You are walking to class, pondering the intricacies of physiology, when you trip over an uneven place in the sidewalk, and fall. Unhurt but embarrassed and angry, you jump up and glance around to see if anyone is watching. From your knowledge of neuroanatomy and function, explain how the following areas of the brain might be involved in this scenario:
A. cerebrum
B. cerebellum
C. limbic system
A. The cerebrum is involved in conscious perception and voluntary motor control. Various sensory areas of the
cortex will detect the mis-step, falling, and landing on the ground. Motor areas will initiate standing up and
brushing yourself off.
B. The cerebellum receives a copy of the motor output from the cerebrum that controls spinal motor neurons, and
also sensory input. The cerebellum compares the sensory and motor information to coordinate the execution of
movement. Obviously the cerebellum was unable to prevent you from falling; however, your return to an upright
position may be executed smoothly thanks to this brain area.
C. The limbic system is involved in emotion. This is where your fear, anger, or embarrassment at falling will arise.
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