Give the locations of S-A node and A-V node.

Give the location of A-V node.

Contrast between the following : (a) S-A node and A-V node. (b) Atrial systole and ventricular systole. (c ) Mitral valve and semilunar valve. (d) Effects of sympathetic nerves and vegus on the heart.

Give the functions of lymph nodes.

Give the functions of lymph nodes.

Write the role of SA node and AV node in heart functions.

Differentiate between S.A node and A.V. node.

Location of lymph nodes in human body.

Differentiate between SA node and AV node.

Differentiate between SA node and AV node