Human Heart and Lung Anatomy Quiz
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Questions and Answers

Match the following heart structures with their functions, using the provided word bank:

Left Ventricle = Pumps oxygenated blood to the entire body Mitral Valve = Prevents backflow into the left atrium SA Node = Initiates the heartbeat Pulmonary Veins = Receives oxygenated blood from the lungs Aorta = Main artery leaving the heart Tricuspid Valve = Prevents backflow into the right atrium Pulmonary Artery = Carries oxygen-poor blood to the lungs Right Atrium = Receives oxygen-poor blood from the body Left Atrium = Receives oxygenated blood from the lungs Right Ventricle = Pumps oxygen-poor blood to the lungs

The primary function of the _______ is to facilitate gas exchange, absorbing _______ and releasing _______.

lungs, oxygen, carbon dioxide

What is a muscle located below the lungs that plays a crucial role in breathing?

diaphragm

During _______, the diaphragm _______ to increase the space in the chest cavity, allowing air to flow into the lungs.

<p>inhalation, expands</p> Signup and view all the answers

When you breathe out during _______, the diaphragm _______, forcing air out of the lungs.

<p>exhalation, contracts</p> Signup and view all the answers

Tiny air sacs in the lungs called _______ are crucial for exchanging gases with the bloodstream.

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

The movement of the _______ helps protect the lungs and also aids in the breathing process.

<p>rib cage</p> Signup and view all the answers

To bring in more air, the lungs _______ as the diaphragm moves downward.

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

The expulsion of air during breathing involves the lungs and the _______ returning to their normal size.

<p>rib cage</p> Signup and view all the answers

_______ is the process of taking air into the lungs, while _______ is the process of expelling air out.

<p>inhalation, exhalation</p> Signup and view all the answers

The exchange of _______ and _______ occurs in the alveoli during the breathing process.

<p>oxygen, carbon dioxide</p> Signup and view all the answers

What is the SA node commonly referred to as, and why is it important?

<p>pacemaker of the heart, because it generates the electrical impulses that regulate the heartbeat</p> Signup and view all the answers

Where is the SA node located in the heart?

<p>In the right atrium of the heart</p> Signup and view all the answers

What type of signals does the SA node generate to regulate the heartbeat?

<p>electrical impulses</p> Signup and view all the answers

After the SA node generates an impulse, where does the electrical signal first spread?

<p>through the atria</p> Signup and view all the answers

What happens to the atria when they receive the electrical impulse from the SA node?

<p>the atria contract</p> Signup and view all the answers

After the right atria contract, where does the electrical signal travel next?

<p>to the AV node</p> Signup and view all the answers

Why does the AV node delay the signal before sending it to the ventricles?

<p>to ensure the ventricles fill with blood before contracting</p> Signup and view all the answers

What happens in the ventricles after they receive the electrical impulse?

<p>the ventricles contract</p> Signup and view all the answers

How does the SA node regulate heart rate under normal conditions?

<p>by adjusting the rate of electrical impulse generation</p> Signup and view all the answers

What can occur if the SA node does not function properly?

<p>it can lead to arrhythmias, affecting the heart ability to pump blood effectively</p> Signup and view all the answers

A heart attack occurs when _______ to a part of the heart is blocked.

<p>blood flow</p> Signup and view all the answers

The blockage is often caused by a buildup of _______ in the coronary arteries.

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

One of the most common symptoms of a heart attack is _______ or discomfort.

<p>chest pain</p> Signup and view all the answers

Women may experience _______ symptoms such as unusual fatigue or indigestion-like pain.

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

A heart attack can lead to what?

<p>permanent damage or even death of heart tissue</p> Signup and view all the answers

Energy drinks can increase the risk of a heart attack by raising _______ and blood pressure.

<p>heart rate</p> Signup and view all the answers

Stimulants do what to the coronary arteries?

<p>Stimulants in energy drinks can cause the coronary arteries to narrow.</p> Signup and view all the answers

Energy drinks can also increase the risk of what?

