21.
Dead air is not involved in respiration because
A
It is present deep in the lungs
B
It is very low quantity
C
It is trapped in nasal passage
D
It contains less Oxygen
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Dead air is not involved in respiration because
It is present deep in the lungs
It is very low quantity
It is trapped in nasal passage
It contains less Oxygen
2,3 DPG causes shifting of Oxygen dissociation curve in Adult Hb to Right because
It lacks Hb binding sites
It increases Oxygen affinity for Hemoglobin
It binds to Beta chain of Hb
Its concentration is high in adults
Mammalian RBC respire anaerobically because
It has bicarbonate ions inside
It has stroma inside
It has Haemoglobin
It lacks Mitochondria
During transportation of Carbon dioxide, blood will not become acidic, because
It contains high
It contains hemoglobin
It contains Hemoglobinc acid
It contains Buffers
Foetal hemoglobin has great affinity than adult hemoglobin because
Its polypetide chains bind very fast with Oxygen
It binds 2,3 DPG less avidity by Gamma polypeptide chain than HbA
Its concentration is very high
Foetal blood gets oxygen from the mother
Pinnaglobin is a brown coloured blood pigment present in the plasma of the mollusk Pinn. It contains
Vanadium
Iron
Copper
Manganese
Diaphragm is supplied with Phrenic nerve and is involved in
All these
Inspiration
Parturition
Micturition and Defecation
Tracheal respiration is found in
Starfish and Sea cucumber
Insects and Millipedes
Scorpion and Prawn
Pila and Lobuster
Pneumotaxic center is
None of these
Inhibitory
Accelatory
Activating
Hiccup is due to
Acidity in the stomach
Increased inspiration
Irritation of Phrenic nerve
Expanded stomach
Haldane effect refers to
Decreases tension
Increased uptake to minimize tension
Increased tension
Decreased tension
When Bohr effect occurs due to increased tension, Oxygen affinity of Hb decreases . The reason for increased tension is
High content
Increase in P50
Decrease in P50
High content
Methamoglobin is the oxidized form of Hemoglobin that can not deliver oxygen and has a Bluish colour thatimpart a Cyanotic hue to tissues. It appears when
At the time of Asphyxiation
At the time of Diving
Both a and b
In the genetic deficiency of Glucose – 6 phosphate dehydrogenase
Respiratory alkalosis is the increase in blood Ph and can be treated using the drug Acetazolamide which blocks Carbonic anhydrase enzyme. The main cause of Respiratory alkalosis is
Hyperventilation
Low Carbon dioxide level
High HB content
Hypoventilation
The Pseudostratified ciliated columnar epithelium lining the trachea is composed of
Macrophages
Fibroblast
All these
Goblet cells
In Carbon monoxide poisoning, Hemoglobin shows about 250 times greater affinity with than oxygen and Carbon The immediate remedy is monoxy heamoglobin( COHb ). This causes Oxygen starvation and Asphyxi
Dialysis
Giving pure Oxygen – Carbon dioxide mixture
Transfusing blood
Giving pure Oxygen
Chloride shift occurs from the plasma to the RBC and is meant for
Formation of Bicarbonates
To keep electrostatic neutrality of RBC menbrane
To transport
Formation of Hemoglobinic acid
Foetal hemoglobin has a Sigmoid dissociation curve which is shifted to left relative to adult Hb because
Foetal HB has lower P50 ( 18-20 mm Hg ) than Adult Hb ( 26.6 mm.Hg )
Foetal Hb readily accept Oxygen
Foetal Hb easily remove Carbon dioxide
Foetal Hb has higher P50
Double Bohr effect ( Oxygen curves for maternal and foetal Hb move apart in opposite directions ) occurs in
Maternal circulation
In the Placenta operating in both maternal and foetal circulations
In the uterine wall
Foetal circulation
Most of the Antibiotics against Tb are not effective as the Tubercle bacterium has a resistive covering. One of the following drug is effectively used to control TB
Streptomycin
Rifampicin
Penicillin
Ethambutol