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How does the body maintain a stable internal environment?
How do the organ systems of the body work together?
What is the organization of the human body?
Which organ performs a specific physiological function?
How are human organs organized?
Humans and other complex organisms have specialized systems that maintain the internal environment, keeping it steady and able to provide for the needs of the cells. Different systems of the body carry out different functions.
- 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).
The integumentary system functions to enclose internal body structures and is the site of many sensory receptors. Some organs of this system include skin, hair, and nails. The skeletal system supports the body and enables movement (with the help of the muscular system). Bones are the major organs of this system.
Jul 25, 2024 · The ability of the body to maintain a stable internal environment is achieved through various negative and positive feedback loops. These loops constantly adjust body processes in response to internal and external changes to maintain systems at a set point.
Life processes of the human body are maintained at several levels of structural organization. These include the chemical, cellular, tissue, organ, organ system, and the organism level. Higher levels of organization are built from lower levels.
- Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Mat...
- 2019
The biology of the human body incorporates the body’s structure (or anatomy) and the body’s functioning (or physiology). The organization of the human body is a hierarchy of increasing size and complexity, starting at the level of atoms and molecules , and ending at the level of the entire organism.
In the body’s organizational hierarchy, tissues occupy a place between cells and organs. That is, a tissue is a group of cells with a similar shape and function. In turn, organs (which make up the body) are comprised of various tissues. The component cells of a tissue are a specific cell type.
