Skip to main content
Back

Chapter 14 Cardiac Physiology Study Guide – Step-by-Step Guidance

NotesPracticeVideo lessons

Study Guide - Smart Notes

Tailored notes based on your materials, expanded with key definitions, examples, and context.

Q1. List the functions of the cardiovascular system (CVS).

Background

Topic: Cardiovascular System Overview

This question tests your understanding of the primary roles the cardiovascular system plays in maintaining homeostasis and supporting body functions.

Key Concepts:

  • Transport of nutrients, gases, and wastes

  • Regulation of body temperature and pH

  • Protection via immune responses

Step-by-Step Guidance

  1. Think about how the CVS moves substances like oxygen, carbon dioxide, nutrients, and hormones throughout the body.

  2. Consider how the CVS helps regulate internal conditions, such as temperature and pH.

  3. Reflect on how the CVS contributes to immune defense and protection against blood loss.

Try solving on your own before revealing the answer!

Q2. Define the following: arteries (and arterioles), veins (and venules), atrium, ventricle, valves, septum, pulmonary arteries and veins, pulmonary circulation, aorta, superior vena cava, inferior vena cava, systemic circulation, hepatic portal vein.

Background

Topic: Cardiovascular Anatomy Terminology

This question checks your ability to accurately define and distinguish between key anatomical structures and pathways in the cardiovascular system.

Key Terms:

  • Arteries/Arterioles: Vessels carrying blood away from the heart

  • Veins/Venules: Vessels carrying blood toward the heart

  • Atrium/Ventricle: Heart chambers

  • Valves, Septum, Pulmonary/Systemic Circulation, etc.

Step-by-Step Guidance

  1. For each term, identify its location and function within the cardiovascular system.

  2. Differentiate between similar terms (e.g., arteries vs. veins, atrium vs. ventricle).

  3. Relate each structure to the overall flow of blood through the heart and body.

Try solving on your own before revealing the answer!

Q3. Understand Figure 14.1 and describe blood flow through the entire body.

Background

Topic: Blood Flow Pathway

This question tests your ability to trace the path of blood as it circulates through the heart, lungs, and systemic tissues.

Key Concepts:

  • Pulmonary and systemic circulation

  • Chambers and valves of the heart

  • Major vessels (aorta, vena cavae, pulmonary arteries/veins)

Step-by-Step Guidance

  1. Start with deoxygenated blood entering the right atrium from the body.

  2. Follow the blood through the right ventricle, pulmonary arteries, lungs, pulmonary veins, left atrium, and left ventricle.

  3. Continue tracing the path as oxygenated blood is pumped out to the systemic circulation via the aorta.

Try solving on your own before revealing the answer!

Q5. What is a pressure gradient? How do fluids flow in a pressure gradient?

Background

Topic: Pressure Gradients in Physiology

This question examines your understanding of how differences in pressure drive the movement of fluids, such as blood, in the body.

Key Terms and Formulas:

  • Pressure Gradient: The difference in pressure between two points

  • Flow: Movement from high to low pressure

Step-by-Step Guidance

  1. Define what a pressure gradient is in your own words.

  2. Explain the direction fluids move in response to a pressure gradient.

  3. Relate this concept to blood flow in the cardiovascular system.

Try solving on your own before revealing the answer!

Q7. What are the units of pressure in the CVS?

Background

Topic: Measurement of Pressure

This question tests your knowledge of the standard units used to measure blood pressure in physiology.

Key Terms:

  • Millimeters of mercury (mm Hg)

  • Other possible units: kilopascals (kPa), atmospheres (atm)

Step-by-Step Guidance

  1. Recall the most common unit used in clinical and physiological settings.

  2. List any alternative units that may be encountered in textbooks or research.

Try solving on your own before revealing the answer!

Q11. What is resistance in the CVS? How does blood flow respond to resistance?

Background

Topic: Hemodynamics – Resistance and Flow

This question tests your understanding of how resistance affects blood flow in vessels.

Key Terms and Formulas:

  • Resistance: Opposition to flow, often due to vessel diameter, length, and blood viscosity

  • Relationship:

Step-by-Step Guidance

  1. Define resistance in the context of blood vessels.

  2. Explain how changes in resistance affect the rate of blood flow, using the formula above.

  3. Consider what factors can increase or decrease resistance in the CVS.

Try solving on your own before revealing the answer!

Q15. Describe cardiac muscle tissue and cells and compare/contrast them to skeletal muscle tissue and cells.

Background

Topic: Muscle Tissue Types

This question asks you to identify the unique features of cardiac muscle and how they differ from skeletal muscle.

Key Concepts:

  • Structure: Striations, intercalated discs, branching fibers

  • Function: Involuntary vs. voluntary control, contraction mechanisms

Step-by-Step Guidance

  1. List the structural characteristics of cardiac muscle cells.

  2. Compare these features to those of skeletal muscle cells.

  3. Discuss differences in control (involuntary vs. voluntary) and contraction properties.

Try solving on your own before revealing the answer!

Q19. Describe the action potential of a myocardial contractile cell.

Background

Topic: Cardiac Electrophysiology

This question tests your understanding of the phases and ionic movements during the action potential in cardiac contractile cells.

Key Terms and Phases:

  • Depolarization, plateau, repolarization

  • Key ions: Na+, Ca2+, K+

Step-by-Step Guidance

  1. Identify the initial depolarization phase and which ion is responsible.

  2. Describe the plateau phase and the role of calcium ions.

  3. Explain the repolarization phase and which ion is involved.

Try solving on your own before revealing the answer!

Q22. Explain how electrical signals are generated in the heart.

Background

Topic: Cardiac Conduction System

This question examines your understanding of the origin of electrical impulses in the heart and their role in initiating contraction.

Key Concepts:

  • Pacemaker cells (SA node)

  • Spontaneous depolarization

  • Propagation of action potentials

Step-by-Step Guidance

  1. Identify the primary pacemaker of the heart and its location.

  2. Explain how pacemaker cells generate spontaneous action potentials.

  3. Describe how these signals spread to other parts of the heart.

Try solving on your own before revealing the answer!

Pearson Logo

Study Prep