NCERT Solution for Class 10 Science Chapter 8
How do Organisms Reproduce?
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-140
Questions No-3
What is the role of the seminal vesicles and the prostate gland?
Share
The secretions from seminal vesicles and prostate glands lubricate the sperms and provide
a fluid medium for easy transport of sperms. Their secretion also provides nutrient in the
form of fructose, calcium, and some enzymes.
For more answers visit to website:
https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-8/
The seminal vesicle and the prostate glands add their secretions so that the sperm are in a fluid which makes their transport easier and this fluid also provides nutrition.
(i) Both seminal vesicle and prostate gland secretes fluids which forms a part of the semen. The fluid secreted from seminal vesicle forms 60% of semen while the fluid secreted from the prostate gland forms 30% of the semen. It makes the path smooth through which the sperms travel.
(ii) This fluid protects the sperms from the acids present in the urethra.
(iii) This fluid provides nutrition to sperms in the form of fructose, calcium and some enzymes.
Seminal vesicles and prostate gland are the part of male reproductive system and their functions are-
(i) Both add their secretions to vas deferens which carries sperms from the testes, thus makes the transport of sperms easier.
(ii) Provide nutrition to the sperms.
. Secretions of seminal vesicles and prostate gland provide fluid medium for sperms to swim.
. Provides nutrition for them.
. provides right pH for their survival.
The seminal vesicles and the prostate gland are two accessory reproductive glands in males that play crucial roles in the production and composition of semen, which is the fluid that carries and nourishes sperm during ejaculation.
1. Seminal Vesicles:
» Location: The seminal vesicles are located behind the bladder and are connected to the vas deferens, a duct that carries sperm from the testes.
» Function: The seminal vesicles contribute a significant portion of the fluid that makes up semen. This fluid contains various substances, including fructose (a sugar that provides energy for sperm), prostaglandins (which may have a role in sperm motility), and enzymes. The alkaline nature of the seminal vesicle fluid helps neutralize the acidic environment of the male urethra and the female reproductive tract, creating a more favorable environment for sperm survival and motility.
2. Prostate Gland:
» Location: The prostate gland is a small, walnut-sized gland situated just below the bladder and surrounds the urethra.
» Function: The prostate gland produces a milky fluid that also contributes to the composition of semen. This fluid contains enzymes, citric acid, and prostate-specific antigen (PSA). The enzymes help to liquefy the semen after ejaculation, aiding in the movement of sperm. PSA plays a role in the liquefaction process and may also help in the breakdown of cervical mucus, facilitating the entry of sperm into the uterus.
Together, the fluids produced by the seminal vesicles and the prostate gland mix with sperm from the testes as they travel through the vas deferens. This mixture forms semen, which is ejaculated from the penis during sexual climax. The combination of fluids from these accessory glands and sperm from the testes provides an optimal environment for sperm function, survival, and transport within the female reproductive tract.