chpt 16 : human sexual reproductive system Flashcards

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1
Q

what is reproduction

A

process of producing offspring

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2
Q

how is genetic material from parents distributed to their kids

A

50% by mom 50% by dad

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3
Q

how is traits from parents distributed to their kids

A

random

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4
Q

male puberty period

A

12-16

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5
Q

female puberty period

A

10-14

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6
Q

what happens to the reproductive system during puberty for male and female

A

male : testes grow larger and produce male sex hormones and male sex cells
female : ovaries begin to produce female hormones and female sex cells, ovulation and menstruation starts

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7
Q

what are the physical changes for both male and female during puberty

A

male : height and weight increases ,body becomes more muscular, armpit hair, facial hair, pubic hair starts growing
female : height and weight increases, breasts grow larger, hips become rounder and wider, armpit hair and pubic hair starts growing

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8
Q

how is sperm transported

A

testes -> sperm duct -> urethra

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9
Q

what does the sperm duct do

A

it is a tube that transport sperm from the testes to the urethra

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9
Q

what does the scrotum do

A

it is a bag of skin that protects and holds the testes l

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9
Q

what does the sex glands do

A

it releases fluids that contains nutrients that provide sperms with energy for them to swim

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10
Q

what does the penis do

A

it is a male sex organ which ejects sperm and deposits them into the vagina during sexual intercourse

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11
Q

what does the testes do

A

it produces male sex hormones and male sex cells

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12
Q

what does the urethra do

A

tube that carries sperm from the sperm duct through the penis to outside of the body, it also allows urine to be removed

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13
Q

what does the oviduct do

A

it is the site of fertilisation, eggs from the ovary are pushed to the uterus

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14
Q

what does the uterus do

A

it is where the embryo implants itself, develops and is protected

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15
Q

what does the ovary do

A

the ovary produces female sex hormones and eggs w

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16
Q

what does the vagina do

A

it is where sperm from the penis is deposited during sexual intercourse

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17
Q

what does the cervix do

A

it is the narrow neck of the uterus, widens during child birth

18
Q
A
19
Q

how often are sperm produced

A

everyday since the start of puberty

20
Q

how often are eggs produced

A

every 28 days from the start of menstruation until menopause

21
Q

describe fertilisation in the human sexual reproduction system

A

the penis deposits sperms into the vagina and travels up to the uterus and oviduct. the fertilised eggs then moves down the oviduct to the uterus and cell division occurs. an embryo is formed in a few hours and it sinks into the uterine lining.

22
Q

how long does a menstrual cycle last

A

28 days

23
Q

when does ovulation occur

A

14 days

24
Q

what comes out during menstruation

A

dead ovum, uterine lining and blood

25
Q

how long does sperms survive

A

3 to 5 days

26
Q

how long does eggs survive

A

1 day

27
Q

reason for late / early menstruation

A

poor nutrition, stress, illness

28
Q

abstinence

A

prevent STI, fertilisation cannot occur if sperm is not deposited into the vagina.
prevents fertilisation

29
Q

rhythm method

A

does not have sexual intercourse during fertile period , fertilisation cannot occur if there is no mature egg present
prevents fertilisation

30
Q

birth control pill

A

contain hormones that prevent ovulation

31
Q

male /female condom

A

prevents deposition of sperms into the vagina
prevents fertilisation

32
Q

diaphragm

A

prevent sperms from entering the uterus reaching the oviduct
orevents fertilisation

33
Q

intra uterine device (IUD)

A

inserted into the uterus by a doctor, alters the mucus of the cervix and lining of the uterus to prevent implantation and fertilisation

34
Q

spermicide

A

a chemical that kills sperms, there are no sperms that can reach the oviduct
prevents fertilisation

35
Q

two methods too prevent pregnancy

A

temporary contraceptive method
permanent contraceptive method

36
Q

types of permanent contraceptive methods

A

vasectomy, tubal ligation

37
Q

vasectomy

A

cut and tie middle sections of sperm ducts, sperm cannot move from the testes to the penis, no sperm deposited into the vagina
prevents fertilisation

38
Q

tubal ligation

A

cut and tie mid portions of oviducts and then clipping them up, eggs cannot pass along the oviduct to the uterus , sperm and egg cannot meet in the oviduct
prevents fertilisation

39
Q

what does abortion cause

A

excessive bleeding, damage uterus leading to infertility, may develop infection

40
Q

how are STI spread

A
  • sexual intercourse
  • blood transfusions
    organ transplant
    tattooing
    sharing of needle for drug use
    ear piercing
    acupuncture
41
Q

types of STI caused by bacteria (curable with antibiotics

A

gonorrhoea, syphilis

42
Q

symptoms of gonorrhoea

A

burning sensation when urinating
white/yellow pus discharged from the penis/vagina
long term pelvic or abdonminal pain
infertility if left untreated

43
Q

symptoms of syphilis

A

(early stages): sores on the mouth and reproductive organs, weight loss, patchy hair loss
(later stages): blindness, infertility, paralysis, major brain and heart damage

44
Q

AIDS

A

AIDS (acquired immune deficiency syndrome) is caused by a virus called the human immunodeficiency virus (HIV)

the virus attacks white blood cells which help the body fight infections. immune system becomes weak and unable to fight disease. as a result, the person easily gets infections and othe r cancers. there is NO cure for AIDS.

45
Q

what is the increased in the world’s population is due to

A

medical advancement, increased food production, improved transportation and improved sanitation