alleryStart learning →Total dead space is made up of what?
AAnatomical dead space and residual volume
BAlveolar dead space and residual volume
CAnatomical dead space and tidal volume
DAnatomical and alveolar dead space together
Answer & Solution
Correct answer: D. Anatomical and alveolar dead space together
1. There are two kinds of dead space: anatomical, in the conducting airway, and alveolar, in non-functional alveoli.
2. Total dead space is the two of them added together.
3. It represents all the air in the respiratory system not used in gas exchange.
4. Residual volume does take part in gas exchange while it sits in functional alveoli, so it is not dead space.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.3 The Process of Breathing_
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?