The endocrine system is made up of ————————————
A: the endocrine glands and the hormones they secrete.
B: the endocrine glands
A: the endocrine glands and the hormones they secrete.
B: the endocrine glands
举一反三
- Endocrine glands secrete amino acids.
- The endocrine system consists of endocrine glands and endocrine cells scattered in certain tissues and organs.
- The endocrine system consists of endocrine glands and endocrine cells scattered in certain tissues and organs. A: 正确 B: 错误
- About the endocrine glands, which one is incorrect? () A: Endocrine glands are ductless glands B: There are nine major endocrine glands and several other organs C: Based on the function, endocrine glands can be divided into two types D: Adrenal glands belongs to the mixed glands
- About the endocrine glands, which one is (())<br/>? () A: Endocrine glands are ductless glands B: There are nine major endocrine glands and several other organs C: Based on the function, endocrine glands can be divided into two types D: Adrenal glands belongs to the mixed glands