Question

study of *
gastr/o
-ology
-ologist
dors/o

-lysis *
stopping, controlling
physical function
loosening, destruction
lower part of body, tail

chest *
chondr/o
pleur/o
thorac/o
hist/o

Explanation:

1. The suffix “-ology” means the study of. “Gastr/o” refers to the stomach, “-ologist” is a person who studies, and “Dors/o” refers to the back.
2. The suffix “-lysis” means loosening, destruction. “Stopping, controlling” is not its meaning, nor is “physical function” or “lower part of body, tail”.
3. “Thorac/o” refers to the chest. “Chondr/o” refers to cartilage, “Pleur/o” refers to the pleura, and “Hist/o” refers to tissue.

Answer:

1. -ology
2. Loosening, destruction
3. Thorac/o