Male reproductive system

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

Welcome to this lesson!

• Please take your seat
  
• Take off your coat
  
• Get you notebook , book and pen

What is the difference between primary and secondary sexual characteristics?

Which of the following is NOT a secondary sexual characteristic?

1. Menstruation
2. Pubic hair
3. Sex hormones
4. Muscle growth

Male primary sex
characteristics

Male secondary sex
characteristics

What animal has the biggest penis compared to its body?

1. Barnacle
2. Salamander
3. Whale
4. Elephant

What animal has two penises?

1. Owl
2. Shark
3. Snake
4. Platypus

What is the average size of the penis of a duck?

1. 3 cm
2. 7 cm
3. 15 cm
4. 20 cm

Internal male reproductive system

•  Testes: 
• Makes the sperm cells
• Scrotum: 
• Protects testes and has a lower temperature, which is good for sperm cell production. 
• Epididymis: 
• Temporary storage for sperm cells.
• Sperm duct: 
• Transports the sperm cells.

Internal male reproductive system

• Seminal vesicle: 
• Adds fluid with nutrition to the sperm cells. 
• Prostate: 
• adds fluid to sperm cells. 
• Fluids + sperm cells =  called...?
• semen.
•  Urethra: 
• Transports urine + semen to outside.

Sperm or semen?

-Testes produce sperm cells.

-Epididymes store sperm cells-->release during orgasm.

-seminal vesicles+ prostate add fluid and nutrients--> activate sperm.

Semen = Fluid + sperm cells 

Erections

-Blood vessel to spongy erectile tissue relaxes.

-Blood fills erectile tissue-->penis becomes erect (hard).

-Erections can happen any time, uncontrolled. Especially during puberty.

- Tip from the internet on how to get rid of an unwanted boner: Flex (contract) your thigh muscles for atleast 30 seconds

Ejaculation

-Ejaculation is male orgasm.

-Amount of semen: average tea spoon of semen (100-400 million sperm cells)

glans    foreskin

erictile tissue

sperm duct

urethra

epididymis

testis

scrotum

prostate

seminal vesicle

Through which parts, and in what order do sperm cells exit the male body

glans    foreskin

5

2

4

1

3

Question box: Ask any questions you have

4.2 Make questions 

Workbook 2, 3, 4, 

or

online 1, 2, 3