Question

1. List and describe the parts of a neuron.

2. What do motor neurons do?

3. Define resting potential.

4. Name the organs of the central nervous system.

5. Which part of the brain controls conscious functions such as reasoning?

6. What are the roles of the brain stem?

7. Identify the two major divisions of the peripheral nervous system.

8. List five human senses.

9. What is a psychoactive drug? Give two examples.

10. Define drug abuse. When does drug addiction occur?

11. Identify three nervous system disorders.

12. Tony’s dad was in a car accident in which his neck was broken. He survived the injury but is now paralyzed from the neck down. Explain why.

13. Multiple sclerosis is a disease in which the myelin sheaths of neurons in the central nervous system break down. What symptoms might this cause? Why?

14. Explain how resting potential is maintained and how an action potential occurs.

15. Compare and contrast the somatic and autonomic nervous systems.

Answer 1

1. A neuron has three main parts: dendrites, an axon, and a cell body or soma
2. Motor neurons of the spinal cord are part of the central nervous system and connect to muscles, glands and organs throughout the body.
3. resting potential, the imbalance of electrical charge that exists between the interior of electrically excitable neurons (nerve cells) and their surroundings.
4. The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body.
5. The cerebral cortex
6. The brainstem has many basic functions, including regulation of heart rate, breathing, sleeping, and eating.
7. the somatic nervous system and the autonomic nervous system.
8. Sight, Sound, Touch, Taste, Smell, Introception, Body Awareness& Body Movements
9. alcohol, caffeine, nicotine, marijuana, and certain pain medicines... and most illegal drugs
10. Physical addiction appears to occur when repeated use of a drug changes the way your brain feels pleasure.
11. bells palsy, cerebal palsy & Parkisons disease
12. DO TWELVE
13. DO THIRTEEN
14. The negative resting membrane potential is created and maintained by increasing the concentration of cations outside the cell
15. The somatic nervous system transmits sensory and motor signals to and from the central nervous system. The autonomic nervous system controls the function of our organs and glands, and can be divided into the sympathetic and parasympathetic divisions.