The partial pressure of oxygen in the alveoli of the lungs is:

Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs. Choose the correct answer from the following :

Match List-I with List-II. $\begin{array}{|l|l|l|l|}\hline & \text{List - I} & & \text{List - II} \\\hline \text{A}. & \text{Emphysema} & \text{(i)} & \text{Rapid spasms in muscle due to low } \mathrm{Ca}^{++} \text{ in body fluid} \\\hline \text{B.} & \text{Angina pectoris} & \text{(ii)} & \text{Damaged alveolar walls and decreased respiratory surface} \\\hline \text{C.} & \text{Glomerulonephritis} & \text{(iii)} & \text{Acute chest pain when not enough oxygen is reaching to heart muscle} \\\hline \text{D.} & \text{Tetany} & \text{(iv)} & \text{Inflammation of glomeruli of kidney} \\\hline\end{array}$ Choose the correct answer from the options given below :

Match List-I with List-II: $\begin{array}{|l|l|r|l|}\hline & \text{List-I} & & \text{List-II} \\ \hline A. & \text{Residual Volume} & I. & \begin{array}{l} \text{Maximum volume of air that can be breathed in after forced} \\ \text{expiration} \end{array} \\ \hline B. & \text{Vital Capacity} & II. & \text{Volume of air inspired or expired during normal respiration} \\ \hline C. & \text{Expiratory Capacity} & III. & \text{Volume of air remaining in lungs after forcible expiration} \\ \hline D. & \text{Tidal Volume} & IV. & \text{Total volume of air expired after normal inspiration} \\ \hline \end{array}$ Choose the correct answer from the options given below:

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: During the transportation of gases, about $20-25$ percent of $\mathrm{CO}_2$ is carried by Haemoglobin as carbamino-haemoglobin. Reason R: This binding is related to high $\mathrm{pCO}_2$ and low $\mathrm{pO}_2$ in tissues. In the light of the above statements, choose the correct answer from the options given below.

Match List I with List II :  Choose the correct answer from the options given below :