14: The Continuance of Human Life

Question 1

What are the gonads in males and females?

Answer 1

Males: testes
Females: ovaries

Gonads produce sex cells (gametes) and sex hormones.

Question 2

Where are the male gonads located?

Answer 2

Outside the body

Testes need a lower temperature to produce sperm effectively.

Question 3

What type of gamete do male gonads produce?

Answer 3

Sperm

Sperm are produced in large quantities.

Question 4

What structure regulates the temperature of the testes?

Answer 4

Scrotum

Question 5

What type of gamete do female gonads produce?

Answer 5

Ovum

Females produce a single ovum each month.

Question 6

Where do developing sperm mature and are stored?

Answer 6

Epididymis

Question 7

What is the function of the ductus deferens in males?

Answer 7

Transport sperm from the epididymis

Question 8

What is semen composed of?

Answer 8

Sperm mixed with other fluids

Question 9

How is semen released from the male body?

Answer 9

Through the urethra

Question 10

Where does the ovum develop in females?

Answer 10

Follicles in the ovary

Question 11

What carries the ovum toward the uterus?

Answer 11

Cilia in the oviduct

Question 12

What happens to the ovum if it is fertilized?

Answer 12

It may implant in the uterus

Question 13

What happens to the ovum if it is not fertilized?

Answer 13

Flows out of the body with excess uterine tissues

Question 14

What are STIs primarily classified as?

Answer 14

Viral or bacterial

Question 15

Name three examples of sexually transmitted infections.

Answer 15

• HIV/AIDS
• Hepatitis
• Chlamydia

Question 16

What triggers puberty in males?

Answer 16

Increase in GnRH production

Question 17

What hormones are released from the anterior pituitary during male puberty?

Answer 17

FSH and LH

Question 18

What hormone surge occurs during male puberty?

Answer 18

Testosterone

Question 19

What does the menstrual cycle control?

Answer 19

Maturation of an ovum and preparation of the uterine lining

Question 20

What triggers puberty in females?

Answer 20

Increase in GnRH production

Question 21

What hormones are released from the anterior pituitary during female puberty?

Answer 21

FSH and LH

Question 22

What does the decrease in hormone levels lead to in middle age for females?

Answer 22

Menopause

Question 23

What can sexually transmitted infections damage?

Answer 23

Reproductive organs

They can also block the passage of ova and sperm.

Question 24

What does the female reproductive system include?

Answer 24

• Ovaries
• Ovarian duct
• Uterus
• Vagina
• Vulva

Question 25

What do gonads produce in both sexes?

Answer 25

* Gametes * Sex hormones

Question 26

What does the male reproductive system include?

Answer 26

* Testes * Epididymis * Ductus deferens * Glands that add fluids to semen * Penis

Question 27

What controls the monthly menstrual cycle?

Answer 27

Hormone interactions ## Footnote This cycle continues until menopause in middle age.

Question 28

What triggers maturation of sex organs at puberty?

Answer 28

Hormones

Question 29

What does a hormone feedback system maintain?

Answer 29

A relatively constant level of sperm production

Question 30

What are the main female sex hormones?

Answer 30

* Estrogen * Progesterone

Question 31

During sexual intercourse, where are sperm deposited?

Answer 31

In the female reproductive tract

Question 32

What is the main male sex hormone?

Answer 32

Testosterone

Question 33

Fill in the blank: The ovaries produce a limited number of _______.

Answer 33

eggs

Question 34

True or False: The testes produce small quantities of motile sperm.

Answer 34

False

Question 35

What continues for life in males?

Answer 35

Sperm production