Chapter 34, Problem 19A

Summary Introduction

Introduction:

The respiratory system is the connection between organs and tissues that control our breathing. It consists of our airways, lungs, and blood vessels. The muscles that strengthen our lungs are additional components of the respiratory system. These parts function together to support our body to absorb oxygen from the air so our organs can function. It additionally cleans waste gases, such as carbon dioxide, from our blood. Common troubles consist of allergies, diseases, or infections. Internal respiration is the method of circulating oxygen from the blood, into the interstitial fluid, and into the cells. Waste and carbon dioxide are also diffused in the other direction, from the cells to the blood.

Answer to Problem 19A

Correct answer:

The correct answer is option (D) internal respiration.

Explanation of Solution

Explanation/justification for the correct answer:

Option (D) internal respiration.Inner respiration occursin the metabolizing tissue cells, in which oxygen diffuses out of the blood and carbon dioxide diffuses out of the cells. These tissues are present all over the body. So, this is the correct option.

Explanation for incorrect answer:

Option (A) filtration. Filtration occurs in the glomerulus that is the vascular initiation of the nephron. So, this is an incorrect answer.

Option (B) breathing. The process of breathing (respiration) is categorized into two distinct phases, inspiration (inhalation) and expiration (exhalation) which take place in the lungs. So, this is an incorrect answer.

Option (C) external respiration. External respiration happens in the lungs wherein oxygen diffuses into the blood and carbon dioxide diffuses into the alveolar air. So, this is an incorrect answer.