객관식
Which of the following are the thinnest blood vessels in the human body?
522
views
19. The Blood Vessels
Capillaries
객관식
In the lungs, what type of blood vessels surround the alveoli to allow rapid gas exchange?
A
Venules
B
Elastic arteries
C
Capillaries
D
Arterioles
검증된 단계별 안내1
Step 1: Understand the function of alveoli in the lungs. Alveoli are tiny air sacs where gas exchange occurs between the air and the blood.
Step 2: Recall that for efficient gas exchange, blood vessels must be very thin-walled and closely associated with alveoli to allow oxygen and carbon dioxide to diffuse easily.
Step 3: Identify the types of blood vessels listed: venules, elastic arteries, capillaries, and arterioles, and consider their structure and function.
Step 4: Recognize that capillaries are the smallest blood vessels with thin walls, making them ideal for gas exchange as they form a dense network around alveoli.
Step 5: Conclude that capillaries surround the alveoli to facilitate rapid diffusion of gases between the air in the alveoli and the blood.
관련 영상
관련 실천
