Levels of Organization

Levels of Organization

1. Chemical or Molecular Level

   • Atoms combine to make molecules
     • Molecular shapes determines its function.

2. Cellular Level

   • When molecules interect they for organelles
     • Each organelle aslo has a specific function
       • Organelles perform vital functions that keep cells alive

3. Organ System Level

   • Organ system is the process and parts of the organ that make it functuin
     • Organ Systems in the Human Body and its functions
       • Muscular System (MUSCLES)
         • Locomotion, support, heat protection.
       • Endocrine SYstem
         • Directing long-term changes in the activities of other organ systems
       • Cardiovascular System (HEART)
         • Internal transport of cells and dissolved materials, including nutrients, wastes and gases
       • Respiratory System (LUNGS)
         • Delivery of air to sites where gas exchange can occur between the air and the circulating blood
       • Lymphatic System (LYMPH NODES)
         • Defense against infection and disease
       • Urinary System (PEE)
         • Elimination of Excess water, salts and waste products.
       • Reproductive System (WHERE BABIES COME FROM)
         • Production of sex cells and hormones.
       • Skeletal System (BONE)
         • Support, protection of soft tissues, mineral storage, blood formation.
       • Integumentary System (SKIN)
         • Protect from environmental hazards, temperature control
       • Digestive System (FOOD PROCESSING)
         • Processing of food and absorption of nutrients, minerals, vitamins and water.
       • Nervous System (NERVES)
         • Directing immediate responses to stimuli, usually by coordinating the activities of other organ systems.

4. Organism Level

   • All of the organ systems in the body work together to maintain life and health of the organism

5. Tissue Level

   • A tissue is composed of similar cells working together

6. Organ Level

   • An organ consists of two or more different tissues
     • Although the tissues are different, they come together to perform one specific task