UNIT 2 - KA1

Question 1

Name the parts in the male reproductive system (8 parts)

Answer 1

Bladder , seminal vesicles, prostate gland, sperm duct, testis, scrotum, urethra

Question 2

Draw a diagram showing the male reproductive system with labels

Answer 2

Check jotter for answer

Question 3

What are sperm (spermatozoa)

Answer 3

Sperm (spermatozoa) are male gametes

Question 4

Where are sperm produced and howb

Answer 4

Continually produced in the testes by the process of meiosis

Question 5

Which cells are sperm produced from

Answer 5

The sperm are produced from germline cells

Question 6

Where are germline cells found

Answer 6

The sperm are produced from germline cells found in the seminiferous tubules

Question 7

What do seminiferous tubules unit to form

Answer 7

Seminiferous tubules which unite to form coiled tubes that connect with sperm ducts

Question 8

Draw a diagram of the close up of the testis

Answer 8

Check jotter

Question 9

Draw a diagram of a close up of seminiferous tubules

Answer 9

Check jotter

Question 10

What is the function of interstitial cells

Answer 10

To produce testosterone

Question 11

What do sperm require in order to swim to the egg and fertilise it

Answer 11

In order to swim to the egg (ovum) and fertilise it, sperm require energy as well as fluid medium to swim in

Question 12

In what form are the sperm released from in the man

Answer 12

The sperm are released from the man in a milky coloured liquid called semen

Question 13

Where does the fluid in semen come from

Answer 13

The fluid in the semen mainly comes from seminal vesicles and the prostate gland

Question 14

What are the accessory glands

Answer 14

Seminal vesicles and prostrate gland

Question 15

What is the importance of the secretions from the seminal vesicles and prostate gland to fertilisation

Answer 15

The prostate gland and seminal vesicles secrete fluids that maintain the mobility and viability of the sperm

Question 16

Name the parts in the female reproductive system (7)

Answer 16

Ovary, uterus, vagina, cervix, endometrium, muscular coat, oviduct

Question 17

Mark on the female reproductive system where fertilisation takes place

Answer 17

Oviduct

Question 18

What are the steps that happen to the egg when fertilisation take place?

Answer 18

• the fertilised egg is known as a zygote
• divides and develops into a ball of cells (blastocyst)
• now known as an embryo
• differentiation of cells within the embryo
• implantation of embryo into uterus

Question 19

Draw a diagram showing the changes occurring in an ovary during the menstrual cycle

Answer 19

Check jotter for answer

Question 20

What are eggs (ova)?

Answer 20

Eggs (ova) are female gamete cells formed from germline cells inside the ovary (by MEIOSIS)

Question 21

What does the menstrual cycle start with

Answer 21

Inside the ovary are immature eggs at various stages of development

Question 22

What is the function of the follicle surrounding the egg

Answer 22

Each egg is surrounded by a follicle which functions to protect the egg and secrete the hormone oestrogen

Question 23

What happens to the egg during the first half of the menstrual cycle

Answer 23

During the first half of the menstrual cycle the follicle gradually develops, filling with fluid

Question 24

What happens to the follicle at ovulation

Answer 24

At ovulation the follicle bursts releasing the egg

Question 25

What happens during the second half of the menstrual cycle

Answer 25

The follicle then changes into a structure known as the corpus luteum during the second half of the menstrual cycle which secretes the hormone progesterone

Question 26

What happens to levels of progesterone when corpus luteum is formed in the second half of the menstrual cycle

Answer 26

The corpus luteum is degenerating so levels of progesterone are falling

Question 27

What is the function of testosterone

Answer 27

- stimulates the production of sperm / gametes - triggers the prostate gland and seminal vesicles to produce secretions