G2: LEVELS OF ORGANIZATION Flashcards
- Cells are the structural and functional unit of the human body that carries out chemical activities needed to sustain life.
- It is the smallest independent living organism, yet the cell contains all the parts necessary to survive in a constantly changing environment.
- Each type of cell in the body performs a certain purpose, and cells are the ones that start practically all physiological process in humans.
CELLULAR LEVEL
- consists of a group of cells that work together to accomplish one or more specific functions. There are only four distinct types of tissue in an adult human.
TISSUE LEVEL
Levels in Tissue Organization
Muscle tissue
Neural Tissue
Epithelial Tissue
Connective Tissue
- Organs are structures that are formed with several types of tissues from the preceding level. Most organs of the human body contain the 4 types of tissues. These organs perform particularly physiological functions that are essential for our body to work. The heart for example, contains muscle tissues which is necessary for pumping the blood through the vessels of the circulatory system.
- Another example is the gastrointestinal tract or the digestive tract where the 4 types of tissue can be observed.
ORGAN LEVELS
- It is the highest level of structural levels of an organism wherein a group of organs work together to accomplish an overall function of the total organism (human body).
At the organ system level, there are two or more different tissues combine to form an organ. - The hierarchical level of the human body simply aids to the living functions in an organized manner of an organism.
- In total, there are 12 different organ systems in the human body namely the
ORGAN SYSTEM
Protects the body, temperature regulation, eliminates infection.
INTEGUMENTARY SYSTEM
Supports and protects, provides surface area, aids in body movements, produces blood cells, stores minerals and lipids.
SKELETAL SYSTEM
involved for heat production and movement
MUSCULAR SYSTEM
Produces hormones.
ENDOCRINE SYSTEM
Moves lymph between tissues and the blood stream
LYMPHATIC SYSTEM
Prevents diseases.
IMMUNE SYSTEM
Brings air to sites.
RESPIRATORY SYSTEM
Transports oxygen, nutrients, and hormones to the body cells. It also moves waste and carbon dioxide away from cells.
CARDIOVASCULAR SYSTEM
Digests food and absorbs nutrients.
DIGESTIVE SYSTEM
Controls pH; controls water and salt balance.
URINARY SYSTEM
