The human body is the most complicated structure in the world. It consists of the head, neck, legs, and hands. Millions and trillion of cells (the basic unit of body) form the human body.

When the human reaches the adulthood the body will consists of 50 trillion cells. The cells are organized biologically to form the whole body.

With the help of the human body we can see the world, breathe in the air, walk, eat, run, etc. it also consists of bones, muscles, arteries, veins, and internal organs. Each part of the body is different from the others and does a unique function.

The organ systems of the human body are musculoskeletal system, cardiovascular system, digestive system, endocrine system, integumentary system, urinary system, lymphatic system, immune system, respiratory system, nervous system, and reproductive system.

Size, type, and proportion:

Male can grow to an average height of about 5’7” to 5’11” and the female can grow to an average height of about 5’2” to 5’7”. The size of the human body is determined by the genes and diet. Type of the body and its composition are subjective to the postnatal factors like diet and exercise.

Human body parts

The surface anatomy of the human body consists of the following. These are the common body parts that are well known. The physical body parts are as follows:

Head – The head consists of the Eyes, nose, mouth, fore head, ears, cheek, and chin.

Neck – The neck consists of the shoulders.

Hand – The hand consists of elbow, wrist, fingers, and thumbs.

Spine – The spine consists of chest and the thorax.

Leg – The leg consists of knee, ankle, foot, and toes.

Human body organs

An organ is a structure in the human body that consists of two types of tissue. The tissues function together for a common purpose. There are different types of organs in the human body. All the organs in the body unite to form the organ system. The major organ systems in the body are:

  • Heart
  • Brain
  • Lungs
  • Liver
  • Stomach
  • Spleen
  • Kidneys
  • Gallbladder
  • Pancreas
  • Intestines
  • Genitals
  • Skin
  • Appendix
  • Bladder
  • Eyes
  • Esophagus
  • Prostate
  • Thyroid
  • Veins