The first heart sound is produced when
diastole begins
semilunar valve close quickly
interventricular pressure decrease
bicuspid and tricuspid valve close quickly
D.
bicuspid and tricuspid valve close quickly
During working of heart two sounds are produced lub and dub. First sound (i.e., lub) is produced when auriculoventricular (tricuspid and bicuspid) valves are closed or at the end of diastole. The second sound (i.e., dub) is produced when semilunar valves at the base of dorsal aorta are closed or at the end of systole.
Which of the following is a transparent tissue
Tendon
Hyaline cartilage
Fibrous cartilage
All of these
Which of the following is the part of mid brain of rabbit?
Diencephalon
Cerebrum
Corpora quadrigemina
None of the above
Blood calcium level can be increased by the administration of
glucagon
thyroxine
parathormone
caleitonin
The epithelial lining in the alveoli of the frogs facing lung cavity is
squamous ciliated
columnar ciliated
columnar nonciliated
squamous nonciliated
Which of the following assists in the locomotion of the organism stated
Epithelium of' Pheretima
Trichocysts of Paramecium
Pedicellaria of Star fish
Posterior sucker of Hirudinaria
