A 32-year-old man has trouble tying his shoelaces, writing, and walking in a straight line. A computed tomographic (special x-ray) scan of the brain would likely reveal that the man has an abnormality in the
A. cerebrum
B. cerebellum
C. brain stem
D. diencephalon
I'm not sure if it's A or B.
Since this is your final exam for this Penn Foster course, I urge you to go back and study your course materials.
We certainly don't want to cheat you out of an education by telling you the answer.
cerebellum
To determine the answer to this question, we need to identify the part of the brain that is responsible for motor coordination and fine motor skills.
The cerebrum, option A, is mainly responsible for higher cognitive functions such as thinking, sensory perception, and voluntary muscle movements. While it plays a role in motor coordination, the symptoms described in the question are more indicative of a problem with motor control.
The cerebellum, option B, is connected to the brainstem and plays a crucial role in coordinating voluntary movements, maintaining balance and posture, and fine motor control. Dysfunction in the cerebellum can lead to difficulties with coordination, impaired fine motor skills, and unsteady gait, which are all symptoms described by the man.
Therefore, based on the symptoms mentioned, the most likely answer is B. cerebellum. A computed tomographic (CT) scan of the brain would likely reveal an abnormality in the cerebellum.