The Brain (1)

Sources: Encarta

1. <--Back
2. From: Family Health Book

From table of contents click on: Chapter 22 - the Brain and Nervous System

Click on: The Working of the System

Click on: Illustration: Nerve Cell

1. What is a neuron? __________________________

2. Draw a picture of two neurons and label axons, dendrites and the synapse.

3. Go Back to the text. In what form are signals received and transmitted

by the neurons? _______________________________________

About how many neurons are there in the brain? _____________

About how much does the brain weigh? ______________

Click on: Illustration: Brain

Draw the brain and label the four lobes of the cerebral cortex, the cerebellum and
the brainstem.

2. From: Encarta

Click on Find and type: Brain.

1. In the outline on the left double click on: Human Brain

What are the three major structural components of the brain? What is each
component responsible for?

a.

b.

c.

2. Double click on: Left and Right Brain Functions

1. What functions are common to both cerebral lobes?

 

2. What are some of the functions of the left brain?

 

 

3. What are some of the functions of the right brain?

3. Double click on: Structure of the Brain Stem

What functions are controlled by the brain stem?

4. Double click on: Functions of the Cerebral Cortex

In which lobe of the cortex is each of the following located? Look at the picture
and then go back to the text and read.

1. vision

c. hearing

d. reason

5. smell

f. speech

What is known about how cells store memory?

1. What substances do brain cells need to sustain their activity?

2. What is the ‘blood-brain barrier’? Why is it important?

3. a. What do neurotransmitters do?

2. How many neurotransmitters are in each neuron? ________
3. What three neurotransmitters (neurohormones) are mentioned?

 

4. How can an imbalance in neurotransmitter activity affect an individual?

4. How do tranquilizers work?

5. What name is given to people who do research on the brain?