Lecture 34: Male Reproductive System I

Question 1

The reproductive system greatly differs between what?

Answer 1

Males and females

Question 2

What are gonads?

Answer 2

Organs where gametes (sex cells) are produced

Question 3

What are the male and female gonads respectively?

Answer 3

Testes and ovaries

Question 4

What do testes produce?

Answer 4

Spermatozoa

Question 5

What do ovaries produce?

Answer 5

Oocytes

Question 6

What do genitalia allow for?

Answer 6

Coitus - so that gametes can fuse to form an embryo (fertilisation)

Question 7

What is the pelvis?

Answer 7

A bony basin between the trunk and the lower limbs

Question 8

What does the pelvis consist of?

3

Answer 8

• Hip bones
• Sacrum
• Coccyx

Question 9

What are the 3 pelvic bones?

Answer 9

• Ilium
• Ischium
• Pubis

Question 10

The pelvic inlet is what?

Answer 10

Open

Question 11

The pelvic outlet is what?

Answer 11

Closed

Question 12

What is the pelvic outlet closed by?

Answer 12

Mucles

Question 13

What is bigger the pelvic inlet/outlet?

Answer 13

Inlet, the inlet is always bigger than outlet

Question 14

What are the 2 pelvic subdivisions?

2

Answer 14

• False/greater pelvis

- True/lesser pelvis

Question 15

What is the location of the false/greater pelvis?

2

Answer 15

• Superior region

- Above the pelvic inlet

Question 16

What does the false/greater pelvis contain within it?

Answer 16

Contains the GI tract

Question 17

What is the location of the true/lesser pelvis?

2

Answer 17

• Inferior region

- Between inlet and outlet

Question 18

What does the true/lesser pelvis contain within it?

Answer 18

Contains internal reproductive organs

Question 19

What are 3 features about the female pelvis?

Answer 19

• Broader subpubic angle
• Oval inlet
• Straighter coccyx

Question 20

What are 3 features about the male pelvis?

Answer 20

• Narrower subpubic angle
• Heart shaped inlet
• Curved coccyx

Question 21

What does the pelvic floor close over?

Answer 21

The pelvic outlet

Question 22

What two muscles are on the pelvic floor?

Answer 22

• Levator ani

- Coccygeus

Question 23

What are the openings in the pelvic floor?

3

Answer 23

• Urethra
• Anal canal
• Vagina (females)

Question 24

What is the male perineum?

Answer 24

The region inferior to the pelvic floor and between the upper region of the thighs

Question 25

What does the male perineum include? | 2

Answer 25

- External genitalia | - Anus

Question 26

What are the 2 triangular divisions of the male perineum?

Answer 26

- Urogenital triangle | - Anal triangle

Question 27

What is contained in the urogenital triangle? | 2

Answer 27

- Urethral opening | - External genitalia

Question 28

What is contained in the anal triangle? | 2

Answer 28

- Anal canal | - Fat

Question 29

What is the function of the male reproductive system? | 2

Answer 29

- To produce spermatozoa (sperm/male gametes) | - Transport spermatozoa into the female reproductive tract

Question 30

What is the male reproductive system made of? | 3

Answer 30

- Testes (male gonad) - Reproductive tract/duct - Accessory structures and glands

Question 31

What does the path that sperm travel along include? | 5

Answer 31

- Testes - Epididymis - Ductus (vas) deferens - Ejaculatory tract - Urethra

Question 32

What does the scrotum contain? | 3

Answer 32

- 2 testes - 2 epididymides - 2 spermatic cords

Question 33

What do the testes produce? | 3

Answer 33

- Sperm - Testosterone - Inhibin

Question 34

Where are the testes?

Answer 34

In the scrotum outside the body

Question 35

What are the testes surrounded by?

Answer 35

Dense fibrous capsule called the tunica albuginea

Question 36

The testes have 2 lobules containing what?

Answer 36

Seminiferous tubules

Question 37

What do seminiferous tubules join to form?

Answer 37

Rete testes

Question 38

What do rete testes join together to form?

Answer 38

Ductules

Question 39

What do ductules lead to?

Answer 39

the Epididymis

Question 40

What cells do the seminiferous tubules contain? | 3

Answer 40

- Interstitial endocrine (Leydig) cells - Nurse (sertoli) cells - Spermatogenic cells

Question 41

What do Interstitial endocrine (Leydig) cells produce?

Answer 41

Testosterone

Question 42

What do Nurse (sertoli) cells produce?

Answer 42

Inhibin

Question 43

What do Spermatogenic cells produce?

Answer 43

Spermatogonia and spermatozoa at various stages of development

Question 44

What are the 3 regions of the epididymus?

Answer 44

- Head - Body - Tail

Question 45

Where do the sperm enter the epididymus from?

Answer 45

The seminiferous tubules

Question 46

Where do the sperm exit the epididymus from?

Answer 46

The ductus deferens

Question 47

What is the epididymus the site of?

Answer 47

Sperm maturation

Question 48

What is the ductus deferens also know as?

Answer 48

vas deferens

Question 49

What does the ductus deferens continue from?

Answer 49

The epididymus

Question 50

Where does the ductus deferens start?

Answer 50

In the spermatic cord

Question 51

What is the ductus deferens covered by?

Answer 51

Smooth muscle

Question 52

What does the ductus deferens run behind?

Answer 52

The urinary bladder

Question 53

What does the ductus deferens dilate to form?

Answer 53

The ampulla

Question 54

What are the ejaculatory ducts formed by?

Answer 54

The union of the ducts from the seminal vesicle and the ampulla

Question 55

What do the ejaculatory ducts open in?

Answer 55

Prostatic urethra

Question 56

What are the 2 functions of the male urethra?

Answer 56

- Urination | - Ejaculation

Question 57

What happens to the epithelium along the male urethra?

Answer 57

Changes/transitions

Question 58

What are the 3 sections of the male urethra?

Answer 58

- Prostatic - Membranous - Penile/spongy

Question 59

What is the external urethral sphincter made of?

Answer 59

Skeletal muscle

Question 60

What is the function of the external urethral sphincter?

Answer 60

Voluntary control of urination

Question 61

What is the internal sphincter made of?

Answer 61

Detrusor muscle

Question 62

What is the function of the internal sphincter?

Answer 62

Closes the bladder ensuring sperm is ejaculated through the urethra

Question 63

What is retrograde ejaculate?

Answer 63

Sperm that ends up in the bladder due to the Internal sphincter not closing