Multiple Choice 1. Which of the following statements concerning the brainstem is true? A) The brainstem consists of the medulla, pons, and cerebellum. B) The brainstem is responsible for higher level thinking skills. C) Damage to the brainstem is usually fatal. D) All twelve cranial nerves enter or exit from the brainstem. E) The brainstem is a relay for sensory input. Answer: c Level: 1 2. In the CNS, clusters of gray matter containing cell bodies are called A) nuclei. B) pyramids. C) tracts. D) peduncles. E) ganglia. Answer: a Level: 1 3. The fact that the right side of the brain controls the left side of the body is explained by the A) division of the cerebrum into two hemispheres. B) division of the cerebellum into two hemispheres. C) decussation of the pyramids in the medulla. D) need for contra-lateral control of body function. E) brainstem being below the midbrain. Answer: c Level: 1 4. Which of the following is correctly associated with the medulla oblongata? A) It gives rise to conscious thoughts. B) It contains nuclei for regulation of heart rate and blood vessel diameter. C) It contains enlargements called cerebral peduncles. D) It is the most superior portion of the brainstem. E) It relays sensory information. Answer: b