During emergency, which of the following hormone is secreted ?
Aldosterone
Thyroxine
Adrenalin
Calcitonin
Which of the following is a transparent tissue ?
Tendon
Fibrous cartilage
Hyaline cartilage
All of the above
Which of the following cell type is capable of giving rise to other cell types in sponges ?
Thesocytes
Pinacocytes
Cnidocytes
Archaeocytes
The islets of Langerhans are found in
pancreas
stomach
liver
alimentary canal
A.
pancreas
The pancreatic islets or islets of Langerhans are the regions of the pancreas that contain its endocrine (hormone-producing) cells. There are 3 types of cells-
(i) Alpha cells (32-38%) secreting glucagon
(ii) Beta cells (60-70%), secreting insulin
(iii) Delta and F-cells (2-8%), secreting somatostatin.
Malpighian tubµles are
excretory organs of insects
excretory organs of frog
respiratory organs of insects
endocrine glands of insects