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Cardiovascular System. Overview of the Cardiovascular System. Consists of the Heart , Blood Vessels, and Blood of the body. The Heart beats over 100,000x each day. The heart pumps ~1,000 gallons of blood through 60,000 miles of vessels.

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overview of the cardiovascular system
Overview of the Cardiovascular System
  • Consists of the Heart, Blood Vessels, and Blood of the body.
  • The Heart beats over 100,000x each day.
  • The heart pumps ~1,000 gallons of blood through 60,000 miles of vessels.
  • Function: Provide oxygen & nutrients to the cells and eliminate waste.
    • Transports Hormones
    • Regulates Body Temp.
    • Immune Response
    • Water Balance
structures of the cardiovascular system
Structures of the Cardiovascular System
  • Blood Vessels
    • Arteries: Carry blood away from the heart.
    • Veins: Carry blood toward the hearts.
    • Capillaries: Small blood vessels that terminate on organs and are a point of gas exchange in the body.
structures of the cardiovascular system1
Structures of the Cardiovascular System
  • The Heart
    • It is a hollow muscular pump.
    • Located in the thoracic cavity.
    • 2/3rds of the heart lies to the left of the mid-line.
    • It is about the size of a clenched fist.
    • Pericardium- Sac of connective tissue that covers and protects the heart.
heart chambers
Heart Chambers
  • The human heart contains 4 chambers
    • 2 Atria (right & left), the superior chambers.
    • 2 Ventricles ( right & left), the inferior chambers.
right atrium
Right Atrium
  • Receives unoxygenated blood from all areas of the body
  • Pumps blood into the right ventricle through the Tricuspid Valve (three cusps).
  • Collects blood using three vessels:
    • Superior Vena Cava-Comes from regions above the heart (upper extremities).
    • Inferior Vena Cava- Comes from regions below the heart. (lower extremities)
    • Coronary Sinus- Collects blood from the heart wall.
right ventricle
Right Ventricle
  • Receives unoxygenated blood from the right atrium.
  • Pushes blood through the pulmonary valve to the pulmonary arteries.
  • Blood is carried through the pulmonary arteries to the lungs.
left atrium
Left Atrium
  • Collects oxygenated blood from the lungs.
  • Blood comes from 4 pulmonary veins.
  • Pumps blood into the left ventricle through the Mitral Valve (bicuspid, 2 cusps)
left ventricle
Left Ventricle
  • Receives oxygenated blood from the left atrium
  • Pumps blood through the aortic valve into the Aorta.
  • The Aorta divides and carries oxygenated blood to all areas of the body.
  • Coronary Arteries: Supplies oxygenated blood to the heart wall.
heart etc
Heart Etc.
  • Septum- Separates the heart chambers(one atrial, one ventricle).
  • Atrioventricle Valves (Av Valve) controlled by muscle (papillary), between chambers
    • Tricuspid
    • Mitral (most commonly leaks)
    • Heart Murmur- Leaky valve
  • Semilunar Valves Controlled by pressure, between ventricle and vessels.
    • Pulmonary
    • Aortic