Which one of the following statements about blood constituents and transport of respiratory gases is most accurate?
RBCs transport oxygen whereas WBCs transport CO2
RBCs transport oxygen whereas plasma transports only CO2
RBCs as well as WBCs transport both oxygen and CO2
RBCs as well as plasma transport both oxygen and CO2
The carbon dioxide is transported via blood to lungs as
dissolved in blood plasma
in the form of carbonic acid only
in combination with haemoglobin only
carbaminohaemoglobin and as carbonic acid
Severe Acute Respiratory Syndrome (SARS)
Is caused by a variant of Pneumococcus pneumonniae
Is caused by a variant of the common cold virus (corona virus)
Is an acute form of asthma
Affects non-vegetarians much faster thn vegetarins
AIDS is caused by HIV that principally infects
all lymphocytes
activator B-cells
T4 lymphocytes
cytotoxic T-cells
The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because 'O' in it refers to having
other antigens besides A and B on RBCs
over dominance of this type on the genes for A and B types
One antibody only-either anti-A or anti-B on the RBCs
on antigens A and B on RBCs
When the oxygen supply to the tissue is inadequate , the condition is
Dyspnea
Hypoxia
Asphyxia
Apnea
In humans, blood passes from the post caval to the diastolic right atrium of heart due to
pushing open of the venous valves
suction pull
stimulation of the sino auricular node
pressure difference between the post caval and atrium.
Carbon dioxide is transported from tissues to respiratory surface by only
plasma and erythrocytes
plasmas
erythrocytes
erythrocytes and leucocytes
When CO2 concentration in blood increases, breathing becomes
shallower and slow
there is no effect on breathing
slow and deep
faster and deeper
The thickening of walls of arteries is called
arthritis
artherosclerosis
anaeurysm
Both (a) and (c)
