Concept explainers
When Ralph had brain surgery to remove a small intracranial hematoma (blood mass), the operation was done under local anesthesia because he was allergic to general anesthetic agents. The surgeon removed a small part of the skull, and Ralph remained conscious. The operation went well, and when Ralph asked the surgeon to stimulate his (unharmed) postcentral gyrus mildly with an electrode, the surgeon did so. Indicate which of the following happened, and explain why: (a) Ralph was seized with uncontrollable rage. (b) He saw things that were not there. (c) He asked to see what was touching his hand, but nothing was. (d) He started to kick. (e) He heard his mother's voice from 30 years ago.
Want to see the full answer?
Check out a sample textbook solutionChapter 13 Solutions
Human Anatomy Laboratory Manual With Cat Dissections (9th Edition)
- When a patient flexes their neck, the head tips to the right side. Also, their tongue sticks out slightly to the left when they try to stick it straight out. Where is the damage to the brain stem most likely located?arrow_forwardDue to a traumatic injury to Daniel's head, he has to go through a critical surgery where a part of his brain called as hippocampus has been removed by the neurosurgeon. Based on your knowledge, what will the consequence of such surgery on Daniel's brain function and what kind of challenges, he is likely to face if he survived post critical surgery? Justify your answer.arrow_forwardWhen their second child was born, Kiko and Taka were told their baby had spina bifida and would be kept in intensive care for a week. After that time, a “shunt” would be put in. Also, immediately after the birth, an operation was performed on the infant’s lower back. The parents were told that this operation went well but that their son would always be a “little weak in the ankles.” Explain the statements in quotation marks in more informative and precise language.arrow_forward
- Subcortical structures in humans are quite similar to corresponding brain areas in most animals with spinal cords. Why would knowing this allow you to predict, in general terms, what functions the subcortex controls?arrow_forwardSelect the best answer or answers from the choices given: The primary motor cortex, Broca’s area, and the premotor cortex are located in which lobe? (a) frontal, (b) parietal, (c) temporal, (d) occipital.arrow_forwardA 78-year-old male presents for a hospital follow-up, post-stroke, two days ago. During the neurologic portion of the physical exam, the patient cannot feel the cotton tip of an applicator as you brush it along his left forehead, cheek, and jaw on the left side of his face. Based on this scenario and phsyical exam findings, which of the following cranial nerves is most likely affected? Answers: A-D A Cranial nerve 9 B Cranial nerve 12 C Cranial nerve 5 D Cranial nerve 7 Oarrow_forward
- When removing cerebrospinal fluid during a spinal tap, the needle is inserted below L2. Explain why spinal taps are not done above this level.arrow_forwardThe cranial nerve is actually an extension of the brain, not a nerve at all! O oculomotor (1II) O optic (II) facial (VII) O olfactory (I)arrow_forward(a) Which structure of the brain makes up 80% of the diencephalon?(b) Why is this structure known as the “gateway” to the cerebral cortex?arrow_forward
- A 28-year-old man had a bad fall when playing soccer. He does not lose consciousness. About 36 hours later, he develops a headache and confusion and is taken to the ED. On physical examination, he is conscious and a minor fracture is identified in the temporal area. You suspect that the patient has an intracranial hemorrhage, and send the patient to a radiologist for CT examination. Which of the following is the most likely location with the best explanation of the intracranial hemorrhage of this patient? Subdural hematoma due to rupture of bridging veins crossing the subdural space Epidural hematoma due to rupture of bridging veins crossing the subdural space Subdural hematoma due to rupture of middle meningeal artery Epidural hematoma, due to rupture of middle meningeal arteryarrow_forwardSomatic sensory nuclei of the spinal cord are located in the lateral horns. a.) true b.) falsearrow_forwardDuring a robbery at his convenience store, Dustin was shotin the right cerebral hemisphere. He survived, although somespecific functions were impaired. Would Dustin have been morelikely or less likely to have survived if he had been shot in thebrainstem? Why?arrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningFundamentals of Sectional Anatomy: An Imaging App...BiologyISBN:9781133960867Author:Denise L. LazoPublisher:Cengage Learning
- Surgical Tech For Surgical Tech Pos CareHealth & NutritionISBN:9781337648868Author:AssociationPublisher:Cengage