It's a simple yet quite practical quiz on one-step equations. For a formal introductory definition on the topic, it's an algebraic equation which is solved in just one step, that's why it's called so. Now, here...
For those of you who love all things biology and living organisms especially anatomy and how stuff works in the human body then, USMLE Step 1 Qs (9 is for you. If you are prepared to test your knowledge try it out.
Questions: 50 | Attempts: 110 | Last updated: Aug 4, 2017
Emma is a 64-year-old woman
who has had heart disease for many years. While carrying chemicals down the
stairs of the dry-cleaning shop where she worked, she suddenly lost control of
her right leg and arm. She fell down the stairs and was able to stand up with
some assistance from a coworker. When attempting to walk on her own, she had a
very unsteady gait, with a tendency to fall to the right side. Her supervisor
asked her if she was all right, and noticed that her speech was very slurred when
she tried to answer. He called an ambulance to take her to the nearest
hospital. The physician who was called to see Emma in the emergency room noted
that her speech was slurred as if she were intoxicated, but the grammar and
meaning were intact. Her face appeared symmetric, but when asked to protrude
her tongue, it deviated toward the left. She was unable to tell if her right
toe was moved up or down by the physician when she closed her eyes, and she
couldn't feel the buzz of a tuning fork on her right arm and leg. In addition,
her right arm and leg were markedly weak. The physician could find no other
abnormalities on the remainder of Emma's general medical examination.
Where in the nervous system could a lesion occur that causes arm and leg
weakness, but spares the face?