Zoology MCQs for NEET — Practice Questions with Answers

Approximately 60% of the volume of semen is produced by the seminal vesicles. The seminal fluid contains fructose, which provides energy for the sperm, and other substances that enhance sperm motility and viability.

The bulbourethral glands, also known as Cowper's glands, secrete a clear, viscous fluid that serves as a lubricant during sexual intercourse. This fluid helps to lubricate the urethra for spermatozoa to pass through and neutralizes traces of acidic urine in the urethra.

The ovaries are maintained in their position within the pelvic cavity by a series of ligaments, which include the ovarian ligament, suspensory ligament, and the broad ligament. These structures help to stabilize the ovaries and keep them in place.

The outermost layer of the ovary is covered by a single layer of cuboidal epithelium, which is also known as the germinal epithelium. This layer plays a role in the protection and the functional processes of the ovary.

After ovulation, the Graafian follicle transforms into a glandular structure known as the corpus luteum. The corpus luteum is responsible for producing progesterone, which is crucial for maintaining the uterine lining and supporting early pregnancy.

The uterus is situated between the urinary bladder and the rectum in the female pelvic cavity. This positioning allows it to receive the fertilized egg and support fetal development.

The wall of the uterus is composed of three layers: the endometrium (inner layer), the myometrium (middle muscular layer), and the perimetrium (outer layer). Each of these layers has a specific role in uterine function and reproductive processes.

The myometrium is the bulky middle layer of the uterus. It is composed of smooth muscle and plays an active role during labor and delivery by contracting to help expel the baby from the uterus.