Question

nervous system
1 name the main parts of the nervous system
a.
b.
c.
2 what function does the brain perform in our nervous system?

3 the brain and spinal cord are very delicate organs. each is housed in areas which give them special protection. the brain is protected by the
and the spinal cord is protected by the
4 some responses to our environment are controlled by our brain and are called voluntary. other responses are involuntary and are performed without our brain becoming involved in the decision. put a v on the line in front of the voluntary responses. put an i on the lines in front of the involuntary responses listed below.
breathing
singing
talking
reading
swimming
heart beating
blood circulation
pronouncing a recognized word
pulling finger out of a fire
digesting food
5 why does brain damage due to injuries, diseases, or birth defects have such a serious consequence on our lives?

6 a nerve cell is called a
7 the
is the largest part of your brain and makes up about 85% of the brains weight. it regulates posture, balance and movement and controls actions guided by your own will.
8 the
coordinates movements and helps muscles work together.
9 the
regulates the involuntary action of the lungs, heartbeat, digestion, and secretions of glands.
10 some
actions are an automatic response to a stimulus.

Explanation:

1. The main parts of the nervous system are the brain, spinal - cord, and nerves.
2. The brain controls and coordinates all body functions, processes sensory information, and enables thought, memory, and emotion.
3. The brain is protected by the skull and the spinal cord is protected by the vertebral column.
4. Voluntary responses are those we consciously control (talking, singing, reading, swimming, pronouncing a recognized word, pulling finger out of a fire). Involuntary responses happen without conscious control (breathing, heart - beating, blood circulation, digesting food).
5. Brain damage has serious consequences because the brain controls all body functions and is crucial for cognitive, sensory, and motor abilities.
6. A nerve cell is called a neuron.
7. The cerebrum is the largest part of the brain and makes up about 85% of the brain's weight. It regulates posture, balance, and movement and controls actions guided by your own will.
8. The cerebellum coordinates movements and helps muscles work together.
9. The medulla oblongata regulates the involuntary action of the lungs, heartbeat, digestion, and secretions of glands.
10. Reflex actions are an automatic response to a stimulus.

Answer:

1. Brain, Spinal - cord, Nerves
2. Controls and coordinates body functions, processes sensory information, enables thought, memory, and emotion
3. Skull, Vertebral column
4. I - breathing, I - heart - beating, I - blood circulation, I - digesting food; V - talking, V - singing, V - reading, V - swimming, V - pronouncing a recognized word, V - pulling finger out of a fire
5. Because the brain controls all body functions and is crucial for cognitive, sensory, and motor abilities
6. Neuron
7. Cerebrum
8. Cerebellum
9. Medulla oblongata
10. Reflex