In developing embryo RBCs are formed in
  • Lymph node
  • Bone marrow
  • Liver
  • Spleen
In humans, blood passes from the post caval to the diastolic right atrium of heart due to:
  • Pressure difference between the post caval and atrium
  • Pushing open of the venous valves
  • Suction pull
  • Stimulation of the sino auricular node
When body tissues are injured resulting in the loss of blood, the process of blood clot begins and the blood platelets release
  • Fibrinogen
  • Thrombin
  • Prothrombin
  • Thromboplastin
An adult human has systolic and diastolic pressures as:
  • 80 mm Hg and 120 mm Hg
  • 120 mm Hg and 80 mm Hg
  • 50 mm Hg and 80 mm Hg
  • 80 mm Hg and 80 mm Hg
Duration of cardiac cycle is
  • 0. 7 sec
  • 0. 9 sec
  • 0. 8 sec
  • 0. 11 sec
In the above picture Q represents
  • exitation of the atria
  • depolarisation of ventricles
  • begining of systole
  • repolarisation
Oxygenated blood occurs in
  • Pulmonary artery
  • Right atrium
  • Right ventricle
  • Pulmonary vein
The cells lining the blood vessels belong to the category of
  • Columnar epithelium
  • Connective tissue
  • Smooth muscle tissue
  • Squamous epithelium
Heart failure occurs due to
  • heart stops beating
  • damage of heart muscles
  • congestion of lungs
  • all of the above
Artificial pace maker is transplanted in
  • Inter auricular septum
  • Below the collar bone
  • Inter ventricular septum
  • Right auricle
Which of the following statement/statements can be related to erythroblastosis foetalis?
  • Severe anemia and jaundice to the baby.
  • Can be avoided by giving anti-Rh antibodies to mother immediately after delivery of the first child.
  • Rh-antibodies from the Rh -ve mother destroys foetal RBCs.
  • All of the above
Among the following stem cells, which are found in the umbilical cord?
  • Cord blood stem cells
  • Adult stem cells
  • Embryonic stem cells
  • All of the above
If vagus nerve is cut the heart beat
  • increases
  • decreases
  • will not be affected
  • will stop immediately
If 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 pulmonary artery will be reduced
  • 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
Heparin is
  • Anti-allergic
  • Blood diluter
  • Anticoagulant
  • Antiseptic
Cardiac arrest is the state when
  • heart stops beating
  • inadequate blood supply to the heart
  • heart not pumping enough to meet the body needs
  • blood pressure increases
What is the normal blood pressure of human beings?
  • 110/70
  • 120/70
  • 120/80
  • 110/80
Arteries are best defined as the vessels which
  • Carry blood from one visceral organ to another visceral organ
  • Supply oxygenated blood to the different organs
  • Carry blood away from the heart to different organs
  • Break up into capillaries which reunite to form a vein
Christmas disease is also known as
  • Haemophilia B
  • AIDS
  • Haemophilia A
  • Haemolytic jaundice
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