How many times does a heart beat per minute?
72 times.
Match the following options.
A. Haemolymph | (i) Immuntiy |
B. R.B.C. | (ii) Coagulation |
C. Antibody | (iii) Cockroach |
D. Antibody | (iv) astr ansport |
E. systole | (v) Contraction |
Name a animal having open circulatory system.
Which is the largest vein?
What does the QRS wave represent in an ECG?