Human Heart Anatomy and Function
20 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the formula for calculating cardiac output (CO) according to the text?

  • CO = SV * HR (correct)
  • CO = ESV - EDV
  • CO = HR - SV
  • CO = HR / SV
  • Which factor can increase HR by shortening repolarization according to the text?

  • Increasing calcium ions (correct)
  • Acetylcholine
  • Hypoxia
  • Nicotine
  • What is the normal stroke volume for a 150 lbs individual based on the information provided?

  • 90 ml
  • 30 ml
  • 50 ml
  • 70 ml (correct)
  • How is ejection fraction (EF) calculated according to the information given?

    <p>EF = SV / EDV</p> Signup and view all the answers

    What is the term used to describe the difference between maximum cardiac output (CO) and resting CO?

    <p>Cardiac Reserve</p> Signup and view all the answers

    Which neural stimulation decreases heart rate by releasing acetylcholine?

    <p>Parasympathetic stimulation</p> Signup and view all the answers

    Where is the heart located in the body?

    <p>Between the lungs in the mediastinum</p> Signup and view all the answers

    Which statement is true about the pericardium?

    <p>It separates the heart from other structures</p> Signup and view all the answers

    What is the size of the heart compared to a human's body part?

    <p>The size of a fist</p> Signup and view all the answers

    Which type of athletes are likely to experience cardiac hypertrophy?

    <p>Aerobic athletes</p> Signup and view all the answers

    What is the function of the pulmonary circuit?

    <p>To let the blood get oxygen</p> Signup and view all the answers

    Which chamber of the heart expels blood?

    <p>Ventricles</p> Signup and view all the answers

    What is the function of the atrioventricular valves in the heart?

    <p>Prevent backflow from the ventricles into the atria</p> Signup and view all the answers

    Where are the papillary muscles located and what is their function?

    <p>In the ventricles, preventing backflow by pulling on chordae tendineae</p> Signup and view all the answers

    What is the role of the SA node in the heart?

    <p>Establishing the cardiac rhythm</p> Signup and view all the answers

    Which element is responsible for causing the action potential (electrical current) in cardiac muscle?

    <p>Sodium (Na)</p> Signup and view all the answers

    During which phase of the cardiac cycle do semilunar valves close and atrioventricular valves remain closed?

    <p>Isovolumic ventricular relaxation</p> Signup and view all the answers

    What is the name for the volume of blood left in the heart that didn't get pumped out?

    <p>End systolic volume</p> Signup and view all the answers

    What does an EKG with 10 electrodes provide that an EKG with fewer electrodes does not?

    <p>Better diagnosis of cardiac problems</p> Signup and view all the answers

    What is the function of intercalated discs in cardiac muscle cells?

    <p>Hold muscle cells together and allow ion flow between cells</p> Signup and view all the answers

    More Like This

    Human Heart Anatomy Quiz
    13 questions

    Human Heart Anatomy Quiz

    AudibleFresno2256 avatar
    AudibleFresno2256
    Human Heart Anatomy Quiz
    3 questions
    Use Quizgecko on...
    Browser
    Browser