Author Question: Chemical substances produced by the body that are similar in their effects to morphine are known as ... (Read 100 times)

Lisaclaire · **on:** Jul 11, 2018

Chemical substances produced by the body that are similar in their effects to morphine are known as __________.
Fill in the blank(s) with correct word

Question 2

Josie is doing active progressive muscle relaxation. Once a group of her muscles are contracted sufficiently, she should hold them in this state of tension for ____ seconds.
a. up to 8
b. 10-20
c. 20-30
d. 30-40
e. up to 60