Seminal Vesicles

Question 1

Are these structures paired or unpaired?

Answer 1

Paired

Question 2

Describe the shape of the seminal vesicles

Answer 2

5cm long tubular glands

Question 3

These vesicles are located between the bladder fundus and the ________

Answer 3

rectum

Question 4

Which duct does the seminal vesicle ducts join with to form the ejaculatory duct?

Answer 4

Vans deferens

Question 5

Describe the internal structure of the gland

Answer 5

honeycombed, lobulated structure

Question 6

The mucosa of the gland is lined by which type of cell?

Answer 6

pseudostratified columnar epithelium

Question 7

Which hormone causes these cells to grow taller?

Answer 7

testosterone

Question 8

The columnar cells produce the _______

Answer 8

seminal secretions

Question 9

What is the embryonic origin of the seminal vesicles?

Answer 9

mesonephric ducts

Question 10

the seminal secretions make up ____% of the semen

Answer 10

70%

Question 11

The first fractions of expelled semen contain mainly what?

Answer 11

spermatozoa and prostatic secretions

Question 12

The late ejaculate fractions are made up of______

Answer 12

fluid from seminal secretions

Question 13

What is are the constituents of the seminal secretions

Answer 13

Alkaline fluid, fructose, prostaglandins, clotting factors

Question 14

What is the role of the alkaline fluid?

Answer 14

neutralises the acidity of the male urethra and vagina in order to facilitate the survival of spermatozoa.

Question 15

What is the role of the fructose?

Answer 15

energy for spermatozoa

Question 16

What is the role of the prostaglandins?

Answer 16

suppress female immune response to sperm

Question 17

What is the role of the clotting factors?

Answer 17

designed to keep semen in the female reproductive tract post-ejaculation.

Question 18

Is innervation mainly sympathetic or parasympathetic?

Answer 18

Sympathetic