During which phase of respiration does oxygen enter the bloodstream? (2019)

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Question: During which phase of respiration does oxygen enter the bloodstream? (2019)

Options:

Correct Answer: Inhalation

Exam Year: 2019

Solution:

Oxygen enters the bloodstream during inhalation when air is drawn into the lungs and diffuses across the alveolar membrane.

During which phase of respiration does oxygen enter the bloodstream? (2019)

During which phase of respiration does oxygen enter the bloodstream? (2019)

Step 1: Understand that respiration is the process of taking in oxygen and releasing carbon dioxide.
Step 2: Know that inhalation is the act of breathing in air.
Step 3: Realize that when you inhale, air travels into your lungs.
Step 4: Learn that inside the lungs, there are tiny air sacs called alveoli.
Step 5: Understand that oxygen from the air in the alveoli moves into the bloodstream.
Step 6: Remember that this movement of oxygen into the blood happens through a process called diffusion.

Respiration Phases – Understanding the different phases of respiration, particularly inhalation and gas exchange.
Gas Exchange – The process of oxygen diffusing from the alveoli into the bloodstream.