Question

Answer this questions if u are sure.....
Name the following.
1.The depression on the concave side of the kidney.
True or false.. Correct if false..
2.Nitrogenous wastes are produced by break down of fat.
Odd one our.Reason
3.SA node, tricuspid valve,bicuspid valve,pulmonary vein.
4.Function of chromosome

Answer 1

I know answer of exactly question 3 it is pulmonary vein as all are present inside heart but not pulmonary vein