Which of the following contributes in the formation of seminal plasma .?
(a) Sertoli cells (b) Seminal vesicle
( c) Spermatogonia (d) Leydig cells
( e) Bulbourethral gland
Prostate gland

Options

A. b,c,e,f
B. a,b,c,f,
C. b,c,d,e,f
D. only b,e,f

Answer

To determine which of the following contributes to the formation of seminal plasma, let's analyze each option step by step:

1. **Sertoli Cells (Option a)**:
- Sertoli cells are located in the seminiferous tubules of the testes and provide nourishment to developing spermatozoa (sperm cells). However, they do not secrete any components that contribute to seminal plasma.
- **Conclusion**: Sertoli cells do not contribute to seminal plasma.

2. **Seminal Vesicle (Option b)**:
- The seminal vesicles are accessory glands that secrete a significant portion of the fluid that makes up semen. They contribute approximately 70% of the seminal plasma, providing nutrients and other substances that support sperm motility and viability.
- **Conclusion**: The seminal vesicle contributes to seminal plasma.

3. **Spermatogonia (Option c)**:
- Spermatogonia are the precursor cells that develop into spermatozoa. They are not secretory cells and do not contribute to the fluid component of seminal plasma.
- **Conclusion**: Spermatogonia do not contribute to seminal plasma.

4. **Leydig Cells (Option d)**:
- Leydig cells are located in the interstitial tissue of the testes and are responsible for producing testosterone, the male sex hormone. While testosterone is important for male reproductive function, it does not contribute to the fluid composition of seminal plasma.
- **Conclusion**: Leydig cells do not contribute to seminal plasma.

5. **Bulbourethral Gland (Option e)**:
- The bulbourethral glands (also known as Cowper's glands) are located near the base of the penis and secrete a clear fluid that lubricates the urethra and contributes to the volume of semen. This secretion is part of the seminal plasma.
- **Conclusion**: The bulbourethral gland contributes to seminal plasma.

6. **Prostate Gland (Option f)**:
- The prostate gland secretes a fluid that nourishes and protects sperm. This fluid is also a significant component of seminal plasma, contributing to its overall volume and function.
- **Conclusion**: The prostate gland contributes to seminal plasma.

### Final Answer:
The components that contribute to the formation of seminal plasma are:
- (b) Seminal vesicle
- (e) Bulbourethral gland
- (f) Prostate gland