KINESIOLOGY

CARDIOVASCULAR ANATOMY AND FUNCTION

Major Cardiovascular Functions

Delivery

Removal

Transport

Maintenance

Prevention

After blood has left the lungs, which chamber of the heart does it enter?

Where does the left ventricle pump blood to?

Which chamber of the heart does blood return to that has been through the systemic system?

BLOOD FLOW THROUGH THE HEART

Cardiovascular System

Pulmonary Circuit To the lungs and back

Systemic Circuit To the rest of the body

and back

THE HEART

THE CHAMBERS OF THE HEART

The atria are smaller than the ventricles

Why is the left ventricle thicker than the right ventricle?

INTERCALATED DISKS

What are intercalated disks and what is their function?

THE INTRINSIC CONDUCTION SYSTEM

THE INTRINSIC CONDUCTION SYSTEM

• What is the function of the SA node?• What is the function of the AV node? • The AV bundle (bundle of His)?• Bundle branches: right and left?• Purkinje fibers?

Electrocardiogram (ECG)

Depolarization and Repolarization. What are they?

The P wave?

The QRS complex?

The T wave?

Electrical activity of the heart increases during both

PHASES OF THE RESTING ECG

Atrial repolarization

PHASES OF THE RESTING ECG

P QRS

CONTROL OF THE HEART

Parasympathetic Nervous System.

Sympathetic Nervous System. Epinephrine and norepinephrine.

CARDIAC TERMS

• Heart Rate (40 million beats per year)• Bradycardia• Tachycardia

• Stroke Volume• Cardiac Output (1,400 gallons a day)• Cardiac Cycle (next slide)

CARDIAC CYCLE

Events that occur between two consecutive heartbeats (systole to systole)

Diastole?

Systole?

THE VASCULAR SYSTEM

Arteries

Arterioles

Capillaries

Venules

Veins

100,000 miles of blood vessels

ARTERIES

ARTERIOLES

CAPILLARIES

VEINS

CORONARY CIRCULATION

CORONARY ARTERIES

•Right Anterior Descending Artery

•Left Anterior Descending Artery

•Circumflex Artery

Coronary Artery Disease

Coronary Artery Disease

THE BLOOD

Red Blood Cells Hematocrit Blood Pressure

Red Blood Cells

Hemaglobin

Hematocrit

Blood Pressure

What is a normal systolic blood pressure reading?

What is a normal diastolic blood pressure reading?

Systolic and Diastolic. What’s the difference?

Blood Pressure

Blood Pressure