1. Circulatory System
Delivers food and oxygen to body cells and carries carbon dioxide and other waste products away from body cells

2. Flow of Blood Blood flows from the heart to the lungs.
After picking up oxygen, the blood returns to the heart.
It is then pumped to all the cells of the body.
Finally it is returned to the heart to start the process over.

3. Circulatory System Heart Arteries and arterioles Capillaries Veins
Pumps blood
Arteries and arterioles
Carry blood away from heart
Capillaries
Exchange nutrients with tissues
Veins
Carry blood toward heart

6. Pulmonary and Systemic Circuits
Left side of heart
Pumps oxygenated blood to body via arteries
Returns deoxygenated blood to right heart via veins
Pulmonary Circuit
Right side of heart
Pumps deoxygenated blood to lungs via pulmonary arteries
Returns oxygenated blood to left heart via pulmonary veins

7. Components of Blood Plasma- ~55% of blood Cells
Liquid portion of blood
Contains ions, proteins, hormones
Cells
Red blood cells
Contain hemoglobin (iron-containing protein) to carry oxygen
White blood cells
Most important part of the body’s defense system
Platelets
Important in blood clotting

8. Blood Cells

9. Lymphatic System
When blood travels through capillaries, some plasma will leak out, it is called lymph
Lymph gathers in tiny vessels that send it back into the bloodstream via the two veins in the neck
Lymph nodes, masses of tissue that lymph travels through, help get rid of harmful bacteria

10. Lymphatic System