Multiple Choice: Write the letter of the correct answer.
1. uses neurons to send and deliver messages that are fast acting, localized, and short-lived.
a. Endocrine System
b. Nervous System
c.Circulatory System
2. sends slower-moving hormones through the blood that target broad areas and have more lingering effects.
a. Endocrine System
b. Nervous System
c. Circulatory System
3. cook up hormones and secrete them into the blood without using ducts.
a. Endocrine gland
b. Nervous gland
c.Circulatory gland
4. A is a just any structure that makes and secretes a hormone.
a. organ
b. gland
c. cell
5. is the master gland of the body.
a. Endocrine gland
b. Pituitary gland
c. Thyroid gland