Multiple Choice QuestionsIf due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?
The flow of blood into the aorta will be slowed down
The 'pacemaker' will stop working
The blood will tend to flow back into the left atrium
The blood will tend to flow back into the left atrium
D.
The blood will tend to flow back into the left atrium
Strong, thread-like tendons, called chordae tendinae, arise from papillary muscles and valves. The valves in the heart allow the flow of blood only in one direction, i.e, from the atria to the ventricles and from the ventricles to pulmonary artery or aorta. If chordae tendinae of the tricuspid valve became partially non-functional due to injury then the flow of blood into the pulmonary artery will be reduced.
What is true about RBCs in humans?
They carry about 20-25 percent of CO2
They transport 99.5 percent of O2
They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma
They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma
The haemoglobin content per 100 mL of blood of a normal healthy human adult is
5-11 g
25-30 g
17-20 g
17-20 g
Jaundice is a disorder of
excretory system
skin and eyes
digestive system
digestive system
ABO blood grouping is controlled by gene I, which has three alleles and show codominance, There are six genotypes. How many phenotypes in all are possible.?
Six
Three
Four
Four
In a standard ECG, which one of the following alphabets is the correct representation of the respective activity of the human heart?
R-repolarisation of ventricles
S- start of systole
T -end of diastole
T -end of diastole
Compared to blood our Lymph has
no plasma
plasma without proteins
more WBCs and no RBCs
more WBCs and no RBCs
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
one antibody only-either anti-A or anti- B on the RBCs
Globulins contained in human blood plasma are primarily involved in
defence mechanisms of the body
the osmotic balance of body fluids
oxygen transport in the blood
oxygen transport in the blood
The blood calcium level is lowered by the deficiency of
parathormone
thyroxine
calcitonin
calcitonin
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