IB Biology: C3.1 The Brain and Information Processing

Front

What is the primary role of the brain in the body?

Back

The brain serves as the most important information processing organ of the body, acting as the central information integration organ.

Front

How does the brain receive information?

Back

The brain receives information from sensory receptors in specialized organs.

Front

What is the function of sensory receptors?

Back

Sensory receptors detect stimuli and generate impulses.

Front

What does information processing in the brain involve?

Back

It involves filtering important sensory information from unimportant ones.

Front

How does the brain communicate with body organs?

Back

Through spinal nerves and cranial nerves.

Front

How many pairs of spinal nerves are there?

Back

There are 31 pairs of spinal nerves.

Front

How many pairs of cranial nerves are there?

Back

There are 12 pairs of cranial nerves.

Front

Where are photoreceptors located and what is their function?

Back

Photoreceptors are located in the retina of the eyes and detect visual information or the stimulus of light.

Front

Where are chemoreceptors located and what is their function?

Back

Chemoreceptors are located within the tongue and detect chemicals.

Front

Where are thermoreceptors located and what is their function?

Back

Thermoreceptors are located in the skin and detect temperature changes.