EVERYDAY SCIENCE

Detailed explanation-1: -The longest cells in the human body are neurons. Neurons are cells within the nervous system and carry messages throughout the body. The longest axons in the human body are those of the sciatic nerve, which run from the base of the spinal cord to the big toe of each foot.

Detailed explanation-2: -Ovum (female gamete) is the largest cell present in the human body. It is a single cell released from the ovary every month. The size of each ovum is 0.1mm in diameter. The smallest cell in the human body is the sperm (male gamete).

Detailed explanation-3: -Nerve cells are usually very long and branched so that it helps in transmission of signals or electrical impulses over all parts of the body. They divide and re-divide and so cover a large surface area of the body and every portion receives the signals from the central nervous system.

Detailed explanation-4: -The length of a nerve cell can vary from nanometers to meters. Yes, it’s true. Our body is composed of millions to billions of nerve cells. Some nerve cells can be comparatively smaller by 0.1 millimeters or can be longer by 1 meter.