Kupffer cells are present in
liver
small intestine
pancreas
thyroid gland
A.
liver
Kupffer cells are the phagocytic cells present over the lining of sinusoids in liver. They destroy WBCs and RBCs and bacteria.
Small intestine consists of paneth cells and Argentaffin cells secreting digestive enzymes. They are present on tubular pits of intestinal glands known as crypts of Lieberkuhn.
Pancreas consists of groups of cells, islets of Langerhans which contain 4 types of cells- Alpha cells, Beta cells, Delta cells and F- cells.
Thyroid gland consists of spherical sacs called thyroid follicles. Its wall is made up of two types of cells- Principal cells and Parafollicular cells.
Contractile vacuole in protozoan Amoeba is meant for
respiration
excretion
locomotion
osmoregulation
During inspiration, the diaphragm
expands
shows no change
contracts and flattens
relaxes to become dome- shaped
The leucocytes contain which of the following in large quantity?
Basophils
Neutrophils
Eosinophils
Monocytes
Which one is component of Ornithine cycle?
Ornithine, citrulline and alanine
Ornithine, citrulline and arginine
Amino acid are not used
Ornithine, citrulline and fumaric acid
The function of pineal body is to
lighten the skin colours
control sexual behaviour
regulates the period of puberty
All of the above
Which of the following is important for muscle contraction and nerve impulse transmission?
Ca2+ ions
Mg2+ ions
Both (a) and (b)
Fe2+ ions
