Question

what is the man function of humman body

Answer 1

Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living.The job of thecirculatory systemis to move blood, nutrients, oxygen, carbon dioxide, and hormones, around the body. It consists of the heart, blood, blood vessels,arteries and veins.Thedigestive systemconsists of a series of connected organs that together, allow the body to break down and absorb food, and remove waste. It includes the mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus. The liver and pancreas also play a role in the digestive system because they produce digestive juices.Theendocrine systemconsists of eight major glands that secrete hormones into the blood. These hormones, in turn, travel to different tissues and regulate various bodily functions, such as metabolism, growth and sexual function.Theimmune systemis the body's defense againstbacteria, viruses and other pathogens that may be harmful. It includes lymph nodes, the spleen, bone marrow, lymphocytes (including B-cells and T-cells), the thymus and leukocytes, which are white blood cells.Thelymphatic systemincludes lymph nodes, lymph ducts and lymph vessels, and also plays a role in the body's defenses. Its main job is to make is to make and move lymph, a clear fluid that contains white blood cells, which help the body fight infection. The lymphatic system also removes excess lymph fluid from bodily tissues, and returns it to the blood.Thenervous systemcontrols both voluntary action (like conscious movement) and involuntary actions (like breathing), and sends signals to different parts of the body. The central nervous system includes the brain and spinal cord. The peripheral nervous system consists of nerves thatconnect every other part of the body to the central nervous system.The body'smuscular systemconsists of about 650muscles that aid in movement, blood flow and other bodily functions. There are three types of muscle: skeletal muscle which is connected to bone and helps with voluntary movement, smooth muscle which is found inside organs and helps to move substances through organs, and cardiac muscle which is found in the heart and helps pumpblood.Thereproductive systemallows humans to reproduce. The male reproductive system includes the penis and the testes, which produce sperm. The female reproductive system consists of the vagina, the uterus and the ovaries, which produce eggs. During conception, a sperm cell fuses with an egg cell, which creates a fertilized egg that implants and grows in the uterus. [Related: Awkward Anatomy: 10 Odd Facts Aboutthe Female Body]Our bodies are supported by theskeletal system, which consists of 206 bones that are connected bytendons, ligaments and cartilage. The skeleton not only helps us move, but it's also involved in theproduction of blood cells and the storage of calcium. The teeth are also part of the skeletal system, but they aren't considered bones.Therespiratory systemallows us to take in vital oxygen and expel carbon dioxide in a process we call breathing. It consists mainly of the trachea, the diaphragm and the lungs.Theurinary systemhelps eliminate a waste product called urea from the body, which is produced when certain foods are broken down. The whole system includes two kidneys, two ureters, the bladder, two sphincter muscles and the urethra. Urine produced by the kidneys travels down the ureters to the bladder, and exitsthe body through the urethra.The skin, orintegumentary system, is the body's largest organ. It protects us from the outside world, and is our first defense against bacteria, viruses and other pathogens. Our skin also helps regulate body temperature and eliminate waste through perspiration. In addition to skin, the integumentary system includes hair and nails.

Answer 2

few main function of human body are respiration, circulation,digestion
and excretion without these functions no one can be alive. And even proper taking place metabolic activities in body.