3. You tell the patient to breathe normally when they have exhaled normally you

Question

3. You tell the patient to breathe normally when they have exhaled normally you instruct them to Exhale as much air as possible you measured this volume. This volume is known as the select any appropriate answers
inspiratory capacity
residual volume
expiratory Reserve volume
vital capacity
tidal volume
4. which of the following statements are accurate select any appropriate answers
during inspiration to diagram will contract to move in inferiorly this will decrease the thoracic volume and allow gas to enter the lungs
during inspiration ribs and sternum will elevate this causes the volume to increase and allows air to be pulled into the lungs.
During inspiration to diagram with contract to move Superiorly. this will decrease the thoracic volume and allow gas to enter the lungs
during inspiration muscles contract to decrease intrapulmonary pressure
during inspiration and ribs and sternum will depress this causes the thoracic volume to decrease and allows air to be pulled into lungs
5.Boyles law can be written as P1V1 equals p2v2 what must happen for air to enter the lungs select any appropriate answers
the pressure of gas in the lungs must be higher than atmospheric pressure
the pressure of gas in the lungs must be lower than the atmospheric pressure
the volume of gas in the lungs must be higher than ever the atmospheric volume
answer not listed
the volume of gas in the lungs must be equal to atmospheric volume

Explanation / Answer

Ans. 3) The correct option is- Expiratory reserve volume.

Expiratory reserve volume- The maximal volume of air that can be exhaled from the end expiratory position.

Tidal volume- the volume of air moved into or out of the lungs during normal breathing.

Residual volume- the volume of air remaining in lungs after maximum exhalation.

Vital capacity- the volume of air breathed out after the deepest inhalation.

Inspiratory capacity- this is sum of Inspiratory reserve volume and tidal volume. IRV is maximal volume that can be inhaled from the end inspiratory level.

4) The accurate option is-

During inspiration ribs and sternum will elevate this causes the volume to increase and allows air to be pulled into the lungs.

During inspiration diaphragm contracts and moves downwards, this increases the space in the chest cavity thus lung volume expands. The intercostal muscles between ribs also help enlarge the chest cavity they contract to pull your Rib cage both upward and outward when you inhale. Pressure in lungs decreases and air comes rushing in. During exhalation diaphragm relaxes and moves upward into the chest cavity. the intercostal muscles between ribs also relax to reduce the space in chest cavity. pressure in lungs increases air is pushed out.

5) answer is-

The pressure of gas in the lungs must be lower than the atmospheric pressure.

During the process of inhalation, the lung volume expands as a result of contraction of the diaphragm and intercostal muscles, Thus expanding the thoracic cavity. Due to this increase in volume the pressure is decrease based on the principles of Boyle's law.

Boyle's law describes the relationship between the pressure and the volume of a gas. The law states that if volume increases then the pressure must decrease (vice versa). Thus if the pressure is lower in the lungs then outside the lungs then air rushes in. If opposite occurs, then air rushes out of the lungs.

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