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- Skeletal system. The skeletal system is composed of bones and cartilages. There are two parts of the skeleton; axial and appendicular. The axial skeleton consists of the bones of the head and trunk.
- Muscular system. The muscular system consists of all the body muscles. There are three muscle types; smooth, cardiac and skeletal muscles. Smooth muscle is found within walls of blood vessels and hollow organs such as the stomach or intestines.
- Cardiovascular system. The cardiovascular system is comprised of the heart and the circulatory system of blood vessels. The heart is composed of four chambers; two atria and two ventricles.
- Respiratory system. The respiratory system consists of a series of organs; the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles and lungs (alveoli).
- What Are The Different Systems in The Human body?
- Fast Facts
- What Are Vestigial organs?
- Additional Resources
Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living. The job of 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. According to the Cleveland Clinic, the human b...
The human body contains nearly 37.2 trillion cells.It’s estimated that the microbial biome of our bodies, including bacteria and fungi is around 39 trillion cells.The average adult takes around 22,000 breaths a day.Each day, the kidneys process about 200 quarts (50 gallons) of blood to filter out about 2 quarts of waste and water.Unlike the vital organs, there are some other organs and structures within the human body that no longer serve a purpose - known as vestigial organs. That's not to say that they didn’t once play a role in human survival, according to the Department of Anatomy at Midwestern University. Over the course of human evolution, some organs and anatomical s...
Mar 21, 2024 · For detailed discussions of specific tissues, organs, and systems, see human blood; cardiovascular system; human digestive system; human endocrine system; renal system; skin; human muscle system; nervous system; human reproductive system; human respiration; human sensory reception; and human skeletal system.
- The Editors of Encyclopaedia Britannica
Jan 26, 2024 · Organs and their functions. Vital organs. Non-vital organs. Organ systems. Summary. The five vital organs in the human body are the brain, heart, lungs, kidneys, and liver. Other organs...
- Claire Gillespie
- Skeletal System. The skeletal system is made up of 206 bones connected by various tendons, ligaments and cartilage, and has many vital functions. The system consists of the axial skeleton and the appendicular skeleton.
- Vital Organs. The body contains five vital organs essential for survival. The human brain is like the body's control center, communicating with other organs via secreted hormones and the nervous system.
- Reproductive System. The reproductive systems allow humans to reproduce and bear children. The male reproductive system includes the penis and the testes, which produce sperm.
- Integumentary System. You probably know the integumentary system better as the skin, but it also includes the hair and nails. This is the body's largest organ, protecting you from the outside world and helping to regulate body temperature and eliminate waste via perspiration.
It consists of head, hair, neck, torso (which includes the thorax and abdomen ), arms and hands, legs and feet . The study of the human body includes anatomy, physiology, histology and embryology. The body varies anatomically in known ways. Physiology focuses on the systems and organs of the human body and their functions.
Key points. Humans—and other complex multicellular organisms—have systems of organs that work together, carrying out processes that keep us alive. The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems.