a&p 2 lab exam 3 (2022/2023) rated A
The walls of the alveoli are composed of two types of cells, type I and type II. The function of
type II is: ✔✔to secrete surfactant.
After the tertiary bronchus, the next smaller branch of the respiratory passageway is the: ✔✔terminal bronchiole.
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.
The most powerful respiratory stimulus for breathing in a healthy person is ✔✔increase of carbon dioxide
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Which of the following does not influence the increase in ventilation that occurs as exercise is initiated? ✔✔fall in lactic acid levels
Tidal volume is air ✔✔exchanged during normal breathing
Since the lungs are filled with fluid during fetal life, which of the following statements is true regarding respiratory exchange? ✔✔Respiratory exchanges are made through the placenta.
The amount of air that can be inspired above the tidal volume is called: ✔✔inspiratory reserve
Which statement about CO2 is incorrect? ✔✔More CO2 dissolves in the blood plasma than is carried on the RBCs.
Oxygen and carbon dioxide are exchanged in the lungs and through all cell membranes by: ✔✔diffusion.
Select the correct statement about the pharynx. ✔✔The auditory tube drains into the nasopharynx
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