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Questions and Answers
What is the broader term that includes intake of air/ oxygen, and its utilization in the body cells to produce energy?
What is the broader term that includes intake of air/ oxygen, and its utilization in the body cells to produce energy?
Respiration
What is the simpler, mechanical process of inhaling and exhaling air called?
What is the simpler, mechanical process of inhaling and exhaling air called?
Breathing
Breathing includes respiration.
Breathing includes respiration.
False
What are the two main parts of the respiratory cycle?
What are the two main parts of the respiratory cycle?
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How many breaths per minute do normal adults take?
How many breaths per minute do normal adults take?
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Newborn babies breathe 60 times per minute.
Newborn babies breathe 60 times per minute.
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An increase in CO2 content of the blood decreases the breathing rate.
An increase in CO2 content of the blood decreases the breathing rate.
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What is the name of the process of taking in air?
What is the name of the process of taking in air?
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What is another name for inhalation?
What is another name for inhalation?
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What are the two main factors contributing to the increase in size during inspiration?
What are the two main factors contributing to the increase in size during inspiration?
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What moves upwards and outwards due to the contraction of the external intercostal muscles?
What moves upwards and outwards due to the contraction of the external intercostal muscles?
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Which muscles are relaxed during inspiration?
Which muscles are relaxed during inspiration?
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The diaphragm expands downwards during inspiration.
The diaphragm expands downwards during inspiration.
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What is the dome-shaped sheet of muscular tissue situated towards the base of the lungs called?
What is the dome-shaped sheet of muscular tissue situated towards the base of the lungs called?
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The diaphragm normally remains arched upward.
The diaphragm normally remains arched upward.
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Study Notes
Respiration vs. Breathing
- Respiration is a broader term encompassing air intake, oxygen utilization, and energy production in body cells.
- Breathing is a mechanical process of inhaling and exhaling air, involving muscles but not necessarily energy production.
Respiratory Cycle
- The respiratory cycle includes inspiration (breathing in), expiration (breathing out), and a short pause.
- Normal adults typically breathe 12-18 times per minute.
- Newborns breathe 60 times per minute.
- An increased CO₂ level in the blood triggers a faster breathing rate.
Inspiration (Inhalation)
- Inspiration results from an increase in the thoracic cavity size.
- This is due to the combined action of the ribs and diaphragm.
- Ribs move upwards and outwards, and the external intercostal muscles contract. This expands the chest cavity.
- The diaphragm, a sheet of muscle below the lungs, contracts and flattens, further expanding the chest cavity.
- Internal intercostal muscles are relaxed during this process.
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Description
Test your understanding of respiration and breathing with this quiz. Explore concepts such as the respiratory cycle, inspiration, and the differences between respiration and the mechanical process of breathing. Perfect for biology students looking to deepen their knowledge of human physiology.
