Multiple Choice
Which of the following is true about the muscles active during breathing?
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22. The Respiratory System
Introduction to Lung Physiology
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which system works with the respiratory system to contract the diaphragm for breathing?
A
Circulatory system
B
Nervous system
C
Endocrine system
D
Digestive system
Verified step by step guidance1
Understand the role of the diaphragm in breathing: The diaphragm is a dome-shaped muscle located at the base of the lungs. It plays a crucial role in respiration by contracting and relaxing to allow air to enter and exit the lungs.
Identify the system responsible for controlling muscle contractions: Muscle contractions, including those of the diaphragm, are controlled by the nervous system. The nervous system sends signals to muscles to initiate contraction.
Explore the interaction between the nervous system and the respiratory system: The nervous system regulates breathing by sending signals to the diaphragm to contract, which increases the volume of the thoracic cavity and draws air into the lungs.
Consider the role of the phrenic nerve: The phrenic nerve, originating from the cervical spinal cord, is responsible for transmitting signals from the nervous system to the diaphragm, facilitating its contraction during inhalation.
Conclude the relationship: The nervous system works closely with the respiratory system to ensure the diaphragm contracts effectively, enabling proper breathing. This interaction highlights the importance of neural control in respiratory function.
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