1. Human Circulatory System
The Heart and Circulation

2. Circulate these terms around!-
Circulation is the _____________of materials such as ______________, ________________, _______________, and __________ to and from all parts of the body
Intercellular circulation : circulation by the ______________ between _____________ and body _____________ and _____________.
Intracellular circulation: Circulation within the cell accomplished by _____________, _____________, and movement through the ____________________________.
Closed circulatory System: All blood is enclosed in __________________________
distribution
oxygen
Carbon dioxide
nutrients
wastes
blood
cells
tissues
organs
diffusion
cyclosis
Endoplasmic reticulum
Blood vessels
Blood Vessels:
Arteries
Veins
Capillaries

3. Circulate these terms around!-
Thick
away
1. Arteries: ______________ walled, elastic vessels that carry blood _____________ from the heart. 2. Veins: _________________ walled vessels that carry blood ______________ the heart. They contain ______________Which prevent the backflow of blood Capillaries: are ______________ thick, microscopic blood vessels that connect arteries to veins. This allows for easy exchange of materials (gasses, nutrients, etc.) between the ______________ and the _______________.
thinner to
valves
One celled
blood
cells

4. Meet the Circulatory Team
The heart is a muscular organ that pumps ______________ through the blood ________________ adjusting the rate of _______________ and _____________ to changing body requirements (ie: exercising increases heart rate)
Atria- _____________ walled _____________ chambers which receive blood returning in the _____________ from the _____________ and other body _____________ and pump it to the ________________.
Ventricles – Thick walled, lower chambers which pump blood out of the heart into the _________ which carry it to the __________ and other body tissues
blood
vessels
pulse
flow
thin
upper
veins
lungs
parts
ventricles
arteries
lungs

5. Meet the Circulatory Team
Valves- prevent _______________ of blood
Pericardium- Protective _______________ around the heart.
Septum- separates ____________ and _____________sides of the heart.
Back flow
membrane
right
left

6. Diagram of the Heart 1 1 4 5 3 2 A B 5 B E E A E C D E D C 4 2 3
Superior Vena Cava A. 1. B. 2. C. 3. D. 4. E. 5.
Right Atrium
Left Atrium
Inferior Vena Cava
Right Ventricle
Pulmonary Arteries
Left Ventricle
Aorta
A-V Valve
Pulmonary Veins

7. How does blood flow through the heart?

8. Circulatory Pathways
Systemic Circulation- Circulation between ______________ and ________________.
Pulmonary Circulation- circulation of blood between _______________ and ______________.
Coronary Circulation- Circulation of blood to the _____________ of the heart.
heart
body
heart
lungs
tissues

9. Is there a Doctor in the house?
High blood pressure-(hypertension) blood pressure in the ______________ is increased by stress, diet, heredity, smoking, and aging. This may ______________ the artery walls.
Arthrosclerosis- deposits of _____________ and ______________ on the inside walls of arteries causing a narrowing of the artery. This make it difficult for blood to flow and causes the heart to work harder.
Heart Attack- caused by a blockage of the _____________ artery. This starves the heart of _____________.
arteries
weaken
fat
cholesterol
coronary
oxygen

10. Angina- ______________ of an artery leading to the heart.
Stroke- caused by a ____________ or ______________ of a small blood vessel in the ____________
Aneurism- a ____________ in an artery that bursts.
These diseases or disorders cause a disruption in the human circulatory system and therefore interfere with the body’s __________________
narrowing
blockage
bursting
brain
bubble
homeostasis
Bursting Aneurism