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Nervous System Control of Breathing Quiz

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Nervous System Control of Breathing Quiz

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Questions and Answers

What part of the brain is responsible for sending nerve impulses to contract muscles for inspiration?

Pons

Hypothalamus

Cerebellum

Medulla oblongata (correct)

Which feedback mechanism inhibits the breathing center when the lungs fill up?

Chemical receptors in the heart

Stretch receptors in the lungs (correct)

Thermoreceptors in the diaphragm

Pressure receptors in the aorta

What happens when CO2 levels increase in the body?

Breathing rate and depth increase (correct)

Breathing remains unaffected

Breathing rate decreases

Breathing depth decreases

During external respiration, where does carbon dioxide diffuse to?

Out of plasma into the lungs Signup and view all the answers

In which process do oxygen leave the blood and carbon dioxide enter the blood in the tissues?

Internal Respiration Signup and view all the answers

What is responsible for protecting us from infectious agents in the respiratory tract?

Mucus covering Signup and view all the answers

What is the main factor that regulates the activity of inspiration?

Carbon dioxide levels in the blood Signup and view all the answers

Which muscles are involved in the process of inspiration?

Intercostal muscles Signup and view all the answers

What is the function of the external intercostal muscles during expiration?

Help in air expulsion by pushing air out Signup and view all the answers

Which volume of air represents the small amount of air moving in and out with each breath?

Tidal volume Signup and view all the answers

What is the function of residual volume in the lungs?

Remains in the lungs after exhalation Signup and view all the answers

How is vital capacity visualized?

$4800$ mL equals tidal volume plus inspiratory reserve volume plus expiratory reserve volume Signup and view all the answers

What is the function of the initial air passages in the respiratory system?

To warm, filter, and moisten incoming air Signup and view all the answers

Which structure covers the opening to the trachea during swallowing?

Epiglottis Signup and view all the answers

How does the volume of sound produced by the vocal cords vary?

By varying the thickness of the vocal cords Signup and view all the answers

Where does tear drainage lead to in the respiratory system?

Nasal cavities Signup and view all the answers

What determines the pitch of an individual's voice in the respiratory system?

The length and elasticity of the vocal cords Signup and view all the answers

Which part of the respiratory system is responsible for producing sound?

Larynx Signup and view all the answers