Male Anatomy

Question 1

What are the 5 main parts of the sperms pathway?

Answer 1

1. Testis
2. Epididymis head/body
3. Epididymis tail
4. Sex glands
5. Penis

Question 2

Where is sperm stored?

Answer 2

Epididymal tail

Question 3

What are the 4 main accessory sex gland?

Answer 3

Ampullae
Vesicular
Prostate
Bulbourethral

Question 4

Which species has a disseminate prostate?

Answer 4

Ram

Question 5

Which species has a corpus prostate?

Answer 5

Stallion

Question 6

Which sex gland does the boar lack?

Answer 6

Ampullae

Question 7

Which sex glands does the tom lack?

Answer 7

Ampullae

Vesicular gland

Question 8

What is the only sex gland a dog has?

Answer 8

Prostate

Question 9

What are the 7 structures of the spermatic cord?

Answer 9

1. Testicular v.
2. Testicular a.
3. Testicular n.
4. Lymphatics
5. Cremaster m.
6. Ductus deferens
7. Vaginal tunic

Question 10

What is the temperature of the blood going to/from the body?

Answer 10

39oC

Question 11

What is the temperature of the blood going to/from the testis?

Answer 11

33oC

Question 12

What are the 3 parts of the excurrent duct system?

Answer 12

1. Efferent ducts
2. Epipidymal duct
3. Ductus Deferens

Question 13

What is the liquid, non-cellular portion of semen produced by the sex glands & epididymis?

Answer 13

Seminal plasma

Question 14

What kind of penises do bulls, boars, & rams have?

Answer 14

Fibroelastic

Question 15

What kind of penises do stallion & dogs have?

Answer 15

Musculovascular

Question 16

Which species have a cartilaginous process on their gland penis?

Answer 16

Alpaca

Question 17

Which species have penile spines?

Answer 17

Toms

Question 18

What hormone comes from the Hypothalamus tonic centre and triggers the release of FHS & LH?

Answer 18

GnRH

Question 19

When triggered by GnRH which organ releases FSH & LH?

Answer 19

Anterior lobe of Pituitary

Question 20

Leydig cells are analougous to what cells in the female?

Answer 20

Theca interna

Question 21

What hormone do Leydig cells produce?

Answer 21

Testosterone

Question 22

LH acts upon what cells?

Answer 22

Leydig cells

Question 23

LH trigger the release of what from Leydig cells?

Answer 23

Testosterone

Question 24

FSH acts upon what cells?

Answer 24

Sertoli

Question 25

What does FSH cause at Sertoli cells?

Answer 25

Stimulates spermatogensis | Release of estradiol

Question 26

What systemic effect does testosterone have?

Answer 26

Negative feedback of GnRH-->prolong LH secretion

Question 27

Where is testosterone converted to estradiol?

Answer 27

Seminiferous tubules lumen

Question 28

What effect does Inhibin have at the Sertoli cells?

Answer 28

Suppress FSH

Question 29

Where does spermatogenesis take place?

Answer 29

Seminiferous tubules(epithelium)

Question 30

What are the 3 stages of spermatogenesis?

Answer 30

Proliferation(Mitosis) Meiosis Differentiation

Question 31

Which of the 3 stages of spermatogenesis takes part in the basal most part of the seminiferous tubules?

Answer 31

Proliferation(mitosis)

Question 32

What part of the seminiferous tubules do meiosis & differntiation take place?

Answer 32

Adluminal

Question 33

What are the 5 stages of a sperms development?

Answer 33

1. Spermatogonia 2. Primary spermatocytes 3. Secondary spermatocytes 4. Spermatids 5. Spermatozoon

Question 34

What is another name for the Differentiation phase of spermatogenisis?

Answer 34

Spermiogenisis

Question 35

What are the 4 phases of the spermiogenisis?

Answer 35

1. Golgi phase 2. Cap phase 3. Acrosomal phase 4. Maturation

Question 36

Which of the 4 phases does acrosomic vesicle formation take place? A. Golgi phase B. Cap phase C. Acrosomal phase D. Maturation

Answer 36

A. Golgi phase

Question 37

Which of the 4 phases does acrosomic vesicle spreading over the nucleus take place? A. Golgi phase B. Cap phase C. Acrosomal phase D. Maturation

Answer 37

B. Cap phase

Question 38

Which of the 4 phases does nuclear & cytoplasmic elongation take place? A. Golgi phase B. Cap phase C. Acrosomal phase D. Maturation

Answer 38

C. Acrosomal phase

Question 39

What are the 3 parts of a spermatozoa's head?

Answer 39

Nucleus Acrosome Postnuclear cap

Question 40

What are the 3 parts of a spermatozoa's tail starting at the head and going down?

Answer 40

Middle piece Principal piece Terminal piece

Question 41

Pulse release of which 3 hormones takes place every several hours?

Answer 41

GnRH, LH, Testosterone

Question 42

T/F: Compared to the others FSH is release in larger pulses of shorter duration.

Answer 42

FALSE! FSH is released in SMALLER pulses of SHORTER duration

Question 43

T/F: Spermatozoa are being constantly released from the testes.

Answer 43

True!

Question 44

Spermatozoa are produced by testes(ie. spermatogeneisis) within _______.

Answer 44

5-9 weeks