4. A change in pulse pressure can be seen in a variety of medical conditions. What wouldyou expect to happen to the pulse pressure in the following examples?a. In atherosclerosis there is a hardening of the arterial walls. Explainb. A damaged aortic semilunar valve does not seal properly and allows blood to flowback into the ventricle during diastole. ExplainEXTENSIONS1. Exercise for varying lengths of time and compare the blood pressure and pulse readingstaken after each exercise period. You can run around the building, and attach the cuffupon returning.2. Perform different types of exercise for the same amount of time and compare the bloodpressure and pulse readings taken after each type of exercise.3. Measure blood pressure 5, 10, and 15 minutes after stopping exercise, and comparereadings as your heart returns to resting heart rate.4. Measure blood pressure while lifting a weight with the opposite arm.

4a. In atherosclerosis, the arterial walls become hardened and less elastic due to the buildup of…

Answered: 4. A change in pulse pressure can be…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter10: The Blood Vessels And Blood Pressure

Section: Chapter Questions

Problem 11RE

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Similar questions

Characteristics of veins and venules are: a. thick walls. b. large muscle mass in the walls. c. a large quantity of elastin in the walls. d. low blood volume compared with arteries. e. one-way valves to prevent backflow of blood.
An electrical difference across the fibers of the heart is called the A. Absolute refractory period B. Resting membrane potential C. Action potential D. Depolarization
The heartbeat includes: a. the systole when the heart relaxes and fills. b. the diastole when the heart contracts and empties. c. pressure that causes the AV valves to open, filling the ventricles. d. rising pressure in the ventricles to open the AV valves and close the SL valves. e. the lub sound when the SL valves open and the dub sound when the AV valves close.
1. The source of the electrical currents that you measured on the skin throughout a normal electrocardiogram is: a. regional differences in depolarization state between parts of the myocardium b. The SA node cells c. the opening and closing of the tricuspid and bicuspid valves d. depolarizations of the muscle and nerve cells close to the electrode site e. The AV node cells 2. Release or discharge from which of the following is likely to produce a slowing in the rate at which the AV node transmits a depolarization? a. Your coffee cup (caffeine) b. the posterior lobe of the pituitary gland (Oxytocin) c. the sympathetic nervous system d. the parasympathetic nervous system (vagus nerve) e. the medulla of the adrenal gland (epinephrine) 3.Which of the following is unlikely to affect the force of contraction of an individual ventricular myocyte (muscle cell)? a. the amount of…
5. SHEEP HEART DISSECTION a. Explain the difference in size and wall thickness of the ventricles. b. Describe the function of the chordae tendineae. c. Circle the terms that describe the chordae tendineae. elastic nonelastic thick thin pliable stiff opaque transparent d. Circle the terms that apply to the semilunar valves. elastic nonelastic thick thin pliable stiff opaque transparent e. Circle the terms that apply to the atrioventricular valves. elastic nonelastic thick thin pliable stiff opaque transparent
1. In ventricular fibrillation, there is no pattern visible in the EKG. What does this mean in terms of contraction? A. contraction will have no visible pattern either and the ventricles will be unable to eject much blood B. the pattern doesn't matter; contraction of the ventricles will not be affected as long as ventricular myocytes continue to depolarize and depolarize C. the ventricular myocytes will be unable to contract C. contraction will become constant and ventricles will be unable to fill with blood 2. Which structure follows depolarization of the SA Node and atria in the cardiac conduction system? A.ventricular myocytes B.AV Node C.left and right bundle branches D.AV bundle E Purkinje fibers 3. Hypertension increases afterload for the heart which in turn A. increases Stroke Volume B. decreases Stroke Volume C.increases Cardiac Output D.increases Venous Return
6. Describe the parts of the electrocardiogram (ECG) and explain how these electrical events are related to the mechanical events of the cardiac cycle. Reference the Wigger’s diagram. Start at the P-wave and go through to the T-wave. Make sure to clearly state what each wave, interval, and segment represent. Make sure to clearly state the general rule concerning the timing of electrical and mechanical events as well as give specific examples. Mention P wave, QRS complex, T wave, PR interval, R-R interval, PR segment, ST segment, conduction system of the heart, autorhythmic cardiac cells, contractile cardiac cells, depolarization, repolarization, atria, ventricles, atrioventricular node.
1. Match the heart structure with the description. Mediastinum A. The thinner, more delicate membrane that forms a double layer around the heart. Арех. B. Middle layer of the heart responsible for the pumping action of the heart and is composed of cardiac muscle tissue C. Valve located between the right atrium and right ventricle - closes to prevent blood from going back into right atrium Fibrous pericardium Serous pericardium D. Anatomical region that extends from the stemum to the vertebral column, from the first rib to the diaphragm, and between the lungs. Location of the heart. Epicardium E. Chamber that receives deoxygenated blood from the right atrium and pumps it out to the pulmonary trunk through the pulmonary semilunar valve. F. Smooth, innermost layer of the heart wall in direct contact with the blood being pumped. Myocardium Endocardium G. Wrinkled pouch like structure on the anterior surface of each atrium - increase the capacity of the atria Auricle H. The pointed tip of…
17. Match the ECG wave information with the appropriate action potential in the following columns: a.P wave e.Depolarization of the AV node b.QRS complex f.Repolarization of ventricles c.PR segment g.Depolarization of ventricles d.T wave h.Depolarization of the atria Match the itmes in the left columns to the right columns.

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