The Human Anatomy

The human body is everything that makes up, well, you. The basic parts of the human body are the head, neck, torso, arms and legs.

The Body Systems

1. Circulatory system

2. Respiratory system

3. Digestive system

4. Endocrine system

5. Immune system

6. Lymphatic system

7. Nervous system

8. Muscular system

9. Reproductive system

10. Skeletal system

11. Urinary system

12. Integumentary system (Skin)

Circulatory System

The circulatory system is to move blood, nutrients, oxygen, carbon dioxide and hormones around the body. It consists of the heart, blood, blood vessels, arteries and veins.

Respiratory System

The Respiratory system allows 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.

Digestive System

The Digestive system consists 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 juice.

Endocrine system

The Endocrine system consists 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.

Immune System

The Immune System is the body’s defense against bacteria, viruses and other pathogens that may be harmful. It includes lymph nodes, the spleen, none marrow, lymphocytes (including B-cells and T-cells), the thymus and leukocytes, which are white blood cells.

Lymphatic system

The Lymphatic system includes lymph nodes, lymph ducts and lymph vessels and also plays a role in the body’s defences. Its mail 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.

Nervous system

The Nervous system controls 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 that connect every other part of the body to the central nervous system.

Muscular system

The body’s Muscular system consists of 650 muscles that aid in movement, blood flow and other bodily functions. There are three types of muscles: skeletal muscles whish 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 pump blood.

Reproductive system

The Reproductive system allows 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.

Skeletal system

Our bodies are supported by the Skeletal system, which consists of 206 bones that are connected by tendons, ligaments and cartilage. The skeleton not only helps us move, but it’s also involved in the production of blood cells and the storage of calcium. The teeth are also part of the skeletal system, but they aren’t considered bones.

Urinary system

The Urinary system helps 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 exits the body through the urethra.

Integumentary system (Skin)

The skin, or Integumentary system, is the body’ 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.