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851.

Tick mark of incorrect statement .A. Every 100 mL of deoxygentated blood delivers approximately 4 mL of `CO_(2)` to the alveoli.B. Carbonic anhydrase is present in very high concentration in RBC.C. High `p_(CO_(2)) and ` low `p_(O_(2))` in tissue help in the binding of carbon dioxide.D. `CO_(2)` is carried in hemoglobin as carboxyhemoglobin.

Answer» Correct Answer - D
Discussion
852.

Tick mark of incorrect statement .A. Every 100 ml of deoxygenated blood delivers approximately 4 ml of `CO_(2)` to the alveoliB. Carbonic anhydrase is present in very high concentration in RBCC. High `pCO_(2)` and low `pO_(2)` in tissues help in binding of carbon dioxideD. `CO_(2)` is carried in haemoglobin as carboxyhaemoglobin

Answer» Correct Answer - D
Discussion
853.

A fluid filled double membranous layer surrounds the lungs. Name it and mention its important function.

Answer» Fluid filled pleuron . Pleural fluid reduces the friction and keeps the two pleura together and the lungs inflated.
Discussion
854.

Asbestosis or silicosis is characterized by the proliferation of fibrous tissue inA. Respiration tractB. Upper part of lungC. Lower part of lungD. Pulmonary cappilary

Answer» Correct Answer - B
Discussion
855.

Vital capacity of lungs isA. `IRV + ERV`B. `IRV + ERV + TV - RV`C. `IRV + ERV + Tv + RV`D. `IRV + ERV + TV`.

Answer» Correct Answer - D
Vital capacity is the maximum volume of air a person can breathe in after a forced expiration or the maximum volume of air a person can breathe out after a forced inspiration. This equals the inspiratory reserve volume (IRV) + expiratory reserve volume (ERV) + tidal volume (TV). Its value is `3400` mL - `4800` mL.
Discussion
856.

When fats are respiratory substrate the value of R.Q would beA. approx . 0.7B. approx . 1.0C. more than 1.0D. none of these

Answer» Correct Answer - A
Discussion
857.

(i) What meant by respiratory quotient (RQ) ? (ii) what is the value of RQ for glucose fats and proteins ?

Answer» (i) the ratio of the volume of `CO_(2)` produced to the volume of `O_(2)` used in a unit time is called respiratory quotient (RQ).
(ii) Value of RQ for glucose is 1: for fats is 0.7 and for proteins is 0.85
Discussion
858.

What is respiratory quotient ? Give RQ for carbohydrates fats and proteins

Answer» The ratio of the volume of `CO_(2)` produced to the volume of `O_(2)` used in a unit time is called respiratory quotient (RQ) . RQ for carbohydrates , fats and proteins is 1, 07 and 0,85 respectively .
Discussion
859.

What is meant by Respiration Quotient (RQ) ? When will the value of RQ be 1 and when will it be less than 1 ?

Answer» Respiratory Quotient (RQ) is the ratio of volume of `CO_(2)` exhaled and `O_(2)` inhaled during breathing . Value of RQ will be 1 when both the volumes are same and less than 1 when `CO_(2)` exhaled is less and `O_(2)` inhaled is more.
Discussion
860.

Listed below are four respiratory capacities (i-iv) and four jumpled respiratiory volumes of a normal human adult. `{:(,"Respiratory volumes and capacities","Volume of air"),((i),"Residual volume","1200 mL"),((ii),"Vital capacity","4500 mL"),((iii),"Inspiratory reserve volume","2500 mL"),((iv),"Inspiratory capacity","3500 mL"):}`A. `(ii) 2500 mL, (iii) 4500 mL`B. `(iii) 1200 mL, (iv) 2500 mL`C. `(iv) 3500 mL, (i) 1200 mL`D. `(i) 4500 mL, (ii) 3500 mL`

Answer» Correct Answer - C
`{:("Respiratory volumes and capacities","Volume of air"),("Residual volume","1200 mL"),("Vital capacity","4500 mL"),("Inspiratory reserve volume","2500 mL"),("Inspiratory capacity","3500 mL"):}`
Discussion
861.

Complete the following sentences by selecting the correct option. (A) Inspiratory capacity `(IC) = overset((i))"_________" + IRV` (B) `overset((ii))"________" = TV + IRV + ERV` (C) Funcational residual capacity `(FRC) = ERV + overset((iii))"_________"`A. `{:("(i)",(ii),(iii)),("Vital capacity","Tidal Volume","Residual volume"):}`B. `{:("(i)",(ii),(iii)),("Expiratory capacity","Residual volume","Inspiratory reserve volume"):}`C. `{:("(i)",(ii),(iii)),("Tidal volume","Vital capacity","Residual volume"):}`D. `{:("(i)",(ii),(iii)),("Tidal volume","Total lung capacity","Expiraoty capacity"):}`

Answer» Correct Answer - C
Discussion
862.

What is the value of expiratory reserve volume (ERV) ?

Answer» Correct Answer - 1000 ml to 1100 ml
Discussion
863.

Match column I with column II and select the correct option from the codes given below.`{:(,"Column I",,"Column II"),(A.,"TV + ERV",(i),Expiratory Capacity),(B.,"RV + ERV + TV + IRV",(ii),"Total Lung Capacity"),(C.,"ERV + RV",(iii),"Functional Residual Capacity"):}`.A. `A-(i), B-(ii), C-(iii)`B. `A-(iii), B-(i), C-(ii)`C. `A-(iii), B-(ii), C-(i)`D. `A-(ii), B-(iii), C-(i)`

Answer» Correct Answer - A
Discussion
864.

State the different modes of `CO_(2)` transport in blood.

Answer» (i) Physical solution form (ii) In the form of bicarbonate ions
(iii) In carboaminohaemoglobin form.
Discussion
865.

Consider the following four statements (I - iv) and select the correct option stating which ones are true (T) and which ones are false (F). (i) Formation of oxyhaemoglobin occurs on alveolar surface. (ii) During gaseous exchange the gases diffuse from high particle pressure to low partial pressure. (iii) Carbon dioxide cannot be transporteed width haemoglobin. (iv) Earthworm respires through parapodia.A. `{:("(i)",(ii),(iii),(iv)),(T,F,T,F):}`B. `{:("(i)",(ii),(iii),(iv)),(F,F,T,F):}`C. `{:("(i)",(ii),(iii),(iv)),(F,T,F,T):}`D. `{:("(i)",(ii),(iii),(iv)),(T,T,F,F):}`

Answer» Correct Answer - D
About `20-25% CO_(2)` is carried by haemoglobin as carbaminohaemoglobin. Earthworm respires through body wall.
Discussion
866.

Consider the following four statements (I - iv) and select the correct option stating which ones are true (T) and which ones are false (F). (i) Formation of oxyhaemoglobin occurs on alveolar surface. (ii) During gaseous exchange the gases diffuse from high particle pressure to low partial pressure. (iii) Carbon dioxide cannot be transporteed width haemoglobin. (iv) Earthworm respires through parapodia.

Answer» (a) True (b) False (c ) True , (d) False ( e) False
Discussion