Respiratory System Mechanics Ex 7 Act. 1, 2 and 3 PDF

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PhysioEx 7: Activity 1, 2, and 3....

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3/16/2021

Respiratory System Mechanics Ex 7: Act. 1, 2 and 3

Respiratory System Mechanics Ex 7: Act. 1, 2 and 3 Due: 11:59pm on Tuesday, March 16, 2021 You will receive no credit for items you complete after the assignment is due. Grading Policy

PhysioEx Exercise 7 > Activity 1: Overview and Pre-lab Quiz for Measuring Respiratory Volumes and Calculating Capacities Read the introduction and then answer the Pre-lab Quiz questions to the right. Exercise 7 > Activity 1: Measuring Respiratory Volumes and Calculating Capacities

Part A When the diaphragm contracts, _______. ANSWER:

it flattens out it lifts the rib cage it rises in the thoracic cavity it flattens out and it rises in the thoracic cavity

Correct

Part B Which of the following is a passive process? ANSWER:

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Respiratory System Mechanics Ex 7: Act. 1, 2 and 3

inspiration expiration during exercise inspiration during exercise expiration

Correct

Part C What is the driving force for the movement of air into the lungs? ANSWER:

the pressure gradient the pumping of the heart resistance generated in the blood vessels the diffusion of gases

Correct

Part D Which of the following describes the volume of air exhaled during passive breathing? ANSWER: tidal volume plus expiratory reserve volume tidal volume expiratory reserve volume tidal volume plus residual volume

Correct

Part E What is the difference between TLC and VC? ANSWER:

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Respiratory System Mechanics Ex 7: Act. 1, 2 and 3

VC includes RV; TLC does not include RV. TLC includes RV; VC does not include RV. VC includes TV; TLC does not include TV. TLC includes TV; VC does not include TV.

Correct

PhysioEx Exercise 7 > Activity 1: Activity and Post-lab Quiz for Measuring Respiratory Volumes and Calculating Capacities Click on the link or the image below to launch Exercise 7 > Activity 1: Measuring Respiratory Volumes and Calculating Capacities. Complete the Experiment and then answer the Post-lab Quiz questions to the right. Exercise 7 > Activity 1: Measuring Respiratory Volumes and Calculating Capacities

Part A The minute ventilation is _______. ANSWER:

the amount of air forcefully exhaled in 1 minute calculated by multiplying the rate of respiration times TV the amount of air forcefully inhaled in 1 minute the amount of air left in the lungs after 1 minute

Correct

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Respiratory System Mechanics Ex 7: Act. 1, 2 and 3

Part B Under normal conditions, the forced expiratory volume is normally _______. ANSWER:

75 - 85% of the total lung capacity 50 - 60% of the vital capacity 75 - 85% of the vital capacity 50 - 60% of the total lung capacity

Correct

Part C When the radius of the airway was decreased, _______. ANSWER:

expiratory reserve volume decreased residual volume decreased and expiratory reserve volume decreased vital capacity increased residual volume decreased tidal volume increased

Correct

Part D During forced exhalation, _______. ANSWER:

the diaphragm contracts the internal intercostals contract the diaphragm, the internal intercostals and the external intercostals contract the external intercostals contract

Correct

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Respiratory System Mechanics Ex 7: Act. 1, 2 and 3

PhysioEx Exercise 7 > Activity 2: Overview and Pre-lab Quiz for Comparative Spirometry Read the introduction and then answer the Pre-lab Quiz questions to the right. Exercise 7 > Activity 2: Comparative Spirometry

Part A Why is normal exhalation passive? ANSWER:

The diaphragm is involuntarily controlled. Respiratory muscles are relaxing and elastic tissue in the lungs recoils. Elastic tissue in the lungs recoils. Respiratory muscles are relaxing.

