Seminal Vesicles – Class 12 | Chapter – 3 | Biology Short Notes Series PDF
Seminal Vesicles: It is the secondary reproductive structure in males. It lie on each side of the front part at the neck region of the urinary bladder. The function of the seminal vesicles is to store sperms and to secrete seminal fluid.
Function of Seminal Vesicle
- The main function of the seminal vesicles is to produce a fluid that is high in fructose, a sugar that provides nutrients for sperm cells, as well as other proteins, enzymes, and mucus.
- The fluid produced by the seminal vesicles is stored in the vesicles themselves.
- The alkaline fluid of the seminal vesicle protects the sperm from the acidic environment of the vagina.
Structure of Seminal Vesicle
The seminal vesicles have a pyramid-like shape and are around 5 cm (2 inches) in length. The internal structure of this organ consists of three layers:
- Outer layer: Connective tissue
- Middle layer: Smooth muscle tissue
- Inner layer: Specialized mucosal cells that produce and secrete seminal vesicle fluid
Fluid secreted by the Seminal Vesicle
| Component | Function |
| Fructose | Provides an energy source for sperm motility |
| Alkaline fluid | Neutralizes the acidic environment in the female vagina |
| Proteins | Protect the sperm by creating a gel-like layer around them |
| Potassium | Mineral ion that helps with the sperm’s motility |
| Phosphorus | Mineral ion that helps with the sperm’s motility |
| Prostaglandins | Hormones that reduce the immune response to semen in the female |
| JOIN OUR TELEGRAM CHANNELS | ||
| Biology Quiz & Notes | Physics Quiz & Notes | Chemistry Quiz & Notes |
By Team Learning Mantras
