Which statement about the venous drainage of the adrenal gland is correct?
1) Some venous blood from the adrenal gland goes into inferior phrenic v. first before eventually back to IVC
2) There are two adrenal vv. on the left side, and one on the right side
3) All venous blood from the left adrenal gland go back to IVC directly
4) There is only one suprarenal v. for each adrenal gland