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During the process of exhalation, the ri...

During the process of exhalation, the ribs move

A

down and inwards

B

up and inwards

C

down and outwards

D

up and outward

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understand the Process of Breathing:** - Breathing consists of two main processes: inhalation (breathing in) and exhalation (breathing out). 2. **Identify the Movement of Ribs During Exhalation:** - During exhalation, the diaphragm relaxes and the volume of the thoracic cavity decreases. This causes the ribs to move. 3. **Determine the Direction of Rib Movement:** - The ribs move downward and inward during exhalation. This action helps to push air out of the lungs. 4. **Evaluate the Options Provided:** - Option A: Downward and inward (correct) - Option B: Upward and inward (incorrect) - Option C: Down and outward (incorrect) - Option D: Up and outward (incorrect) 5. **Conclude the Correct Answer:** - The correct answer is option A: Downward and inward.
**Step-by-Step Solution:** 1. **Understand the Process of Breathing:** - Breathing consists of two main processes: inhalation (breathing in) and exhalation (breathing out). 2. **Identify the Movement of Ribs During Exhalation:** - During exhalation, the diaphragm relaxes and the volume of the thoracic cavity decreases. This causes the ribs to move. ...
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Knowledge Check

  • Breathing, an important step of the respiratory system, is a two-part process involving-inhalation and exhalation. During the process of breathing, the thorax region shows some changes. Identify the statement/s from below that is/are related to the exhalation process. I. External intercostal muscles contract II. Pressure in the lungs increases III. Diaphragm contracts IV. The volume of thorax decreases

    A
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    D
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