1. The Nervous System

2. Functions of the Nervous System the center of all thought, learning and memory

3. Functions of the Nervous System the center of all thought, learning and memory regulates and maintains homeostasis (a state of balance) examples: body temperature, heart rate, respiration, digestion examples: body temperature, heart rate, respiration, digestion

4. Functions of the Nervous System the center of all thought, learning and memory regulates and maintains homeostasis (a state of balance) examples: body examples: body temperature, heart rate, respiration, digestion keeps us in touch with our internal and external environment

5. Two Divisions of the Nervous System Central Nervous System- brain and spinal cord

6. Two Divisions of the Nervous System Central Nervous System- brain and spinal cord Three Main Parts of Brain: Three Main Parts of Brain: Cerebrum- Cerebrum- interprets input from senses and controls voluntary muscles

7. Two Divisions of the Nervous System Central Nervous System- brain and spinal cord Three Main Parts of Brain: Three Main Parts of Brain: Cerebrum- interprets Cerebrum- interprets input from senses and controls voluntary muscles Cerebellum- coordinates Cerebellum- coordinates actions of muscles and helps keep your balance

8. Two Divisions of the Nervous System Central Nervous System- brain and spinal cord Three Main Parts of Brain: Three Main Parts of Brain: Cerebrum- interprets Cerebrum- interprets input from senses and controls voluntary muscles Cerebellum- coordinates Cerebellum- coordinates actions of muscles and helps keep your balance Brainstem- controls Brainstem- controls homeostasis and coordinates involuntary muscles

9. What is this part of the brain called? 12345 1.Cerebrum 2.Cerebellum 3.Brain stem 4.Spinal cord

10. What is the function of the brain stem? 12345 1.Controls homeostasis & voluntary muscles 2.Controls senses & voluntary muscles 3.Controls balance & coordinates muscles 4.Controls homeostasis & involuntary muscles

11. When you feel hungry, what function is your nervous system trying to carry out? 12345 1.Maintaining homeostasis 2.Moving your body 3.Sensing your environment 4.Keeping your balance

12. Two Divisions of the Nervous System Peripheral Nervous System- connects the Central Nervous System to the rest of the body

13. Two Divisions of the Nervous System Peripheral Nervous System- connects the Central Nervous System to the rest of the body Two Groups: Somatic nervous system- Somatic nervous system- controls voluntary actions and input from senses (sound, sight, touch, etc.)

14. Two Divisions of the Nervous System Peripheral Nervous System- connects the Central Nervous System to the rest of the body Two Groups: Somatic nervous system- Somatic nervous system- controls voluntary actions and input from senses (sound, sight, touch, etc.) Autonomic nervous system- Autonomic nervous system- controls homeostasis by regulating the heart, breathing, and digestion without conscious thought

15. Which division of the nervous system is made up of the brain & spinal cord? 12345 1.Autonomic nervous system 2.Somatic nervous system 3.Central nervous system 4.Peripheral nervous system

16. Which part of the Peripheral Nervous System controls processes that maintain homeostasis without you even thinking about it? 12345 1.Autonomic nervous system 2.Somatic nervous system 3.Central nervous system 4.Peripheral nervous system

17. Nerve cells are called neurons Impulse- a message carried by a neuron

18. Nerve cells are called neurons Impulse- a message carried by a neuron Synapse- the small space that an impulse jumps between neurons

19. Types of Neurons Sensory neurons: in the skin, muscles, joints, and organs that can sense pressure, temperature, and pain Sensory neurons: in the skin, muscles, joints, and organs that can sense pressure, temperature, and pain

20. Types of Neurons Sensory neurons: in the skin, muscles, joints, and organs that can sense pressure, temperature, and pain Sensory neurons: in the skin, muscles, joints, and organs that can sense pressure, temperature, and pain neurons in nose & tongue sense tastes and smells neurons in nose & tongue sense tastes and smells neurons in inner ear neurons in inner ear sense sounds rods and cones in eye rods and cones in eye sense sight

21. Types of Neurons Motor neurons: stimulate muscle cells throughout the body

22. Types of Neurons Motor neurons: stimulate muscle cells throughout the body includes muscles of the heart, diaphragm, intestines, and bladder includes muscles of the heart, diaphragm, intestines, and bladder

23. What is an impulse? 12345 1.A nerve cell 2.A message carried by neurons 3.The space between two neurons 4.A reflex

24. What is this structure called? 12345 1.Axon 2.Synaptic terminal 3.Nucleus 4.Dendrite

25. What does a motor neuron stimulate? 12345 1.Brain cells 2.Sensory organs 3.Muscle cells 4.Sensory neurons

26. Types of Neurons Interneurons: connect other neurons

27. Types of Neurons Interneurons: connect other neurons all neurons in the central nervous system (brain, spinal cord) are interneurons all neurons in the central nervous system (brain, spinal cord) are interneurons

28. Reflex Reflex- an involuntary response to a stimulus (change in environment) that allows the body to respond quickly without thinking about it.

29. What is a change in the environment that your body responds to called? 12345 1.Stimulus 2.Response 3.Reflex 4.Sense

30. Which is not true about a reflex? 12345 1.It is a quick response. 2.It is voluntary. 3.It does not require conscious thought. 4.It is a response to an external stimulus.