IFS 1 Exam 1 Study Guide
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Questions and Answers

What is the primary function of the heart valves?

  • To mix oxygenated and deoxygenated blood
  • To ensure unidirectional blood flow (correct)
  • To regulate heart rate
  • To increase blood pressure during contraction
  • Which valve is located between the right atrium and the right ventricle?

  • Pulmonary Semilunar Valve
  • Bicuspid (Mitral) Valve
  • Tricuspid Valve (correct)
  • Aortic Semilunar Valve
  • What type of muscle cell makes up 99% of the myocardium?

  • Contractile Cells (correct)
  • Autonomous Cells
  • Pacemaker Cells
  • Nodal Fibers
  • Which of the following statements about autorhythmic cells is true?

    <p>They generate electrical impulses for contraction</p> Signup and view all the answers

    What is the primary artery responsible for supplying blood to the myocardium?

    <p>Left Coronary Artery</p> Signup and view all the answers

    Which of the following arteries is NOT a branch of the ascending aorta?

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

    Where does the venous blood from the heart return before entering the right atrium?

    <p>Coronary Sinus</p> Signup and view all the answers

    What is the significance of intercalated disks in cardiac muscle cells?

    <p>They enable synchronized contractions</p> Signup and view all the answers

    Which cardiac muscle cell type is responsible for generating spontaneous action potentials?

    <p>Autorhythmic Cells</p> Signup and view all the answers

    What is the primary function of calcium ions in contractile cardiac muscle cells?

    <p>Prolong the action potential after sodium influx</p> Signup and view all the answers

    Which artery is the first major branch off the aorta arch that primarily serves the head and neck region?

    <p>Brachiocephalic Trunk</p> Signup and view all the answers

    What is the significance of the delay between the electrical signal from the SA node to the AV node?

    <p>Allows atrial blood filling before contraction</p> Signup and view all the answers

    Which structure initiates the electrical signal responsible for the heart's rhythm?

    <p>SA Node</p> Signup and view all the answers

    What general body region does the descending aorta primarily serve?

    <p>Thorax and Abdomen</p> Signup and view all the answers

    Which coronary artery gives rise to the posterior interventricular artery?

    <p>Right Coronary Artery</p> Signup and view all the answers

    What are the P Wave and P-R Segment in an ECG specifically indicative of?

    <p>Atrial Contraction</p> Signup and view all the answers

    What is the primary function of the left ventricle in the cardiovascular system?

    <p>To provide the driving force for blood pressure changes</p> Signup and view all the answers

    Which factor has the greatest effect on the resistance to blood flow according to Poiseulle’s Law?

    <p>Blood vessel diameter</p> Signup and view all the answers

    Which of the following is the correct pathway for blood flow from the heart to the body?

    <p>Left Atrium → Left Ventricle → Ascending Aorta</p> Signup and view all the answers

    Which hormones are primarily involved in causing vasodilation?

    <p>Nitric Oxide and Estrogen</p> Signup and view all the answers

    What is the primary impact of sympathetic control on heart rate?

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

    What is the typical numeric value for diastolic blood pressure in a healthy adult?

    <p>80 mmHg</p> Signup and view all the answers

    Which part of the cardiovascular system typically has lower pressure?

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

    Which branches arise directly from the aortic arch?

    <p>Brachiocephalic trunk, left common carotid artery, and left subclavian artery</p> Signup and view all the answers

    Study Notes

    IFS 1 Exam 1 Study Guide

    • Exam consists of 50 multiple choice questions, covering units 1 and 2. Equal distribution of questions per unit.
    • Key concepts include: movement origin, key players, factors affecting movement, and optimal movement.
    • Review unit introduction slides and associated video material to aid studying.

    Unit 1: Systems & Thorax

    • Overview of the Cardiovascular System
      • Understand the anatomy and function of major organs (heart, blood vessels, blood).
      • Heart Anatomy: Endocardium (internal), Myocardium (cardiac muscle), Epicardium (external), Pericardium (membranous sac).
      • Lung Anatomy: Superior and Inferior Lobes (left and right), Oblique and Horizontal Fissures (right lung only).
    • Cardiovascular System & Movement: How cardiovascular function impacts movement (increased heart rate to meet oxygen demands of muscles).
    • Blood Vessel Types:
      • Arteries: Vessels carrying blood away from the heart.
      • Veins: Vessels carrying blood back to the heart.
    • Heart Location & Relation to Other Thoracic Structures: Located in the ventral thorax, apex pointed toward the left, base behind sternum, anterior to esophagus and inferior to the trachea.

    Unit 2: Information Not Provided in OCR

    • Additional Information: The provided text contains information about the cardiovascular system and its relation to movement. It also covers the structure and pathway of blood flow through the heart and the body, as well as the pathways oxygenated and de-oxygenated blood follow. It also has information about valves and muscle types. Additional information not present in this OCR is needed for a complete study guide.

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    IFS 1 Exam 1 Study Guide PDF

    Description

    Prepare for the IFS 1 Exam 1 with this comprehensive study guide covering units 1 and 2. Focus on key concepts such as cardiovascular anatomy, movement origins, and factors affecting movement. Review introduction slides and video materials for effective studying.

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