Unit 2- Reproduction chapters 8/9/10

Question 1

Where sperm are made in the testes

Answer 1

Seminiferous tubule

Question 2

Where testosterone is made in the testes

Answer 2

Interstitial cells

Question 3

Name two glands that add secretions to semen

Answer 3

1. Prostate gland

2. Seminal vesicle

Question 4

What is the function of FSH in males

Answer 4

Promotes sperm production

Question 5

What is the function of FSH in females

Answer 5

Causes a follicle to mature in the ovary

Question 6

What is the function of ICSH in males

Answer 6

To stimulate the production of testosterone from interstitial cells

Question 7

Give three functions of oestrogen in the menstrual cycle

Answer 7

1. Causes endometrium to thicken
2. Inhibits further FSH production
3. Causes a surge in LH

Question 8

What is the function of progesterone?

Answer 8

The development and vascularisation of the endometrium

Question 9

which structure produces FSH and LH

Answer 9

Pituitary gland

Question 10

which structure produces Oestrogen

Answer 10

Follicle in ovary

Question 11

which structure produces Progesterone

Answer 11

Corpus luteum in ovary

Question 12

What causes the degeneration of the corpus luteum?

Answer 12

Fall in LH levels

Question 13

The term that describes how a female is only fertile for a few days each month

Answer 13

Cyclical fertility

Question 14

Describe how two types of fertility drug work

Answer 14

1. Drugs that prevent the negative feedback effect of oestrogen on FSH secretion
2. Drugs that mimic FSH and LH and stimulate ovulation

Question 15

what is Artificial insemination

Answer 15

1. Several samples of semen are collected over a period of time.
2. The semen is put into the uterus of a female

Question 16

The term that for the process of taking the head of the sperm into a needle and injected into an egg

Answer 16

Intra-cytoplasmic sperm injection (ICSI)

Question 17

describe the process of In-vitro fertilisation (IVF)

Answer 17

1. Surgical removal of eggs from ovaries after hormone stimulation.
2. Incubation of zygotes
3. Implantation of the embryos into the uterus.

Question 18

A combination of synthetic Oestrogen and progesterone that mimic negative feedback preventing the release of FSH/LH and preventing ovulation.

Answer 18

Chemical contraception

Question 19

Term for before birth screening

Answer 19

ante-natal screening

Question 20

What is the function of an anomaly scan?

Answer 20

Detects serious physical problems.

Question 21

What is the function of a dating scan?

Answer 21

To determine the due date of the baby

Question 22

Term for tests used to detect the normal physiological changes during pregnancy

Answer 22

biochemical tests

Question 23

Term for removal of a Sample of amniotic fluid to determine the karyotype of the baby

Answer 23

Amniocentesis

Question 24

Term for removal of a Sampling of placental tissue to determine the karyotype of the baby

Answer 24

Chorionic villus sampling

Question 25

State an advantage of using chorionic villus sampling over amniocentesis

Answer 25

Can be performed earlier in pregnancy

Question 26

State a disadvantage of using chorionic villus sampling over amniocentesis

Answer 26

Higher chance of a miscarriage

Question 27

How is a baby with PKU treated?

Answer 27

Put on a diet without phenylalanine

Question 28

Huntingtons disease is an autosomal dominant condition. Show a cross between a person with Huntingtons (Hh) and an unaffected person.

Answer 28

H h
h Hh hh
h Hh hh
50% chance of having Huntingtons

Question 29

Colour blindness is a sex linked recessive condition. Show a cross between an unaffected male and a carrier female.

Answer 29

XC Y
XC XC XC XC Y
Xc XC Xc Xc Y
25% chance of colour blindness

Question 30

Cystic fibrosis is an autosomal recessive condition. Show a cross between two carriers.

Answer 30

C c
C CC Cc
c Cc cc
25% chance of having cystic fibrosis