Correct

Part B With emphysema, the muscles that contract with normal exhalation include which of the following? ANSWER:

internal intercostals internal intercostals and abdominal muscles external intercostals external intercostals and abdominal muscles abdominal muscles

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Respiratory System Mechanics Ex 7: Act. 1, 2 and 3

Correct

Part C During an acute asthma attack, the obstruction is caused by _______. ANSWER:

loss of elastic recoil bronchiole smooth muscle spasms destruction of the walls of the alveoli a spasm of the diaphragm

Correct

Part D Which of the following would increase with exercise? ANSWER:

tidal volume, frequency of breathing and minute volume tidal volume minute volume frequency of breathing tidal volume and frequency of breathing

Correct

PhysioEx Exercise 7 > Activity 2: Activity and Post-lab Quiz for Comparative Spirometry Click on the link or the image below to launch Exercise 7 > Activity 2: Comparative Spirometry. Complete the Experiment and then answer the Post-lab Quiz questions to the right. Exercise 7 > Activity 2: Comparative Spirometry

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Respiratory System Mechanics Ex 7: Act. 1, 2 and 3

Part A Which of the following is(are) obstructive conditions? ANSWER: emphysema emphysema and an acute asthma attack an acute asthma attack emphysema, an acute asthma attack and exercise exercise

Correct

Part B Which of the following resulted in an increase in tidal volume above the normal value? ANSWER:

moderate exercise emphysema moderate exercise, acute asthma attack plus inhaler and emphysema acute asthma attack plus inhaler

Correct

Part C A normal FEV1% was seen with _______. https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=7835803

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Respiratory System Mechanics Ex 7: Act. 1, 2 and 3

ANSWER: emphysema emphysema, acute asthma attack and acute asthma attack plus inhaler acute asthma attack acute asthma attack plus inhaler

Correct

Part D With an acute asthma attack, ________________ increased when compared to normal values. ANSWER:

FVC RV TV ERV

Correct

PhysioEx Exercise 7 > Activity 3: Overview and Pre-lab Quiz for Effect of Surfactant and Intrapleural Pressure on Respiration Read the introduction and then answer the Pre-lab Quiz questions to the right. Exercise 7 > Activity 3: Effect of Surfactant and Intrapleural Pressure on Respiration

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Respiratory System Mechanics Ex 7: Act. 1, 2 and 3

Part A Without surfactant, _______. ANSWER:

the surface tension of the liquid in the alveoli would be greater the surface tension of the liquid in the alveoli would be less the alveoli would collapse the surface tension of the liquid in the alveoli would be greater and the alveoli would collapse the surface tension of the liquid in the alveoli would be less and the alveoli would collapse

Correct

Part B The pressure in the pleural cavity is called the _______. ANSWER:

intrapleural pressure interpleural pressure intrapulmonary pressure transpulmonary pressure

Correct

Part C The pressure in the pleural cavity is _______. ANSWER:

greater than the pressure in the alveoli less than the pressure in the alveoli less than the pressure in the alveoli and less than atmospheric pressure less than atmospheric pressure greater than the pressure in the alveoli and less than atmospheric pressure

Correct https://session.masteringaandp.com/myct/assignmentPrintView?assignmentID=7835803

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Part D In this activity, the pressure in the pleural cavity would be located _______. ANSWER:

in the valve in the simulated lungs between the bell jar and the outer wall of the lung below the diaphragm

Correct

PhysioEx Exercise 7 > Activity 3: Activity and Post-lab Quiz for Effect of Surfactant and Intrapleural Pressure on Respiration Click on the link or the image below to launch Exercise 7 > Activity 3: Effect of Surfactant and Intrapleural Pressure on Respiration. Complete the Experiment and then answer the Post-lab Quiz questions to the right. Exercise 7 > Activity 3: Effect of Surfactant and Intrapleural Pressure on Respiration

Part A Which amount of surfactant resulted in the greatest amount of airflow? ANSWER:

0 4 2 Amounts 2 and 4 gave the same airflow.

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Respiratory System Mechanics Ex 7: Act. 1, 2 and 3

Correct

Part B How did the pressure in the left intrapleural cavity change when the valve was opened? ANSWER:

The pressure in the intrapleural cavity equalized with the atmospheric pressure. It went from a positive number to a negative number and the pressure in the intrapleural cavity equalized with the atmospheric pressure. It went from a positive number to a negative number. It went from a negative number to zero. It went from a negative number to zero and the pressure in the intrapleural cavity equalized with the atmospheric pressure.

Correct

Part C How did the total air flow in this trial differ from that in the previous trial in which the pleural cavities were intact? ANSWER:

It did not change It went to zero. It was cut in half. It doubled in value.

Correct

Score Summary: Your score on this assignment is 98.6%. You received 2.96 out of a possible total of 3 points.

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