The clitoris is an organ located near the vagina. It can be seen from outside the body when it is not covered by its hood. When stimulated, it becomes larger, longer, firmer, more sensitive, and more responsive to touch than usual. This happens because of internal structures called "bulbs" that engorge with blood during arousal.
Clitoral structure
The clitoris consists of several parts including the glans (the external part), shaft, crura, bulbs, root, and vestibular bulbs. The shaft reaches down into the pelvis and attaches to the labia minora. The bulbs are located inside the pelvic region and contain erectile tissue. The root connects the bulbs to the rest of the clitoris. Vestibular bulbs are attached to the inner surface of the pubic bone and cover the urethra.
Function of the bulbs
When blood flow increases during sexual excitement, the bulbs become filled with blood, causing the clitoris to enlarge. This increased blood flow causes sensation in the nerve endings surrounding them, which leads to increased pleasure. The bulbs also help maintain the shape of the clitoris during arousal, keeping it firm and erect.
How the bulbs work
During arousal, nerves send signals to the brain telling it to release nitric oxide. Nitric oxide causes the smooth muscles around the blood vessels in the bulbs to relax, allowing more blood to enter. This process continues until the desired level of arousal is reached, or until orgasm occurs.
Evolutionary purpose
It is believed that the clitoris has evolved as a way for females to feel pleasure during sex. This helps ensure that they will want to have sex again, increasing their chances of reproduction. The bulbs provide extra sensory stimulation, making the experience even more pleasurable. Some scientists believe that this could be an evolutionary adaptation to ensure that women continue having sex even when they are not fertile.
Overall, the internal structures of the clitoris known as "bulbs" play a crucial role in its functioning. They engorge with blood during arousal, leading to increased sensitivity and pleasure. Understanding how these structures work can lead to better sexual experiences for both men and women.