WorksheetsIB SEHS 2.1 Ventilatory Review
Total questions: 22
Worksheet time: 19mins
Which of the following is not part of the ventilatory system?
bronchioles
trachea
oesophagus
bronchus
pharynx
Which of the following is the main organ of gas exchange?
lungs
diaphragm
bronchi
larynx
What is the name of the small sacs specially adapted for gas exchange?
bronchioles
alveoli
trachea
villi
By which process does O2 enter and CO2 leave the blood?
active transport
dispersion
diffusion
osmosis
Which of the following structures is lined with C-shaped cartilage to prevent collapse?
bronchioles
alveoli
lungs
trachea
During inhalation...
the diaphragm contracts and flattens
the diaphragm relaxes and becomes dome-shaped
the external intercostal muscles contract
the external intercostal muscles relax
During inhalation...
Volume of the thorax decreases
Pressure in the thorax decreases
Volume of the thorax increases
Pressure in the thorax increases
Vital capacity:
total volume of air that can be voluntarily moved in one breath
volume of air inhaled or exhaled in a single breath at rest
volume of air in the lungs following a maximal expiration
volume of gas that can be expired at the end of a tidal expiration
Tidal volume:
total volume of air that can be voluntarily moved in one breath
volume of air inhaled or exhaled in a single breath at rest
volume of air in the lungs following a maximal expiration
volume of gas that can be expired at the end of a tidal expiration
Residual volume:
total volume of air that can be voluntarily moved in one breath
volume of air inhaled or exhaled in a single breath at rest
volume of air in the lungs following a maximal expiration
volume of gas that can be expired at the end of a tidal expiration
Which of the following is not a function of the conducting pathways of the ventilatory system?
low resistance path for airflow
defense against harmful substances
warming and moistening of air
cooling and drying of air
Vital capacity plus residual volume equals __________________.
tidal volume
tidal capacity
total lung capacity
total tidal volume
Total lung capacity is equal to
vital capacity + residual volume
vital capacity + expiratory reserve
vital capacity + expiratory reserve + inspiratory reserve
tidal volume + residual volume
Gas exchange is needed to supply _____________ to cells and remove __________________
carbon dioxide; oxygen
oxygen; food
oxygen; carbon dioxide
carbon dioxide; water
If an individual with respiratory difficulty were retaining too much carbon dioxide, which of the following compensatory responses would the nurse expect to be initiated?
Decrease in ventilation rate
Increase in respiratory rate
Increase in tidal volume
Vasodilation of the pulmonary arterioles
Which of the following is/are correct adaptations of alveoli for fast gas exchange?
thin cell wall gives a short diffusion distance
moist inner surface to dissolve O2 and CO2
gas exchange maintains concentration gradients between alveoli and blood
close to blood capillaries gives a short diffusion distance
What is the main reason for placing an oxygen mask on a patient, who has a severe lung disease?
It makes them feel less tired
It increases the concentration gradient for oxygen between the alveoli and blood capillaries
It allows aerobic respiration to occur
It allows oxygen to diffuse faster into the alveoli from blood capillaries
When chemoreceptors detect a slight decrease in pH, this means that _______________ concentrations have increased, and the breathing rate must ________________ .
Carbon dioxide; increase.
Carbon dioxide; decrease.
Oxygen; increase.
Oxygen; decrease.
Which of the following are the chemoreceptors that responsible in control breathing?
Aortic bodies
Aorta bodies
Carotid bodies
Carotic bodies
Which of the following statements is true?
The breathing rate is completely under voluntary control
The chemoreceptors are located on the diaphragm and intercostal muscle
During expiration, the external intercostal muscles and diaphragm contract
CO2 released from respiration is detected by chemoreceptors in the carotid and aortic bodies of the blood system
How does exercise impact gas exchange in the alveoli?
The rate of gas exchange stays the same.
The rate increases because there is a greater concentration of CO2 in the blood, increasing the concentration gradient
The rate decreases because the blood is moving too quickly through the alveoli.
