EasyZoologyBreathing and Exchange of Gases
+4 / -1
The normal tidal volume in a healthy adult is approximately:
A
150 mL
B
350 mL
C
500 mL
D
1200 mL
Explanation
Tidal volume (TV) is the volume of air inspired or expired in a single normal breath at rest, which is approximately 500 mL (0.5 L) in a healthy adult. Of this, about 350 mL reaches the alveoli for gas exchange, and 150 mL remains in the anatomical dead space (trachea, bronchi, bronchioles) where no exchange occurs.
Previous
What is the site of actual gas exchange in the lungs?
NextWhich gas is the primary driver for the urge to breathe in humans?
More from Breathing and Exchange of Gases
Medium
The figure given below shows a small part of human lung where exchange of gas takes place. In which
HardMatch the Following: (a) Asthma 1. Inflammation of nasal tract(b) Bronchitis 2. Spasm of tracheal mu
HardThe rate of breathing is primarily controlled by the concentration of:
MediumThe respiratory rhythm centre is located in the:
MediumThe enzyme required for the transport of CO2 as bicarbonate is:
MediumEvery 100 mL of deoxygenated blood delivers approximately ______ of CO2 to the alveoli.
Practice Zoology Exams
Full-length mock tests with detailed analytics, rank, and percentile.
Browse Exams