Question

question 34
1 pts
a cluster of alveoli is known as an alveolar sac.
true
false
question 35
1 pts
red blood cells contain an oxygen - binding substance called

question 36
1 pts
total blood volume has been shown to increase with training.
true
false

Explanation:

• Question 34: A cluster of alveoli is indeed known as an alveolar sac, which is a basic anatomical - physiological fact in the respiratory system.
• Question 35: Red blood cells contain hemoglobin, which is the oxygen - binding substance that enables the transport of oxygen in the blood.
• Question 36: Regular training can lead to an increase in total blood volume as the body adapts to the increased demand for oxygen and nutrients, a well - known concept in exercise physiology.

Answer:

• Question 34: True
• Question 35: Hemoglobin
• Question 36: True