HUMAN ANATOMY
6th Edition
ISBN: 9781260986037
Author: SALADIN
Publisher: MCG
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Chapter 20.4, Problem 12BYGO
Summary Introduction
To write:
The reason and importance of more developed organelles in the cardiac muscle than in skeletal muscle. Also the reason and importance of less developed organelles in the cardiac muscle than in skeletal muscle.
Introduction:
The heart is the central organ of the circulatory system. It consists of four chambers: Two upper chambers or atria and two lower chambers or ventricles. Blood passes across a valve before parting each heart chamber.
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Puzzle It Out Cardiac Terms
Complete the following crossword puzzle to test your knowledge of terms used in the study of the heart.
10
11
ACROSS
DOWN
1. The heart's inner layer
4. The study of the heart and the treatment of
related disorders
5. Thin layer of squamous epithelial cells covering
the heart's surface
7. Space berween the lungs and beneath the sternum
where the heart resides
2. Unique ability of the cardiac muscle to contract
without nervous stimulation
3. Where the great vessels enter and leave the heart
6. Double-walled sac surrounding the heart and root
of the great vessels
8. The period of cardiac muscle relaxation
11. Two upper chambers of the heart
9. Pointed end of the heart
10. Two lower chambers of the heart
12. Phasc of the cardiac cycle when the ventricles
contract
13. Middle layer of the heart wall
186 Chapter 15 Heart
Microscopic Anatomy of Cardiac Muscle
10. Describe the structure of the intercalated discs.
What role does this structure play in the function of cardiac muscle?
Fill in the Gaps Cardiac Output
Place one word in each blank line to complete the following sentences. Choose from the words listed in the Word
Bank. (Hint: Not all the words will be used; also, one word will be used more than once.)
CARDIAC OUTPUT
FIVE
PARASYMPATHETIC
SYMPATHETIC
DECREASES
HEART RATE
SIX
TEN
EIGHT
INCREASES
STROKE VOLUME
1. The amount of blood ejected with cach heartbeat is called .
2. The amount of blood the heart pumps in 1 minute is called.
3. To determine cardiac output, you would multiply -
by
4. The average resting cardiac output is berween.
liters per minute.
and
5. When heart rate increases, cardiac output.
6. The nervous system can cause the heart rate to increase by sending impulses via the -
nervous system.
7. The
-nervous system sends signals to slow the heart rate.
lluminate the Truth Stroke Volume
Highlight the correct word in each of the following sentences.
1. (Preload)(Afterload) is the amount of tension, or stretch, in the ventricular muscle just…
Chapter 20 Solutions
HUMAN ANATOMY
Ch. 20.1 - Answer the following questions to test you...Ch. 20.2 - Parts of the fibrous skeleton sometimes become...Ch. 20.2 - Prob. 3BYGOCh. 20.2 - Prob. 4BYGOCh. 20.2 - Answer the following questions to test you...Ch. 20.3 - Answer the following questions to test you...Ch. 20.3 - Prob. 7BYGOCh. 20.3 - Prob. 8BYGOCh. 20.3 - Answer the following questions to test you...Ch. 20.4 - Why should mitochondria be large and more abundant...
