Cardiovascular System Basics
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Questions and Answers

What is the primary function of the cardiovascular system?

  • To filter out toxins from the blood
  • To produce hormones and enzymes
  • To regulate body temperature
  • To deliver oxygen and nutrients to cells and remove waste products (correct)
  • Which type of blood vessels carry oxygenated blood away from the heart?

  • Capillaries
  • Lymphatic vessels
  • Arteries (correct)
  • Veins
  • What is the term for the pressure in the arteries when the heart beats?

  • Hypertension
  • Blood pressure
  • Systolic pressure (correct)
  • Diastolic pressure
  • What is the function of baroreceptors in the regulation of blood flow?

    <p>To detect changes in blood pressure</p> Signup and view all the answers

    Which system regulates heart rate and blood vessel diameter?

    <p>Autonomic nervous system</p> Signup and view all the answers

    What is the term for the circulation of blood from the heart to the lungs to pick up oxygen?

    <p>Pulmonary circulation</p> Signup and view all the answers

    Study Notes

    Definition and Function

    • The cardiovascular system, also known as the circulatory system, is a network of organs and vessels that transport blood throughout the body.
    • Its primary function is to deliver oxygen and nutrients to cells and remove waste products.

    Components

    • Heart: a muscular organ that pumps blood throughout the body
    • Arteries: blood vessels that carry oxygenated blood away from the heart
    • Veins: blood vessels that carry deoxygenated blood back to the heart
    • Capillaries: tiny blood vessels where oxygen and nutrients are exchanged with cells
    • Blood: a liquid tissue that transports oxygen, nutrients, and waste products

    Blood Flow

    • Pulmonary circulation: blood flows from the heart to the lungs to pick up oxygen
    • Systemic circulation: blood flows from the heart to the rest of the body to deliver oxygen and nutrients

    Blood Pressure

    • Systolic pressure: the pressure in the arteries when the heart beats
    • Diastolic pressure: the pressure in the arteries between beats
    • Hypertension: high blood pressure, a major risk factor for cardiovascular disease

    Blood Vessels

    • Elastic arteries: arteries that stretch to accommodate blood pressure
    • Muscular arteries: arteries that constrict or dilate to regulate blood pressure
    • Veins: have one-way valves to prevent backflow of blood

    Regulation of Blood Flow

    • Autonomic nervous system: regulates heart rate and blood vessel diameter
    • Baroreceptors: sensors that detect changes in blood pressure
    • Chemoreceptors: sensors that detect changes in oxygen and carbon dioxide levels

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    Description

    Learn about the structure and function of the cardiovascular system, including the heart, blood vessels, and blood flow. Understand blood pressure, circulation, and regulation of blood flow.

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