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McKenzie Health Science 20 NAME:_________________ Lesson 11.2 Regulation of the Heart Objectives: 1. Describe the mechanisms that regulate the heart. 2. Describe different types of arrhythmia, or abnormal contractility conditions that can be detected via electrocardiogram. 3. Identify the components of the conduction system of the heart. Saskatchewan Outcome: “I can analyze the anatomy and physiology of a healthy human” Saskatchewan Indicators: “I can describe the anatomy (structure) and physiology (function) of the cardiovascular system” Before this lesson, try to answer the following questions: 1. What is the internal (intrinsic) mechanism that allows the heart to beat on its own? ANSWER:__________________________________________________________ __________ 2. What are the two external (extrinsic) systems that regulate the heart? ANSWER:__________________________________________________________ __________ Key Terms: Arrhythmia Atrial fibrillation atrioventricular node (AV node) baroreceptors bradycardia bundle of His depolarize heart block left bundle branches premature atrial contractions (PACs) premature ventricular contractions (PVCs) Purkinje fibers Repolarize Right bundle branches Sinoatrial node (SA node) Tachycardia Ventricular fibrillation Ventricular tachycardia References:
Transcript of msmckenzie.weebly.com€¦ · Web viewLesson 11.2 Regulation of the Heart Objectives: Describe the...
McKenzie Health Science 20 NAME:_________________
Lesson 11.2 Regulation of the Heart
Objectives:1. Describe the mechanisms that regulate the heart.2. Describe different types of arrhythmia, or abnormal contractility conditions that can be detected
via electrocardiogram.3. Identify the components of the conduction system of the heart.
Saskatchewan Outcome:“I can analyze the anatomy and physiology of a healthy human”
Saskatchewan Indicators:“I can describe the anatomy (structure) and physiology (function) of the cardiovascular system”
Before this lesson, try to answer the following questions:
1. What is the internal (intrinsic) mechanism that allows the heart to beat on its own?
ANSWER:____________________________________________________________________
2. What are the two external (extrinsic) systems that regulate the heart? ANSWER:____________________________________________________________________
Key Terms: Arrhythmia Atrial fibrillation atrioventricular node (AV node) baroreceptors bradycardia bundle of His depolarize heart block left bundle branches premature atrial contractions
(PACs) premature ventricular
contractions (PVCs) Purkinje fibers
Repolarize Right bundle branches Sinoatrial node (SA node) Tachycardia Ventricular fibrillation Ventricular tachycardia
References: Notes & handouts Textbook Pages: 375 – 381 Study Guide Pages: 162 – 164
McKenzie Health Science 20 NAME:_________________
11.2 Regulation of the Heart
Internal Control (Intrinsic)
External Control (Extrinsic)
McKenzie Health Science 20 NAME:_________________
The Conduction System
The Electrocardiogram
McKenzie Health Science 20 NAME:_________________
Normal Sinus Rhythm
Sinus Bradycardia
Sinus Tachycardia
Premature Atrial Contractions (PACs)
Atrial Fibrillation
McKenzie Health Science 20 NAME:_________________
Premature Ventricular Contractions (PVCs)
Ventricular tachycardia (VT)
Ventricular fibrillation (VF)
Heart Block
Complete the Lesson1. WATCH: The Heart, Part 2- Heart Throbs: Crash Course A&P #26 (https://www.youtube.com/watch?v=X9ZZ6tcxArI)2. Read p. 375 - 381 in your textbook3. Complete the “Check Your Understanding” Questions, p. 376, 377, 3804. Correct your “Before this lesson” answers5. Complete #1-5, p. 3816. Study Guide pages 162 and 164 (handout)
