The nervous system, essentially the body’s electrical wiring, is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body.

Block diagrams close block diagramA diagram of a system represented by blocks connected by lines. are clear, simple diagrams showing all of the input, process and output elements that make up the ...

The human skeletal system consists of all of the bones, cartilage, tendons, and ligaments in the body. Altogether, the skeleton makes up about 20 percent of a person’s body weight. An adult’s ...

The female reproductive system is one of the most vital parts of the human reproductive process. The major organs of the female reproductive system include the vagina, uterus, ovaries, and ...

Here’s how it works. The integumentary system, or skin, is the largest organ in the body. Besides the skin, it comprises the hair and nails as well, which are appendages of the skin. In humans ...