Neuroanatomy
ByAdmin
Week- 3 Neuroanatomy >>> Understanding the Brain: The Neurobiology of Everyday Life
1. Neurons from all over the cerebral cortex send axons to the brainstem and spinal cord. Considering what you know about how the telencephalon develops into the mature brain, which of the following describes a possible path that an axon could take from the occipital cortex to the pons?
1 point
2. You meet a person with a peculiar temperament and odd-looking skin. Her skin is dry and scaly and on her eyelids there are little bumps. She appears fearless and socially uninhibited. Which of the following do you think is the most likely explanation for this presentation?
1 point
3. Traumatic brain injuries (commonly called concussions) typically do not occur in response to low force blows because the brain is (choose one):
1 point
4. You meet a person that appears normal in all ways except for two characteristics. First, the person’s facial expression never changes: it is always neutral. Second, neither eye moves away from the nose (“eye abduction”). Damage at which level of the nervous system is involved?
1 point
5. A man is thrown from a horse and lands hard on his buttocks, harming the nerve fibers in the cauda equine (this is called cauda equine syndrome) as they travel to exit from the spinal canal. All of a sudden he is unable to void urine or feces. Assuming that all resulting symptoms arise from damage to nerve roots from the same part of the spinal cord that is important to voiding, which of the following symptoms do you expect will accompany this man’s voiding issues? Check all that apply.
1 point
6. About 80-85% of the visual field is visible from both eyes. However, the far edges of the right and left visual fields are only visible from the eye on the same side. These far edges are monocular (visible only from one eye) “crescents” (they are indeed shaped as crescents) and are distinct from the far larger binocular fields (visible to both eyes). Which of the following are correct? Check all that apply.
1 point
7. A healthy person is the victim of a stab wound in the back that damaged one side of the spinal cord. Which of the following are potential outcomes of the stabbing? Check all that apply.
1 point
8. Considering that the brainstem contains both neurons that reside in the brainstem (eg motoneurons) and axons that are passing through (eg corticospinal axons), which of the following are true? Check all that apply.
1 point
9. Consider the inherited condition of congenital insensitivity to pain accompanied by the inability to sweat. This disorder stems from a mutation that prevents normal development of the nervous system. Which of the following is correct?
1 point
10. You discover a new fish that has a pair of prehensile (moveable) fins with finger-like protuberances. These fins are located on either side of the trunk at the bottom of the rib cage. This fish has exquisite motor control of the fin and can sense very light touch applied to the protuberances. In fact, the fish’s motor control of and sensory sensitivity from its fin protuberances are similar to our ability to move and sense fine touch on our fingers. In this fish, which of the follow is likely to be true?
1 point
