Upgrade to remove ads
Only $35.99/year

HAP chap 15 quiz 4

Terms in this set (27)

The exchange of gases between the air in the alveoli and the blood is called external respiration.
TRUE
A lung problem would most directly affect external respiration. A heart attack that drastically reduced stroke volume would most directly affect internal respiration.
TRUE??
Cellular respiration refers to the exchange of gases between the cells and the blood.
TRUE
The respiratory system needs to exist because most of our body cells are not in contact with the air.
TRUE
Pulmonary ventilation and external respiration are different terms for the same thing.
FALSE
External respiration and breathing refer to the same process.
FALSE
Breathing and pulmonary ventilation refer to the same process.
TRUE
In order for external respiration to take place, the alveoli must have a higher oxygen concentration and a lower carbon dioxide concentration than the blood in the lung capillaries.
TRUE
During inspiration, the diaphragm contracts and moves up into the thoracic cavity.
FALSE, (expiration)
During inspiration, the size of the chest cavity enlarges.
TRUE
The main function of the diaphragm is to increase the air pressure in the chest cavity.
FALSE, (increase volume of thorax)
Inspiration occurs when the vagus nerve stimulates the diaphragm to contract.
FALSE, (phrenic nerve)
The smooth muscle contraction that occurs in an asthma attack most seriously affects the secondary bronchi.
FALSE
If atmospheric pressure is 760 mm Hg, the pressure inside the chest cavity must be below 760 mm Hg for inspiration to occur.
TRUE
In some lung diseases, the lungs lose their elasticity and their ability to recoil. This would have the greatest impact on expiration.
TRUE
In expiration, the size of the chest cavity is reduced.
TRUE
Tidal volume is part of vital capacity.
TRUE
Vital capacity is the amount of air that is inhaled and exhaled during normal, quiet breathing.
FALSE, (tidal volume)
Tidal volume plus residual volume is equal to vital capacity.
FALSE
Quiet expiration requires much less energy than quiet inspiration.
TRUE
Tidal volume plus inspiratory reserve volume plus expiratory reserve volume equals vital capacity.
TRUE
Residual volume is part of vital capacity.
FALSE
The exchange of gases occurs by way of the active transport of oxygen.
FALSE, (diffusion - passive)
In the lung, hemoglobin becomes oxyhemoglobin.
TRUE
Most of the carbon dioxide in the blood is carried as carbaminohemoglobin.
FALSE, (bicarbonate ions)
Hemoglobin can carry both oxygen and carbon dioxide.
TRUE
There is more carbaminohemoglobin in the pulmonary vein than in the pulmonary artery.
FALSE
Students also viewed