Which of the following is true about Endocrine system
(1) It is not directly connected with organs
(2) Response is slow
(3) coordinates through secretion of hormones
(4) All of the above
Which of the following is true about Endocrine glands
(1) Ductless glands
(2) Secretion is hormones
(3) Pour its secretion into lymph and venous blood
(4) All of these