Lecture 34

Question 1

What are Gonads?

Answer 1

Organs where gametes (sex cells) are produced.

Testes in males and ovaries in females

Question 2

What core structures make up the pelvis?

Answer 2

Illium, pubis, ischium + sacrum and coccyx.

Question 3

What re the differences between the pelvic inlet and outlet?

Answer 3

Inlet is always open whereas outlet is closed by muscles. Inlet is always larger than outlet.

Question 4

What is the False/greater pelvis?

Answer 4

Superior region, above pelvic inlet that contains the GI tract.

Question 5

What is the True/lesser pelvis?

Answer 5

Inferior region between inlet and outlet that contains internal reproductive organs.

Question 6

How does the structure of the pelvis differ.between males and females?

Answer 6

The female pelvis has a broader subpubic angle, oval unlet and straighter coccyx. Whereas male pelvis has a narrower subpubic angle, heart shaped inlet and curved coccyx.

Question 7

Where is the pelvic floor located?

Answer 7

Closes over the pelvic outlet

Question 8

What muscles make up the pelvic floor?

Answer 8

Levator ani

Coccygeus

Question 9

What are the openings in the pelvic floor?

Answer 9

Urethra
Anal canal
Vagina in females

Question 10

What is the Male perineum?

Answer 10

The region inferior to the pelvic floor between the upper thighs, includes external genitalia and anus.

Question 11

What are the triangular divisions of the male perineum?

Answer 11

Anterior: Urogenital triangle - includes urethral opening and external genitalia.
Posterior: Anal triangle - Anal canal and fat.

Question 12

What is the functions of the male reproductive system?

Answer 12

Produce spermatozoa and transport it into the female reproductive tract.

Question 13

What components make up the male reproductive tract?

Answer 13

Testes
Reproductive tract/duct
accessory organs and glands

Question 14

What structures are included in the path that sperm travels along?

Answer 14

Testes, epididymis, Ductus deferens, Ejactulatory duct, Urethra.

Question 15

What structures are included in the scrotum?

Answer 15

Two testes, two epididymis, two spermatic cords ( with part of ductus deferens)

Question 16

Functions of the testes?

Answer 16

Produce sperm, testosterone and inhibin.

Question 17

Location/structure of Testes?

Answer 17

Lie in scrotum - outside the body. surrounded by a dense fibrous capsule ( tunica albuginea.)

Question 18

What are seminiferous tubules?

Answer 18

Located inside lobules of testes, tubules join to form rete testis,

Question 19

Function of Interstitial endocrine cells?

Answer 19

produce testosterone

Question 20

Function of Nerve cells?

Answer 20

Produce Inhibin

Question 21

Function of spermatogenic cells?

Answer 21

produce spermatogonia and spermatozoa at various stages of development.

Question 22

Where are IE cells, nurse cells and spermatozoa cells located?

Answer 22

In the seminiferous tubules

Question 23

Structure of epididymis?

Answer 23

Head, body and tail

Question 24

Where does sperm enter and exit the epididymis?

Answer 24

Enters from seminiferous tubules and exits via ductus deferens.

Question 25

Location of ductus deferens?

Answer 25

Continues from epididymis, starts in spermatic cord and runs behind the urinary bladder.Dilates to form ampulla.

Question 26

What forms the ejactulatory ducts?

Answer 26

• Formed by the union of the duct
from the seminal vesicle and the
ampulla. Opens n prostatic urethra

Question 27

Functions of the male urethra?

Answer 27

urination and ejaculation.

Question 28

Epithelium of male urethra?

Answer 28

Changes from transitional to columnar to stratified squamous.

Question 29

What are the regions of the male urethra?

Answer 29

Prostatic
membranous
Penile

Question 30

Functions of internal sphincter (detrusor muscle)?

Answer 30

Closes bladder ensuring sperm

ejaculated through the urethra

Question 31

What is retrograde ejactulation?

Answer 31

When sphincter doesn’t close so sperm ends up in bladder.