2023-2024 CBSE Science Class 10 Sample Question Paper download
Describe the role of prostate gland, seminal vesicle and testes in the human male reproductive system. How is the surgical removal of unwanted pregnancies misused? Explain the role of oral contraceptive pills in preventing conception.
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(i) Role of Prostate Gland, Seminal Vesicle, and Testes in the Human Male Reproductive System:
1.Prostate Gland:
a) The prostate gland is a walnut-sized organ located below the bladder and surrounds the urethra.
b) It produces a milky fluid that contributes to the seminal fluid during ejaculation. This fluid enhances the motility of sperm and provides nutrients for their viability.
2. Seminal Vesicle:
a) Seminal vesicles are paired sac-like structures located behind the bladder.
b) They secrete a significant portion of the seminal fluid, which contains fructose and other substances that provide energy for the sperm. The fluid from the seminal vesicles forms the majority of the ejaculated semen.
3.Testes:
a) The testes are the male reproductive organs responsible for the production of sperm and the male sex hormone, testosterone.
b) Sperm are produced in the seminiferous tubules of the testes and undergo maturation in the epididymis.
c) Testosterone, produced by the Leydig cells in the testes, is crucial for the development of male reproductive organs, secondary sexual characteristics, and maintaining reproductive function.
Together, these structures play vital roles in the production, storage, and transportation of sperm, as well as the composition of seminal fluid necessary for successful fertilization.
(ii) Misuse of Surgical Removal of Unwanted Pregnancies:
a)Surgical removal of unwanted pregnancies is typically achieved through procedures like abortion.
b)Misuse can occur when these procedures are performed without proper medical justification or by unauthorized and unskilled practitioners.
c)In some cases, individuals may seek abortions for reasons other than genuine medical or personal concerns, such as sex-selective abortions or coerced decisions.
d)Unsafe and illegal abortions can lead to serious health risks for the individuals involved, including complications, infections, and even loss of life.
It is essential to ensure that access to safe and legal abortion services is available, accompanied by comprehensive reproductive health education and counseling.
(iii) Role of Oral Contraceptive Pills (OCPs) in Preventing Conception:
a) Oral contraceptive pills, commonly known as birth control pills, are hormonal contraceptives taken orally by women.
b) They contain synthetic hormones (estrogen and/or progestin) that mimic the natural hormones in a woman’s body, preventing ovulation (release of an egg from the ovary).
c) OCPs also thicken cervical mucus, making it difficult for sperm to reach the egg, and alter the lining of the uterus to inhibit the implantation of a fertilized egg.
d) By regulating these physiological processes, OCPs effectively prevent conception when taken as directed.
e) It’s important to note that OCPs do not protect against sexually transmitted infections (STIs), and their use should be discussed with a healthcare provider to determine the most suitable method based on individual health considerations.
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