Heparin is secreted by
mast cell
alveolar cell
plasma cell
goblet cell
A.
mast cell
Heparin is released from mast-cells. It is an anticoagulant which prevents activation of prothrombin.
Alveolar cells secrete pulmonary surfactant to lower the surface tension of water and allows the membrane to seperate, therefore increasing its capability to exchange gases.
Plasma cells are WBCs or White Blood Cells secrete large volumes of antibodies.
Goblet cells secrete mucus in order to protect the mucous membranes where they are found.
Haemophilia is more commonly seen in human males than in human females because
this disease is due to an X- linked dominant mutation
a greater proportion of girls die in infancy
this disease is due to an X- linked recessive mutation
this disease is due to a Y- linked recessive mutation
The epithelial lining in the alveoli of the frogs facing lung cavity is
squamous ciliated
columnar ciliated
columnar nonciliated
squamous nonciliated
G-6-P dehydrogenase deficiency is associated with haemolysis of
lymphocytes
RBCs
platelets
leucocytes
CO is harmful to human being because
it decreases CO2 concentration
it competes O2 to combine with haemoglobin
it is carcinogenic
it depletes O2 layer
Which of the following substances, if introduce in the blood stream, would cause coagulation, at the site of its introduction?
Fibrinogen
Prothrombin
Heparin
Thromboplastin
The first heart sound is produced when
diastole begins
semilunar valve close quickly
interventricular pressure decrease
bicuspid and tricuspid valve close quickly
