The question asks about the rich components present in human seminal plasma. Understanding the composition of seminal plasma is crucial to answering this question correctly.
Seminal plasma is the fluid part of semen that is produced by various glands, including the seminal vesicles, prostate gland, and bulbourethral glands. It serves as a medium for spermatozoa, providing them with nourishment and facilitating their movement. Let's examine the components mentioned in the options:
- Fructose: Fructose is a significant component of seminal plasma. It provides an energy source for sperm, aiding their motility.
- Enzymes: Seminal plasma contains several enzymes that perform various functions, such as liquefying the semen post-ejaculation to help sperm travel.
- Calcium: Calcium is also present in seminal plasma and plays an important role in sperm function and integrity.
Now, let's analyze the options given:
- Option 1: Fructose and certain enzymes but poor in calcium.
This option is incorrect because seminal plasma contains a significant amount of calcium.
- Option 2: Fructose and calcium but has no enzyme.
This option is incorrect because enzymes are indeed present in seminal plasma.
- Option 3: Fructose, calcium and certain enzymes.
This option is correct as it accurately describes the presence of fructose, calcium, and enzymes in seminal plasma.
- Option 4: Glucose and certain enzymes but has no calcium.
This option is incorrect because seminal plasma does not contain glucose; it contains fructose instead, and it does have calcium.
Therefore, the correct answer is: Fructose, calcium and certain enzymes.