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Practice each question, then open the answer or worked solution.
Define the following terms?
a. Tidal volume
b. Residual volume
c. Asthma
a. Tidal Volume: Volume of air inhaled and exhaled during a normal breathing cycle without any forced breathing is tidal volume.
b. Residual Volume: Volume of air left in the lungs even after forced exhalation is called as residual volume.
c. Asthma: It is an inflammatory disease of the airways of the lungs
A fluid-filled double membranous layer surrounds the lungs. Name it and mention its important function.
A fluid-filled double membranous layer surrounds the lungs is called Pleura. A fluid-filled double membranous layer surrounds the lungs is called Pleura.
Name the primary site of exchange of gases in our body?
The primary site of exchange of gases in our body is Alveoli.
Cigarette smoking causes emphysema. Give reason.
Excessive cigarette smoking leads to Emphysema due to the presence of various harmful chemicals like nicotine, tar, sulphur etc. Alveoli walls get damaged due to this.
What is the amount of O2 supplied to tissues through every 100 ml. of oxygenated blood under normal physiological conditions?
The amount of O2 supplied to tissues through every 100 ml. of oxygenated blood under normal physiological conditions is around 5 ml.
A major percentage (97%) of O2 is transported by RBCs in the blood. How does the remaining percentage (3%) of O2 transport?
A major percentage (97%) of O2 is transported by RBCs in the blood, and the remaining percentage (3%) of O2 is transported through plasma.
Arrange the following terms based on their volumes in an ascending order
a. Tidal Volume (TV)
b. Residual Volume (RV)
c. Inspiratory Reserve Volume (IRV)
d. Expiratory Capacity (EC)
Tidal Volume (TV) < Residual Volume (RV) < Expiratory Capacity (EC) < Inspiratory Reserve Volume (IRV).
Complete the missing terms
a. Inspiratory Capacity (IC) = _____ +IRV
b. ___________________ = TV + ERV
c. Functional Residual Capacity (FRC) = ERV + ____
a. Inspiratory Capacity (IC) = TV + IRV
b. EC = TV + ERV
c. Functional Residual Capacity (FRC) = ERV + RV
Name the organs of respiration in the following organisms:
a. Flatworm – _________________________________________
b. Birds – _____________________________________________
c. Frog- ______________________________________________
d. Cockroach – ________________________________________
a. Surface of the body
b. Lungs
c. Lungs and moist skin
d. Tracheal tubes.
Name the important parts involved in creating a pressure gradient between lungs and the atmosphere during normal respiration.
1. Diaphragm
2. Internal Intercostal Muscles of the ribs
3. External Intercostal Muscles of the ribs