Cardiovascular System

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CardiovascularSystem
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Cardiovascular System

• Cardio heart
• Vascular vessels

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Circulatory (Cardiovascular) System

• Made up of heart, vessels, and blood

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Three Types of Blood Vessels

• Arteries - move
• blood away from
• the heart

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Three Types of Blood Vessels

• Arteries - move blood
• away from the heart
• Veins - move blood
• toward the heart

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Three Types of Blood Vessels

• Arteries - move blood away from the heart
• Veins - move blood toward the heart
• Capillaries -
• microscopic blood
• vessels that connect
• arteries and veins

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Functions of the Blood

• Carries oxygen from lungs to all body cells and
  removes carbon dioxide from the cells

Red blood cell
White blood cell
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Functions of the Blood

• Red blood cells contain hemoglobin which
  combines with oxygen. These cells deliver oxygen
  to the body.
• Their disc shape helps them squeeze through
  vessels.
• They wear out and are replaced every four months.
  New red blood cells are produced in the bone
  marrow.

Red blood cell
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Functions of the Blood

• Carries waste products of cell activity to the
  kidneys to be removed from the body

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Functions of the Blood

• Transports nutrients from the digestive system to
  body cells

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Functions of the Blood

• Materials in the blood help fight infection and
  heal wounds (white blood cells and platelets).

White blood cell fights foreign invaders
Platelets help blood form clots
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Functions of the Blood

• White blood cells are generally larger than red
  blood cells. They can move out of your blood
  through the capillary walls into tissue fluid and
  lymph.
• They then travel around fighting disease. The
  white blood cells last 1320 days, after which
  they are destroyed by the lymphatic system.

White blood cell fights foreign invaders
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Functions of the Blood

• Platelets are irregularly-shaped, colorless
  bodies that wear out within 510 days
• Their sticky surface lets them, along with
  calcium, vitamin K, and fibrinogen, form clots to
  stop bleeding.

Platelets help blood form clots
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Which two substances does the blood transport
away from body cells?

1. Oxygen carbon dioxide
2. Carbon dioxide waste
3. Nutrients waste
4. Oxygen nutrients

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What parts of the blood help fight off disease
and heal injuries?

1. White blood cells platelets
2. Red blood cells platelets
3. White blood cells red blood cells
4. White blood cells plasma

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Which is not a function of the circulatory system?

1. Carry nutrients oxygen to body cells
2. Carry carbon dioxide waste away from body cells
3. Attack disease-causing bacteria
4. Produce chemicals that control body processes

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