm enter the egg, multiple identical embryo can form.​

Question 16

steps?

Answer 16

the egg is released from the ovary​

the egg is fertilized in the fallopian tube by a sperm​

the embryo implants into the lining of the uterus.​

​

Question 17

what are the stages of pregnancy?

Answer 17

first Trimester –
soon after implantation, the placenta begins to grow. the embryo connects to the placenta by the umbilical cord. after 10 weeks, the embryo is called a fetus.​

second Trimester –
during this stage, joints and bones start to form and the fetus’s muscles grow stronger.
the fetus starts to make movement the mother can feel, and can breath and swallow toward the end of this trimester.​

third trimester -
the fetus can respond to light and sound outside the uterus. The organs become fully functional.

by week 32, the fetus’s eyes can open and close. the fetus is almost ready to be born after 36 weeks. a full-term pregnancy usually lasts about 40 weeks.​

Question 18

stages of human development

Answer 18

infancy is the stage from birth to age 2 when babies grow quickly and baby teeth appear. the nervous system develops and babies start to walk. many babies begin to say words by age 1.​

childhood lasts from age 2 to puberty. baby teeth are replaced by permanent teeth. children learn to speak fluently and their muscles become more coordinated.​

adolescence is the stage from puberty to adulthood. In most boys, puberty occurs between the ages of 9 and 16. in most girls, puberty is between the ages of 9 and 15.​

adulthood – a person reaches physical and emotional maturity during this period.​

a young adult is about age 20 to age 40.​

middle age is between 40 and 65 years old.​

an older adult is a person more than 65 years old.​

Question 19

how to calculate growth?

Answer 19

to calculate growth rate, divide the difference in height by the difference in age.
ex:
(102 cm – 72 cm) / (5 years – 1 year) = 8 cm per year.​