Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
The physiological term for breathing.
|
Pulmonary Ventilation
|
|
How much volume of air is moved in and out of the lungs during normal, quiet breathing?
|
500 ml
|
|
The amount of air that can be forcefully inhaled after a normal tidal volume inhalation (2800 ml).
|
Inspiratory Reserve Volume
|
|
The process by which air is taken into the lungs.
|
Inspiration
|
|
TV + IRV + ERV = (4800) ml.
|
Vital Capacity (VC)
|
|
An inspiratory muscle.
|
Diaphragm
|
|
The apparatus used to measure respiratory volume.
|
Spirometer
|
|
Sounds produced by air rushing through the trachea and bronchi.
|
Bronchial sounds
|
|
What is the normal pH of arterial blood (+/- 0.02)?
|
7.4
|
|
When carbon dioxide enters red blood cells and combines with water, what is formed?
|
Carbonic Acid
|
|
Air and food are routed in to the proper channels by the
|
Larynx
|
|
The loudness of a person's voice depends on
|
The force with which air rushes across the vocal folds
|
|
The smallest macroscopic subdivision of the lung is the
|
Lobule
|
|
The pleurae are vital to the integrity of the lungs because
|
They produce a lubricating serous secretion, allowing the lungs to glide over the thorax wall during breathing
|
|
Surfactant helps to prevent the alveoli from collapsing by
|
Interfering with the cohesiveness of water molecules, thereby reducing the surface tension of alveolar fluid
|
|
For gas exchange to be efficient, the respiratory membrane must be
|
0.5 to 1 micrometer thick
|
|
The most powerful respiratory stimulus for breathing in a healthy person is:
|
Increase of carbon dioxide
|
|
In the plasma, the quantity of oxygen in solution is:
|
Only about 1.5% of the oxygen carried in dissolved form
|
|
Which of the following changes occurs as the conducting tubes of the lungs become smaller?
|
Smooth muscle amount increases
|
|
The ideal vital capacity of an individual is around:
|
4800
|
|
Which of the following provide the greatest surface area for gas exchange?
|
Alveoli
|
|
The respiratory membrane is a combination of:
|
Alveolar and capillary walls and their fused basal lamina
|
|
A gas emboli may occur because:
|
A diver holds his breath upon ascent
|
|
Inspiratory capacity is:
|
The total amount of air that can be inspired after a tidal expiration
|
|
Which of the following statements is true regarding the respiratory rate of a newborn?
|
The respiratory rate of a newborn is, at its highest rate, approximately 40-80 respirations per minute
|
|
The factors responsible for holding the lungs to the thorax wall are:
|
Surface tension from pleural fluid, positive pressure, and atmospheric pressure on the thorax
|
|
Which of the following is not possible?
|
Pressure gradient equals gas flow over resistance
|
|
Select the correct statement about the physical factors influencing pulmonary ventilation
|
As alveolar surface tension increases, additional muscle action will be required
|
|
The erythrocyte count increases after a while when an individual goes form a low to a high altitude because:
|
The concentration of oxygen and/or total atmospheric pressure is lower at high altitudes
|
|
Select the correct statement about oxygen transport in blood:
|
A 50% oxygen saturation level of blood returning to the lungs might indicate an activity level higher than normal
|