Exam 9: The Nervous System: Central Nervous System

Which of the following forms myelin in the central nervous system?

Which area of the brain plays an important role in sleep- wake cycles, arousal of the cerebral cortex, and consciousness?

Which of the following areas of the brain is involved in coordinated movement?

Liz is a seventy- year- old woman who is both a wife and a mother. She is moderately obese (BMI 32), and has smoked a half a pack to a pack of cigarettes a day since she was 16 years old. Liz awakes one morning with weakness on her right side. She is confused, sees double, and has slurred speech. She stumbles and has an awkward gait trying to get to the restroom, where she collapses. Her husband calls 911 and Liz is transported to the hospital. Upon physical examination, Liz is found to have partial paralysis (hemiparesis)on her right side and diminished sensitivity to a pin prick on her arm and right side of her face. She has difficulty answering questions, speaking only a few words which are slurred and grammatically incorrect. Her ability to respond to verbal commands, whether spoken or written, is not impaired. In addition, her blood pressure is high (148/and a serum lipid profile that was ordered when she first arrived at the hospital has come back with a high LDL and total cholesterol level. Based on this case answer the following questions: a)What is a stroke? b)Describe the mechanisms by which strokes can occur. c)List the risk factors that predispose an individual to suffer a stroke. d)List at least three classical signs of stroke e)What type of aphasia does Liz display? Explain how you came to this conclusion. f)Based on the historical and physical exam findings, what is the possible cause for Liz's stroke and what specific areas of the brain have been damaged as a result of her stroke?

The facilitated diffusion of molecules across the blood- brain barrier relies on protein carriers that are specific for the movement of particular molecules.

What area of the brain is often referred to as the "primitive brain" due to its association with very basic human drives such as aggression, fear, and the sense of smell?

Where in the cerebral cortex does visual perception occur?

The lobe contains the primary motor cortex, which initiates movement.

Which statement best describes why nicotine should be avoided before going to bed?

Which of the following protects the soft tissues of the brain?

What symptom of stroke distinguishes it from other neurological disorders?

Broca's and Wernicke's areas process sign language as well as spoken language.

A new mother is visiting the pediatrician because her baby is sleeping up to 17 hours a day. She jokes with the doctor that her husband, who is quite older than she, sleeps only 5 hours a day and seems fully rested. Which of the following would be the most likely response from the physician?

The ability of the nervous system to alter its anatomy and function in response to changes in its activity pattern is called

The development of the cerebral cortex is what appears to set humans apart from other species. Identify the structures and general functions of the cortex.

The hypothalamus is the major link between the endocrine system and the nervous system.

Movement of the right side of the body is controlled by the right side of the cerebral cortex.

Multiple sclerosis is an autoimmune disease, meaning the body attacks itself.

Which area of the brain relays sensory information to the cerebral cortex?

You go to the library to study for an exam only to find that parts of the library are being remodeled, creating many distracting noises. However, you decide to stay and complete your studies at the library because you have recently learned about , or a decrease in response to a repeated stimulus, such as the noises coming from the remodeling process.