<p>blood clots</p> Signup and view all the answers

What are three harmful chemicals found in cigarette smoke that negatively impact the heart?

<p>Nicotine, carbon monoxide, tar</p> Signup and view all the answers

How does nicotine affect heart rate and blood pressure?

<p>Nicotine affects heart rate and blood pressure by raising both, causing the heart to work harder.</p> Signup and view all the answers

What does carbon monoxide do to the body's oxygen supply?

<p>Carbon monoxide reduces the oxygen supply to the body by binding to hemoglobin in the blood.</p> Signup and view all the answers

How does cigarette smoke damage the lining of arteries?

<p>Cigarette smoke damages the lining of arteries by making them stiff and less elastic, promoting plaque buildup.</p> Signup and view all the answers

Why does smoking increase the risk of blood clots?

<p>Smoking increases the risk of blood clots, which can block arteries and lead to heart attacks or strokes.</p> Signup and view all the answers

What are the long-term risks of smoking on heart health?

<p>Long-term risks of smoking on heart health include increased risk of heart attacks, strokes, and chronic cardiovascular diseases.</p> Signup and view all the answers

How does vaping impact blood vessels differently than smoking?

<p>Vaping impacts blood vessels by damaging the inner lining, which makes them prone to atherosclerosis.</p> Signup and view all the answers

What is atherosclerosis, and how does vaping contribute to it?

<p>Atherosclerosis is a condition where plaque builds up inside the arteries, and vaping contributes to it by damaging blood vessels and promoting plaque buildup.</p> Signup and view all the answers

What are free radicals, and how do they affect heart and lung tissues?

<p>Free radicals are unstable molecules that can damage cells and tissues, and vaping increases their production.</p> Signup and view all the answers

Why is Vitamin E acetate considered dangerous when inhaled?

<p>Vitamin E acetate is considered dangerous when inhaled because it is associated with severe lung injury known as EVALI (E-cigarette or Vaping-Associated Lung Injury).</p> Signup and view all the answers

What chemical in cigarette smoke binds to hemoglobin and reduces oxygen supply to the body?

<p>carbon monoxide</p> Signup and view all the answers

Why does smoking increase the risk of atherosclerosis?

<p>Inflammation (A)</p> Signup and view all the answers

What is the primary reason why cigarette smoke has a strong, lingering odor?

<p>tar and combustion byproducts</p> Signup and view all the answers

Vaping burns tobacco.

<p>False (B)</p> Signup and view all the answers

What toxic byproducts are released when vape liquids are heated?

<p>Formaldehyde and acrolein</p> Signup and view all the answers

Why is the smell of vaping less noticeable than cigarette smoke?

<p>No combustion means less odor</p> Signup and view all the answers

Vaping aerosols leave tar or ash residue.

<p>False (B)</p> Signup and view all the answers

Aerosols from vaping are harmless.

<p>False (B)</p> Signup and view all the answers

What does vaping damage?

<p>Damage to blood vessels and heart tissue (C)</p> Signup and view all the answers

How does vaping affect arteries?

<p>Weakens arteries and increases inflammation (A)</p> Signup and view all the answers

What condition linked to vaping involves serious lung damage and difficulty breathing?

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

Why do energy drinks increase the risk of heart attacks?

<p>Raise heart rate and blood pressure (D)</p> Signup and view all the answers

Why is Vitamin E acetate dangerous?

<p>It is toxic when inhaled</p> Signup and view all the answers

The amount of nicotine delivered by vaping is less than what is delivered by smoking.

<p>False (B)</p> Signup and view all the answers

Flashcards

Left Ventricle

Pumps oxygenated blood to the entire body.

Mitral Valve

Prevents backflow into the left atrium.

SA Node

Pacemaker of the heart that initiates the heartbeat.

Pulmonary Veins

Carries oxygenated blood from the lungs to the heart.

