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12 terms

Levels of structural organization in the human body

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Levels of structural organization in the human body.
1.) Chemical Level
2.) Cellular level
3.) Tissue level
4.) Organ level
5.) System level
6.) Organismal level
Chemical level
1. Basic level, includes atoms and molecules.
2.) essential atoms for maintaining life. C, H, O, N, P, Ca, A.
3.) Two essential molecules
a. DNA
b. Glucose
Cellular level
1.)Molecules combine to form cells.
2.) Muscle cells, nerve cells, and epithelial cells
Tissue level
1.)Tissues are groups of cells and the material sourounding them that work together to perform funtions

2.) Epithelial tissue, connective tissue, muscular tissue
Epithelial tissue
covers body surfaces, lines hollow organs and cavities., and forms glands.
Connective tissue
connects, supports, and protects body organs while distributing blood vessels to other tissues.
Muscular tissue
contracts to make body parts move and generates heat.
Nervous tissue
carries information from one parto of the body to another through nerve impulses.
Organ level
tissues joined together. sturctures that are composed of two or more tissue. specific function and shape.

Stomach, skin, bones, heart, liver, lungs, and brain.
System level
consist of related organs

digestive system,
Organismal level
An organism, any living individual. All the human body functioning together .
Body Systems
Integumentary system
Skeletal System,
Muscular system
Nervous system
endocrine system
cardiovasular system.
lymphatic system and immunity
respiratory system
digestive system.
urinary system.
reproductive system