Lesson 15.3 Your Circulatory System
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Transcript Lesson 15.3 Your Circulatory System
Lesson 15.3
Your Circulatory System
Tabs:
1. The Body’s Transport System
2. Blood
p. 376
3. Problems and Care
On the Back:
1. Circulation
The Body’s Transport System
Circulatory System:
Organs and tissues that transport essential material to the
body cells and remove the waste
Cardiovascular System:
Another name for the Circulatory System
The Body’s Transport System
Pulmonary Circulation:
Flow of blood from the heart to the lungs
and back to the heart
Systemic Circulation:
Flow of blood from the heart to all of the
body tissue except the lungs
Atrium:
Top chambers of the heart
Pump blood to the ventricles
The Body’s Transport System
Ventricle:
Lower chambers of the heart
Pump blood out of the heart
Blood flows from atrium to ventricles
Pulmonary refers to the lungs
Cardiac refers to the heart
Types of Circulation in the Body
Rt.
-Lung-
Rt.
-Atrium- Lt.
Rt. -Ventricle- Lt.
Body
Lt.
Flow of Blood
1. Rt. Atrium
2. Rt. Ventricle
3. Pulmonary Artery to the
Lungs
4. Lungs
1. Picks up O2 and Drops
off CO2
5. Pulmonary Vein to Heart
6. Lt. Atrium
7. Lt. Ventricle
8. Aorta-largest artery in the
body
9. Body
1. Drops off O2 picks up
CO2
10.Back to Rt. Atrium
Blood
Blood:
A mixture of solids in a liquid called plasma
Plasma:
92% water, transports blood solids, nutrients,
hormones, and other materials
Red Blood Cells:
Carry 02 to cells and CO2 away from cells
White Blood Cells:
Helps fight disease and infection by attacking germs
Platelets:
Help blood forms clots at would site-prevents blood
loss
Blood
Blood Vessels:
80,000 miles of blood vessels that transport
blood throughout the body
Arteries carry blood away from the heart
Veins carry blood to the heart
Capillaries:
Tiny tubes that carry blood from the arteries to
the body cells and back to veins
Actual location of O2/CO2 transfer
Blood
Blood Pressure:
Measured by a sphygmomanometer
Systalic Pressure:
pressure at the highest
Occurs at ventricular contraction
Diastolic Pressure:
Pressure at the lowest point
Occurs on atrial contraction
BP is the measurement of the pressure that
blood exerts on the walls of the arteries
Blood
Blood Types
A:
Has A substances
Accepts A and O blood
B:
Has B substances
Accepts B and O blood
AB:
Has both A and B substances
Accepts A, B,O, and AB blood (universal recipient)
O:
Has neither substance
Only accepts O blood
Can donate to all types
Blood
Giving and Receiving Blood
Mixing blood types can cause dangerous
reactions, even death
Can give blood between ages of 17-70
Blood is frozen/refrigerated at blood
bank
New needles are used for each donor
Blood is tested for disease
Positive blood is discard and donor may be
notified
Problems of the Circulatory
System
Hypertension:
Blood pressure is consistently high
Can lead to heart attack, stroke, kidney
and other organ failure
Stroke:
Results from blood clot that blocks
vessels in the brain or a rupture of a
blood vessel in the brain
Problems of the Circulatory
System
Heart Attack:
Blockage in the flow of blood to the heart
Arteriosclerosis:
Hardening of the arteries
Reduces the amount of blood that can
flow through them
Anemia:
Abnormally low level of hemoglobin
Problems of the Circulatory
System
Leukemia:
Disease in which extra white blood cells are
produced
Hemophilia:
Disease in which the plasma doesn’t
contain substances that help the blood to
clot
Care of the Circulatory System
Limit Fat in Your Foods:
Fatty deposits can form on the walls of
your arteries
Causes narrowing
Increases blood pressure
Makes heart work harder to circulate blood
Damages organs
Get Regular Physical Activity:
Strengthens heart muscle
Heart beats more efficiently
Care of the Circulatory System
Avoid Tobacco:
Contain nicotine
Narrows arteries
Increases blood pressure
Manage Stress:
Stress makes body secrete adrenaline
Increases blood pressure