Which process occurs when blood passes through the lungs during circulation?
Oxygen is absorbed and carbon dioxide is released
The right side of the heart sends deoxygenated blood to the lungs through the pulmonary arteries (pulmonary circulation).
In the lungs, the blood flows through capillaries surrounding the alveoli. Oxygen in the alveolar air is at higher concentration, so it diffuses into the blood and binds to haemoglobin.
Carbon dioxide is at higher concentration in the blood, so it diffuses out into the alveoli and is breathed out.
Nutrients are absorbed into blood in the small intestine (villi), not the lungs. Taking in CO₂ and releasing O₂ is the reverse of gas exchange in the lungs. Filtering blood to remove wastes is done by the kidneys.
Hence, the answer is Oxygen is absorbed and carbon dioxide is released.
Similar Questions
How do the respiratory and circulatory systems work together during exercise?
What is a key difference between aerobic and anaerobic respiration in animals?
A patient has a lung disorder that reduces oxygen uptake in the alveoli. What is the most likely effect on blood transport in the lungs?
How does nutrition occur in Amoeba?
Why is it essential for an organism’s body to carry out life processes during periods of rest?
A plant is kept in a sealed glass container for several days. Which life process is most likely to be affected?
A doctor is assessing two patients: one with high systolic blood pressure and another with high diastolic blood pressure. If these conditions remain untreated, what is the most likely outcome?
Which process directly contributes to the release of oxygen into the atmosphere?
Which type of blood vessel is primarily responsible for exchanging nutrients and waste between blood and tissues?
The process of movement of food through phloem is called ________.
Important Questions from Life Processes
Which one of the following is the process involved in photosynthesis?
Which element is needed by the thyroid gland to produce thyroxine hormone?
Identify the correct match of plant hormones with their functions.
What is required for the synthesis of thyroxin hormones?
Which of the following receptors help in the detection of taste?
