Question

1. what does the diagnostic term my/asthenia gravis actually mean?

muscle heavy and weak
muscle strong and full
muscle tone hard
muscle feeling great

1. en/cephal/o- refers to the:

cerebellum
spinal cord
brain
nerve root

Explanation:

Question 15

To determine the meaning of "myasthenia gravis", we analyze the word parts. "My/o" means muscle, "asthenia" means weakness, and "gravis" means severe or heavy. So combining these, it relates to muscle being heavy (severe) and weak. The other options don't match the word roots: "strong and full" is opposite of weakness, "muscle tone hard" doesn't relate to "asthenia" (weakness), and "muscle feeling great" is incorrect as myasthenia gravis is a disorder causing muscle weakness.

The combining form "encephal/o" (from "en/cephal/o-") refers to the brain. "Cerebellum" is a part of the brain but the root "encephal/o" is for the brain in general, "spinal cord" is "myel/o", and "nerve root" is not related to "encephal/o".

Answer:

A. muscle heavy and weak

Question 16