Do Now: 12/4/151. Take out Web quest HW.2. Move into quiz positions, clear off your desk of everything EXCEPT HW.

HW: Get binder organized, if necessary. Open Book Quiz on Tuesday 12/8. Unit Test on Friday, 12/11Current Events next Thursday Roll Call #13-16

• Label the shapes and draw arrows to show the direction of blood flow.

*Add in the four chamber of the heart and

the major vessels (aorta, vena cava, pulmonary artery, pulmonary vein)

Heart

LungsBody

After turning in the Quiz:

Heart

LungsBody

Right Atrium

Right Ventricle

LeftAtrium

LeftVentricle

Pulm. artery

Pulm. vein

Aorta

Vena Cava

• Write a paragraph describing the pathway of blood through the body.

• In your description be sure to use the following terms AND UNDERLINE THEM:

Right atrium BodyRight ventricle LungsLeft atrium Pulmonary ArteryLeft ventricle Pulmonary VeinAorta Oxygen Poor BloodVena Cava Oxygen Rich Blood

The Pathway of Blood• First the oxygen poor blood moves into the right atrium

through the vena cava. Next, the oxygen poor blood moves into the right ventricle. The blood then leaves the heart though the pulmonary artery and goes to the lungs to pick up oxygen.

• The oxygen rich blood then comes back to the heart through the pulmonary veins and flows into the left atrium. The blood next moves to the left ventricle and then goes out to the body cells through the aorta.

• The oxygen rich blood delivers oxygen and nutrients to all of the cells. After, the oxygen poor blood will flow back to the heart through veins, back to the Vena Cava and the process begins again.

Current Events!

HypertensionDescription: consistent high blood pressure

Causes: age, birth control pills, medicines, pregnancy, kidney failure, thyroid disease etc.

Symptoms: None (“silent killer”)

Treatment:1.Lifestyle changes: change diet, no smoking,

less/no stress2. Medication: diuretics, beta blockers etc.

Risk Factors:1)Obesity 2)Ethnicity/Race3)Age 4)Gender5) Excess Salt/Smoking/Alcohol

AtherosclerosisDescription: artery walls thicken

(“hardening of the arteries”) plaque

builds up inside your arteries.

Causes: 1) exact cause is unknown

2) High amounts of fats and cholesterol in the blood

3) High blood pressure 4) High blood sugar

5) Smoking

Symptoms: none until severely narrows or blocks an artery

Treatments: changing diet (DASH), stop smoking, take medications. Medical procedures (like angioplasty)

What is cholesterol?: waxy, fat-like substance that’s found in all cells of the body.

ArrhythmiaDescription: problem with the rate or rhythm of the heartbeat

Causes: electrical signals that control the heartbeat are delayed or blocked

Symptoms:

1) Heart palpitations

2) A slow heartbeat

3) An irregular heartbeat

4) Feeling pauses between heartbeats

Treatment: medicine, procedures,

and surgery (pacemakers)

What is atrial fribillation?

Most common type of A-Fib. Involves a very fast/irregular contraction of atria.

Normal Heart Rhythm

Arrhythmia

StrokeDescription: A stroke occurs if the flow of oxygen-rich blood to a portion of the brain is blocked.

What causes an Ischemic Stroke?: Artery that supplies oxygen-rich blood to the brain becomes blocked. *Most common type

What causes Hemorrhagic stroke? Artery in the brain leaks blood or bursts open

Symptoms:

1)numb on one side 3) confusion

2)slurred speech 4) sudden weakness

5) Severe Headache

Treatment: Get to a hospital immediately!

medicines – blood thinners, surgery – to open blockage

Think someone is having a Stroke?

The Heart

Pump Your Blood Song 2 min.

St. Joseph’s Aspirin Commercial

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