Search results
Sep 21, 2024 · human body, the physical substance of the human organism, composed of living cells and extracellular materials and organized into tissues, organs, and systems. Human anatomy and physiology are treated in many different articles.
- The Editors of Encyclopaedia Britannica
Overview of Human Anatomy and Physiology. The human body comprises 200 bones, 650 muscles, 79 organs, and an extensive network of blood arteries. Within this organized framework, a complex collaboration of individual cells is present, diligently fulfilling their unique roles to sustain life.
The human body is composed of elements including hydrogen, oxygen, carbon, calcium and phosphorus. These elements reside in trillions of cells and non-cellular components of the body. The adult male body is about 60% total body water content of some 42 litres (9.2 imp gal; 11 US gal).
Innerbody Anatomy Explorer. There are 12 major anatomy systems: Skeletal, Muscular, Cardiovascular, Digestive, Endocrine, Nervous, Respiratory, Immune/Lymphatic, Urinary, Female Reproductive, Male Reproductive, Integumentary. Select a system below to get started.
- 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).
Jun 20, 2023 · Learn about the 11 major organ systems in the human body and their functions, such as circulatory, respiratory, digestive, skeletal, muscular, nervous, and reproductive. Explore the body parts that make up each organ system and how they work together.
Encyclopaedia. Splenius Capitis. by Sharanya Bhaskaran. Learn anatomy faster with our 3D human anatomy models. Over 400 models, by region, by structure and by system.
