Human Body Organ Systems and Structural Organization
The Eleven Organ Systems of the Human Body
The human body is composed of organ systems that function together to complete an organism. The structure of the organ system consists of organ systems, with notations mentioning to EXAM JA.
The Integumentary System includes the skin and nails. Its primary roles are to protect the body from the external environment, regulate body temperature, and maintain balance through homeostasis.
The Skeletal System consists of bones and cartilage. It provides protection for the body, stores calcium, and is responsible for producing blood.
The Muscular System is responsible for producing movement within the body.
The Nervous System works in conjunction with the Preproducem System. It functions to regulate body functions and provides sensation.
The Endocrine System operates using hormones to regulate the body. This system is characterized as being slower and longer-lasting in its effects.
The Cardiovascular System is responsible for pumping and delivering oxygen to the lungs. Red blood cells within this system carry the oxygen, which is a necessity for all tissue.
The Hympathic System provides immunity and protects the body against disease. It is described as a hotel that holds white blood cells. Effects or examples of this system's activity include bruising or swelling.
The Respiratory System is responsible for delivering oxygen to the blood and balancing the .
The Digestive System functions to remove food waste from the body.
The Urinary System is responsible for the removal of metabolic waste.
The Reproductive System is the eleventh system identified in the structural organization of the body.
Levels of Structural Organization
The human body is the largest and most complex organism. The levels of structural organization progress from the smallest, non-living components to the complete organism. The transition from non-living to living occurs at the cell level. Materials found outside of the cell are referred to as the Extracellular Matrix.
The Chemical level is the smallest level of organization and is considered non-living. It ranges from tiny atoms to molecules. Atoms that are combined make up molecules. This level can be compared to making a Cala, where the atoms are the ingredients tas.
The Cell level represents the smallest living level. All humans are composed of cells, which can be thought of as a mini version of us, represented by M3T2.
The Tissue level consists of or more cell types working together.
The Organ level is formed when or more tissue types combine to perform a special task. An example of an organ is the heart.
The Organ System level consists of multiple organs working together. An example of this level is the Cardiovascular System.
The Organism level is the most complex level, representing the complete human body.
Characteristics of Living Organisms
Living organisms are defined by several key characteristics and processes that occur continuously within the body.
Metabolism refers to the chemical reactions that are always occurring. This process involves the build-up and break-down of substances, with numerical values of and associated with these processes. A critical step in metabolism is excretion, which is the process the body uses to get rid of unwanted materials.
Responsiveness is the ability of the body to react to its environment. An example of responsiveness is the body reacting to the heat when touching a hot stove.
Movement is a characteristic that occurs both in individual cells and within the organism as a whole. It does not refer solely to walking. Examples of internal movement include the beating of the heart or the stomach digesting food.
Reproduction is a fundamental characteristic of living organisms, ensuring the continuation of the organism.