alleryStart learning →What haemoglobin saturation range is normal in a healthy person?
AAbout 67 to 75 percent
BAbout 75 to 85 percent
CAbout 85 to 92 percent
DAbout 95 to 99 percent
Answer & Solution
Correct answer: D. About 95 to 99 percent
1. Haemoglobin saturation is the percentage of available heme units bound to oxygen.
2. In a healthy person with normal haemoglobin levels it runs from 95 to 99 percent.
3. A saturation of 100 percent would mean every heme unit in every erythrocyte is bound.
4. The 67 percent figure belongs to high altitude rather than to a healthy person at sea level.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.5 Transport of Gases_
Keep practising The Respiratory System
Browse all The Respiratory System questions for NEET PG, or explore more Physiology topics.
Related questions
Why is survival low for a baby born before 26 weeks?By how much has surfactant therapy reduced death from respiratory distress syndrome?What proportions of preterm infants are quoted as developing respiratory distress syndromeWhat happens to the fluid left in the lungs after delivery?How soon after birth does the first inhalation occur?What does the fetus move in and out during fetal breathing movements?Around which week do fetal breathing movements begin?When does a full complement of functional alveoli appear?