BIOLOGY

Unit 7 Notes:Living

Organization

(1) Living Organization• All living things are made of cells and

atoms/molecules.

• Levels of Organization:– Atoms and Molecules– Organelles and Cells– Tissues– Organs– Organ Systems– Organism

(2) Homeostasis• Involuntary processes and reactions are in place to

maintain Homeostasis within cells.

• Homeostasis = Internal stability / balance.

(3) Nervous System• Function:– Controls all other organ systems + homeostasis.– Allows you to respond to changes/stimuli.

• Made Up Of:– Brain– Spinal Cord– Nerves

(4) Lymphatic System• (A.K.A. The Immune System)

• Function:– Protect body against harmful infectious agents +

compounds.

• Made Up Of:– White Blood Cells– Lymph Vessels, Nodes, and Fluid

(5) Cardiovascular System• Function:– Work with the respiratory system to circulate gases.– Pump nutrients throughout the body to working

tissues.

• Made Up Of:– Heart– Blood Vessels– Blood + Blood Cells

(6) Respiratory System• Function:– Work with the cardiovascular system to circulate gases.– Bring oxygen into body + expel carbon dioxide.

• Made Up Of:– Nasal Cavity– Lungs– Diaphragm

(7) Skeletal System• Function:– Provide body support and mobility.– Protect organs.

• Made Up Of:– Bones– Joints– Cartilage

(8) Muscular System• Function:– Body + Organ mobility.– Produce body heat.

• Made Up Of:– Muscle – Ligaments + Tendons

(9) Digestive System• Function:– Break food into smaller pieces.– Metabolize biomolecules within food.– Absorb useful nutrients + expel waste.

• Made Up Of:– Oral Cavity + Esophagus– Stomach– Small + Large Intestine– Rectum + Anus

(10) Excretory System• (A.K.A. The Urinary System)

• Function:– Filter Blood.

• Made Up Of:– Kidneys– Ureters– Bladder– Urethra

(11) Reproductive System• Function:– Pass genes on to produced offspring.

• Made Up Of:– Male Sperm, Testes, Penis– Female Eggs, Ovaries + Uterus, Vagina