The anatomy and physiology instructor discusses the thalamus with the nursing class. The instructor tells the students that the thalamus does what?
A) Relays motor impulses from the cortex to the spinal cord
B) Is responsible for voluntary movement
C) Sends information into the cerebrum to transfer sensations
D) Helps maintain red blood cell (RBC) production
C
Feedback:
The thalamus sends direct information into the cerebrum to transfer sensations, such as cold, heat, pain, touch, and muscle sense. Motor fibers from the cortex cross to the other side of the spinal cord before emerging to interact with peripheral effectors. In this way, motor stimuli coming from the right side of the brain affect motor activity on the left side of the body. The limbic system is not responsible for voluntary movement or RBC production.
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