A carcinoma is a cancer originating from -

The mammalian heart is myogenic and it is regulated by nerves. The heartbeat originates from

Human eye can see objects at different distances with contrasting illuminations. This is due to

Which one of the following is the structure of a cardiac muscle cell?

Cartilage is NOT found in

Mammalian heart is myogenic and regulated by specialized nodal tissue. Where does the cardiac impulse originate?