The Mechanics Of Breathing
The purpose of this ection is to gain knowledge of the way we breath and hoe gases are processed in the human body
- 1.As the diaphragm relaxes, inhalation occurs.
- A.
True
- B.
False
- 2.One of the main functions of breathing is to allow oxygen to pass from the alveoli of the lungs into the blood.
- A.
True
- B.
False
- 3.One of the main functions of breathing is to allow carbon dioxide to pass from the blood into the alveoli of the lungs.
- A.
True
- B.
False
- 4.The upper airway includes the main bronchi, trachea, nose, month, and throat.
- A.
True
- B.
False
- 5.The diaphragm is considered a voluntary muscle.
- A.
True
- B.
False
- 6.The diaphragm is considered an involuntary muscle
- A.
True
- B.
False
- 7.A normal respiratory rate should be:
- A.
5 to 8 per minute in runners.
- B.
12 to 20 per minute in adults.
- C.
About equal to the person's heart rate.
- D.
More than 24 per minute in the elderly.
- 8.Which of the following is NOT a sign cf abnormal breathing?
- A.
Cyanotic skin
- B.
Warm, dry skin
- C.
Unequal breath sounds
- D.
Muscle retractions between the ribs
- 9.If breathing stops, the lack of oxygen can cause:
- A.
Fainting due to brain damage.
- B.
Brain damage after 4 to 6 minutes.
- C.
Brain damage after 12 to 15 minutes.
- D.
Kidney damage before brain damage.
- 10.The brain stem normally controls breathing by increasing the respiration rate when the:
- A.
Nitrogen-oxygen levels fall.
- B.
Nitrogen level in the blood goes down.
- C.
Oxygen level in the blood goes up.
- D.
Carbon dioxide level in the blood goes up.
- 11.What percent oxygen is contained in the air we breath?
- A.
11%
- B.
16%
- C.
21%
- D.
78%
- 12.During normal breathing, the accessory muscles of respiration contract to help squeeze air out of the chest cavity.
- A.
True
- B.
False
- 13.During inhalation, the muscles in the chest wall and the diaphragm are active, causing the pressure to rise inside the chest cavity.
- A.
True
- B.
False
- 14.See-saw respirations in infants is the normal resting pattern.
- A.
True
- B.
False
- 15.Which of the follwing statements regarding problems maintaining an open air-way in a child versus an adult is False?
- A.
The trachea and larynx are softer.
- B.
The trachea and larynx are more easily compressed by external pressure
- C.
. Swelling of the epiglottis is more common.
- D.
The tongue is relatively smaller in children than in adults when compared to other structures
- 16.In the field, respiratory arrest may appear the same as cardiic arrest.
- A.
True
- B.
False
- 17.Wheezing can only be heard with a stethoscope applied to the back of thepatient.
- A.
True
- B.
False
- 18.BLS is started only for cardiac arrest, not if there is a possible respiratoryobstruction.
- A.
True
- B.
False
- 19.If a person is not breathing, your first step should be to:
- A.
Begin CPR.
- B.
Perform a chest thump.
- C.
Clear and open the airway.
- D.
give three quick breaths mouth-to mouth.
- 20."The control of respiration is normally determined by the:
- A.
Size of the lungs.
- B.
Person's physical condition.
- C.
Oxygen level in the blood.
- D.
Carbon dioxide level in the blood.
- 21.In children, nasal flaring is a sign of:
- A.
Normal breathing.
- B.
Labored breathing.
- C.
Emotional distress.
- D.
An intact sense of smelL
- 22.Which of the following defines alveoli?
- A.
Part of the vocal cords
- B.
Small air sacs in the lungs
- C.
A layer around the chest cavity
- D.
The most common form of pasta seen in cases of choking