The alveolar epithelium in the lungs
- nonciliated columnar
- nonciliated squamous
- ciliated columnar
- ciliated squamous.
The Correct Option is B
Solution and Explanation
Top Questions on Mechanism Of Breathing
- Match List I with List II
List I List II A Expiratory capacity I Expiratory reserve volume + Tidal volume + Inspiratory reserve volume B Functional residual capacity II Tidal volume + Expiratory reserve volume C Vital capacity III Tidal volume + Inspiratory reserve volume D Inspiratory capacity IV Expiratory reserve volume + Residual volume
Choose the correct answer from the options given below:- NEET (UG) - 2024
- Biology
- Mechanism Of Breathing
- Vital capacity of lung is _________.
- NEET (UG) - 2023
- Biology
- Mechanism Of Breathing
- Select the correct events that occur during inspiration.
(a) Contraction of diaphragm
(b) Contraction of external inter - costal muscles
(c) Pulmonary volume decreases
(d) Intra pulmonary pressure increases- NEET (UG) - 2020
- Biology
- Mechanism Of Breathing
- Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?
- NEET (UG) - 2019
- Biology
- Mechanism Of Breathing
- The volume of ??natomical dead space??air is normally
- WBJEE - 2012
- Biology
- Mechanism Of Breathing
Questions Asked in NEET exam
- A wire of resistance \(R\) is cut into 8 equal pieces. From these pieces, two equivalent resistances are made by adding four of these together in parallel. Then these two are added in series. The net effective resistance of the combination is:
- NEET (UG) - 2025
- Resistance
Consider a water tank shown in the figure. It has one wall at \(x = L\) and can be taken to be very wide in the z direction. When filled with a liquid of surface tension \(S\) and density \( \rho \), the liquid surface makes angle \( \theta_0 \) (\( \theta_0 < < 1 \)) with the x-axis at \(x = L\). If \(y(x)\) is the height of the surface then the equation for \(y(x)\) is: (take \(g\) as the acceleration due to gravity)
- NEET (UG) - 2025
- Surface Tension
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell.
Reason (R): Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus.- NEET (UG) - 2025
- Cell Biology
AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is:
- NEET (UG) - 2025
- Electromagnetic Induction and Inductance
In an oscillating spring mass system, a spring is connected to a box filled with sand. As the box oscillates, sand leaks slowly out of the box vertically so that the average frequency ω(t) and average amplitude A(t) of the system change with time t. Which one of the following options schematically depicts these changes correctly?
- NEET (UG) - 2025
- Waves and Oscillations
Concepts Used:
Mechanism of Breathing
The air that we breathe in and breathe out of the lungs varies in its pressure. So basically when there is a fall down in air pressure the alveolar spaces drop down and the air enters the lungs (inspiration) as the pressure of the alveoli surpasses the atmospheric pressure, the air that is blown from the lungs (expiration). The rate of flow of air is in proportion to the magnitude of the pressure difference.
The breathing mechanism involves the following two processes:
- Inspiration - A contraction of muscles attached to the ribs on the outer side which pulls out the ribs and results in the expansion of the chest cavity is the process of inspiration.
- Expiration - The expiration process is considered once after the gaseous exchange takes place in the lungs and the air is expelled out. And the expulsion of air is called expiration.
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