Introduction:
Respiration is a process, in which food is broken down into simpler components by releasing energy. The respiratory system consists of organs that participate in the exchange of gases. Respiration includes two processes; breathing (external respiration) and

Answer to Problem 1DYKB
Correct answer:
Respiration normally requires nervous system, muscular system, and respiratory system. Therefore, option d. is correct.
Explanation of Solution
Reason for the correct statement:
Option d. is given as “All of these are correct”. Respiration involves inhalation and exhalation. Lungs, nostrils, nasal cavity, and windpipe are parts of the respiratory system that are involved in respiration. Respiration also involves muscular system. Muscle cells function in the contraction and relaxation of the diaphragm and thoracic cavity. Muscle contraction is promoted by stimuli. These stimuli are transmitted through neurons. Hence, respiration normally requires nervous system, muscular system, and respiratory system.
Hence, option d. is correct.
Reasons for the incorrect statements:
Option a. is given as “respiratory system”. Apart from the respiratory system, respiration also requires muscular and nervous system. Hence, option a. is incorrect.
Option b. is given as “muscular system”. Apart from muscular system, respiration also requires nervous system and respiratory system. Hence, option b. is incorrect.
Option c. is given as “nervous system”. Apart from the nervous system, respiration also requires muscular system and respiratory system. Hence, option c. is incorrect.
Hence, options a., b., and c. are incorrect.
Respiration involves the functioning of the respiratory system, nervous system, and muscular system. All these systems function simultaneously to perform respiration.
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Chapter 23 Solutions
ANAT & PHYS (CONNECT ACCESS)(CUSTOM)
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