Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 39: Q.18 (page 1147)

What does FEV1/FVC measure? What factors may affect FEV1/FVC?

Short Answer

Expert verified
  • The FEV1 measures how much air you can exhale in one second.
  • The FVC measures the total amount of air you can exhale forcefully in one breath.

Step by step solution

01

Step 1. Introduction

  • The FEV1/FVC is a ratio that reflects the amount of air forcefully exhale from lungs. It's measured by spirometry, a test used to evaluate lung function.
  • The FEV1/FVC ratio is often used in diagnosing and monitoring the treatment of lung diseases such as chronic obstructive pulmonary disease (COPD).
02

Step 2. Explanation

  • The FEV1 measures how much air you can exhale in one second.
  • The FVC measures the total amount of air you can exhale forcefully in one breath.

The factors that affect FEV1/FVC are :

  • factors include respiratory muscle strength, body mass index (BMI), coexisting medical conditions, and previous chest injury or operations.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Which of the following statements about the mammalian respiratory system is false?

a. When we breathe in, air travels from the pharynx to the trachea.

b. The bronchioles branch into bronchi.

c. Alveolar ducts connect to alveolar sacs.

d. Gas exchange between the lung and blood takes place in the alveolus.

Which is the order of airflow during inhalation?

a. nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli

b. nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli

c. nasal cavity, larynx, trachea, bronchioles, bronchi, alveoli

d. nasal cavity, trachea, larynx, bronchioles, bronchi, alveoli

How does the administration of 100 percent oxygen save a patient from carbon monoxide poisoning? Why wouldn’t giving carbon dioxide work?

The kidneys are responsible for removing excess H+ ions from the blood. If the kidneys fail, what would happen to blood pH and to hemoglobin affinity for oxygen?

Describe the function of these terms and describe where they are located: main bronchus, trachea, alveoli, and acinus.
See all solutions

Recommended explanations on Biology Textbooks

Cell Communication

Read Explanation

Cell Cycle

Read Explanation

Reproduction

Read Explanation

Biological Molecules

Read Explanation

Ecology

Read Explanation

Genetic Information

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free