Ch. 20.4 - Answer the following questions to test you...Ch. 20.4 - Answer the following questions to test you...Ch. 20.4 - Prob. 12BYGOCh. 20.4 - Prob. 13BYGOCh. 20.4 - Prob. 14BYGOCh. 20.5 - Answer the following questions to test you...Ch. 20.5 - Answer the following questions to test you...Ch. 20.5 - Prob. 17BYGOCh. 20.5 - Answer the following questions to test you...Ch. 20 - Prob. 20.1.1AYLOCh. 20 - Prob. 20.1.2AYLOCh. 20 - Prob. 20.1.3AYLOCh. 20 - To test your knowledge, discuss the following...Ch. 20 - To test your knowledge, discuss the following...Ch. 20 - Prob. 20.1.6AYLOCh. 20 - Prob. 20.2.1AYLOCh. 20 - Prob. 20.2.2AYLOCh. 20 - Prob. 20.2.3AYLOCh. 20 - Reasons for the differences in muscularity between...Ch. 20 - Prob. 20.2.5AYLOCh. 20 - Prob. 20.2.6AYLOCh. 20 - The names, locations, and anatomy of the two...Ch. 20 - Prob. 20.2.8AYLOCh. 20 - Prob. 20.2.9AYLOCh. 20 - Prob. 20.2.10AYLOCh. 20 - Prob. 20.3.1AYLOCh. 20 - Prob. 20.3.2AYLOCh. 20 - Prob. 20.3.3AYLOCh. 20 - Prob. 20.3.4AYLOCh. 20 - Prob. 20.4.1AYLOCh. 20 - Prob. 20.4.2AYLOCh. 20 - Prob. 20.4.3AYLOCh. 20 - The Coronary Conduction System and Cardiac...Ch. 20 - Prob. 20.4.5AYLOCh. 20 - Prob. 20.5.1AYLOCh. 20 - Prob. 20.5.2AYLOCh. 20 - Prob. 20.5.3AYLOCh. 20 - Prob. 20.5.4AYLOCh. 20 - Prob. 20.5.5AYLOCh. 20 - Prob. 1TYRCh. 20 - To get from the right atrium to the right...Ch. 20 - There is/are_________ pulmonary vein(s) emptying...Ch. 20 - Prob. 4TYRCh. 20 - Prob. 5TYRCh. 20 - These are some of the points that the blood passes...Ch. 20 - The ascending aorta and pulmonary trunk develop...Ch. 20 - Prob. 8TYRCh. 20 - Blood in the anterior interventricular branch of...Ch. 20 - Which of these is not characteristic of the heart...Ch. 20 - Prob. 11TYRCh. 20 - The circulatory route from aorta to the venae...Ch. 20 - The circumflex branch of the left coronary artery...Ch. 20 - The finest passages through which electical...Ch. 20 - Electrical signal pass quickly from one...Ch. 20 - The abnormal bulging of the left AV valve into the...Ch. 20 - Prob. 17TYRCh. 20 - Prob. 18TYRCh. 20 - Prob. 19TYRCh. 20 - Prob. 20TYRCh. 20 - Prob. 1BYMVCh. 20 - Prob. 2BYMVCh. 20 - Prob. 3BYMVCh. 20 - Prob. 4BYMVCh. 20 - Prob. 5BYMVCh. 20 - Prob. 6BYMVCh. 20 - Prob. 7BYMVCh. 20 - Prob. 8BYMVCh. 20 - Prob. 9BYMVCh. 20 - Prob. 10BYMVCh. 20 - Prob. 1WWWTSCh. 20 - Prob. 2WWWTSCh. 20 - Prob. 3WWWTSCh. 20 - Briefly explain why each of the following...Ch. 20 - Briefly explain why each of the following...Ch. 20 - Prob. 6WWWTSCh. 20 - Briefly explain why each of the following...Ch. 20 - Prob. 8WWWTSCh. 20 - Prob. 9WWWTSCh. 20 - Prob. 10WWWTSCh. 20 - Prob. 1TYCCh. 20 - Becky, age 2, was born with a hole in her...Ch. 20 - Prob. 3TYCCh. 20 - Prob. 4TYCCh. 20 - Prob. 5TYC
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- * Cardiac muscle 1. Where are intercalated discs located?What is their function? 2. Describe two more characteristics of cardiac muscle?arrow_forwardWhat is a neuro-muscular junction? Please explain its function.2.- What is a chief muscle? Please give an example.3.- Sartorious muscle: Please explain its principal function.4.- Where is located the primary heart pacemaker? What is its function? What is the normal heart rate for adults?5.- Please name the vessels originated from the aortic arc.6.- What is the Portal vein, and its importance? Please name the vessels that give origin to the Portal Vein.7.- Which structures see deoxygenated blood in the pulmonary circuit?8.- What are the main functions of the capillaries?arrow_forward5. W hich structure is present in the right ventricle of the sheep's heart, but not in the left ventricle? Make a labeled sketch of cardiac muscle as you observed it under the microscope. Label the nucleus, intercalated discs, sarcolemma, and striations. 6. Cardiac Muscle Magnification: 7. Identify two differences between the structure of cardiac muscle tissue and skeletal muscle tissue Cardiac muscle tissue Skeletal muscle tissuearrow_forward
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