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Aorta

Main artery leaving the heart.

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Tricuspid Valve

Prevents backflow into the right atrium.

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Pulmonary Artery

Carries oxygen-poor blood to the lungs.

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Right Atrium

Receives oxygen-poor blood from the body.

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Left Atrium

Receives oxygenated blood from the lungs.

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Right Ventricle

Pumps oxygen-poor blood to the lungs.

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Diaphragm

A muscle below the lungs that helps breathing.

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Alveoli

Tiny air sacs in the lungs crucial for gas exchange.

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Inhalation

Process of taking air into the lungs.

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Exhalation

Process of expelling air out of the lungs.

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Heart Attack

Occurs when blood flow to part of the heart is blocked.

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Nicotine

A harmful chemical in cigarette smoke affecting heart rate.

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Carbon Monoxide

Reduces the body’s oxygen supply by binding to hemoglobin.

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Free Radicals

Unstable molecules that can damage cells and tissues.

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Atherosclerosis

Condition where plaque builds up inside arteries.

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EVALI

Lung injury associated with vaping.

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Energy Drinks

Can increase heart attack risk by raising heart rate.

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Plaque Buildup

Buildup of cholesterol and other substances in arteries.

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Tar

A harmful residue from burning tobacco.

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Blood Clots

Formed when blood thickens and solidifies.

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Inflammation

The body's response to injury potentially affecting heart health.

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Secondhand Smoke

Smoke inhaled involuntarily from burning tobacco.

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Oxidative Stress

An imbalance between free radicals and antioxidants.

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Vaping

Inhaling vapor produced by electronic cigarettes.

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Study Notes

Heart Anatomy and Function Matching

  • Left Ventricle: Pumps oxygenated blood to the entire body
  • Mitral Valve: Prevents backflow into the left atrium
  • SA Node: Initiates the heartbeat
  • Pulmonary Veins: Receives oxygenated blood from the lungs
  • Aorta: Main artery leaving the heart
  • Tricuspid Valve: Prevents backflow into the right atrium
  • Pulmonary Artery: Carries oxygen-poor blood to the lungs
  • Right Atrium: Receives oxygen-poor blood from the body
  • Left Atrium: Receives oxygenated blood from the lungs
  • Right Ventricle: Pumps oxygen-poor blood to the lungs

Lungs and Diaphragm Function Matching

  • Lungs, oxygen, carbon dioxide: Facilitates gas exchange; absorbs oxygen and releases carbon dioxide
  • Diaphragm: Muscle below the lungs; plays a crucial role in breathing
  • Inhalation: The process of taking air into the lungs; involves the diaphragm expanding and lowering
  • Exhalation: The process of expelling air from the lungs; involves the diaphragm contracting and rising

SA Node Questions

  • Function: The SA node is the pacemaker of the heart, generating electrical impulses that regulate the heartbeat
  • Location: Located in the right atrium
  • Signal Pathway: Electrical impulse first travels through the atria, then to the AV node, causing the ventricles to contract
  • Heart Rate Regulation: The SA node adjusts the rate of electrical impulse generation to regulate heart rate
  • Disorders: Malfunction can lead to arrhythmias which affect the heart's ability to pump blood effectively

Heart Attack

  • Definition: Occurs when blood flow to a part of the heart is blocked, typically due to plaque buildup in the coronary arteries
  • Symptoms: Common symptom is chest pain, but women might experience atypical symptoms like unusual fatigue or indigestion
  • Results: Can lead to permanent damage or death of heart tissue

Energy Drinks

  • Risks: Increase risk of heart attack by raising heart rate and blood pressure; stimulants can narrow coronary arteries, reducing blood flow; further increase the risk of blood clots

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Heart and Lungs Test Review PDF

Description

Test your knowledge on the anatomy and functions of the human heart and lungs. This quiz covers key components such as the chambers of the heart and the mechanics of breathing. Challenge yourself to match terms with their respective functions!

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