The human body - Essay Example
Brain, nerves & spinal cord.
Functions to provide strength and connections to move the arm or leg or to make the facial expressions. Muscles cover almost every bone of the body except fingers and teeth and skull. It also help in Maintaining posture & generate heat by shivering.
Pumps blood to each part of the body. Takes oxygen from the lungs and transports it to the each part of the body and carry carbon dioxide that is released through respiration. Heart, veins and arteries.
Skin has millions of sensory nerves that send information to the brain; the information regarding the environment, temperature, etc. If the brain senses that the temperature is a bit higher than the body temperature, brain sends signal to the sweat gland to open and cool the body. In some cases, the brain sends signal to the muscles connected to skin hair to contract or expand according to the environment or other condition.
At 25 years the body functions seem to be efficiently functional.
