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.
You might also like to view...
The stimulus for increased erythropoiesis secretion is
a. low oxygen levels in the bone marrow b. low oxygen levels in the kidney c. a hormone produced by the bone marrow d. a hormone produced by the liver e. none of the above
Which of the following would increase heart rate?
cold temperature parasympathetic stimulation epinephrine low metabolic rate
A 10% dextrose solution is isotonic to plasma.
Answer the following statement true (T) or false (F)
Why does an increase in carbon dioxide increase the quantity of hydrogen ions in blood?
A) When carbon dioxides dissolves in water, it releases hydroxides. B) When carbon dioxide mixes with water, it loses two electrons. C) When carbon dioxide mixes with blood, it slows the transfers of hydrogen ions. D) When carbon dioxide is dissolved in water, it forms carbonic acid.