Organ Systems

Cell Theory:

— The cell is the basic structural unit of life

— An organisms activity depends on it’s collective activity of cells

Major areas of the Cell

Nucleus (DNA)
Cytoplasm
Plasma Membrane

Transport: moving matter and energy

Gradients:

— an unequal distribution of particles or energy

— 3 types

chemical concentration
pressure
temp

BODY SYSTEMS

Nervous System:

— control systems of the body

— thought processes

— uses neurons and responses to outside activity and senses

Endocrine System:

— endocrine glands and hormones

— control of physiologic function and systems of body

— slower control system

Cardiovascular System:

— transports O2, nutrients, hormones, electrolytes, and blood

— removes waste

— includes heart, blood vessels, and blood

Respiratory System:

— moves air into and out of the lungs

— regulation of acid-base (pH) balance

— includes lungs

Muscular System:

— movement

— organ contraction and relaxation

— primary component is muscle fibers

Skeletal System:

— structural

— movement

— protection

— mineral storing

— blood cell formation

Integumentary System:

— protects deep tissue from injury

— temp control

— synthesizes vitamin D

Digestive System:

— transfer of nutrients, water, and food we consume

— gastrointestinal tract

Urinary System:

— waste removal

— includes kidney

Immune System:

— regulate susceptibility to severity and recovery of infection and disease

— includes physical, mechanical, chemical, blood, and cellular factors