BIO 261 – Week 7
Chapters 18-22 Assignment
Please answer these questions after reading the chapter(s). You will need to include the APA formatted citation for the textbook and/or any other references used. All answers should be in complete sentences and free of grammatical/spelling errors.
1. Describe the function of sodium and potassium in the generation of an action potential. (This question is worth 3 points total description, citation, & grammar/spelling.)
2. How does the myelin sheath affect the speed of an action potential? (This question is worth 3 points total description, citation, & grammar/spelling.)
3. What term refers to the membranous covering of the brain and cord? What three layers compose this covering? Which layer could be described as lacy? (This question is worth 7 points total naming, descriptions, citation, & grammar/spelling.)
4. Describe the structure and general functions of the spinal cord. (This question is worth 5 points total description, functions, citation, & grammar/spelling.)
5. List the major components of the brainstem and identify their general functions. (This question is worth 8 points total naming, functions, citation, & grammar/spelling.)
6. Describe the general functions of the cerebrum, cerebellum. (This question is worth 4 points total description, citation, & grammar/spelling.)
7. Define consciousness. Name the normal states, or levels, of consciousness. (This question is worth 5 points total definition, naming, citation, & grammar/spelling.)
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