IB Biology: C3.1 Sensory Neurons and Information Transfer

Front

What is the role of receptors in the nervous system?

Back

Receptors are capable of transduction, converting physical stimuli into electrical signals or action potentials.

Front

What is transduction in the context of neural pathways?

Back

Transduction is the conversion of physical stimuli into electrical signals or action potentials by receptors.

Front

How are receptors specialized in the nervous system?

Back

Each type of receptor is specialized for transducing one specific type of physical stimulus.

Front

What happens to signals from receptors and nerve endings?

Back

Signals are passed to sensory neurons, which carry the impulses to the central nervous system.

Front

How do the axons of sensory neurons vary?

Back

The axons vary in length depending on the distance between the receptor cell and the brain or spinal cord.

Front

Where does the brain receive signals from?

Back

The brain receives signals from the main sense organs located in the head.

Front

Where does the spinal cord receive signals from?

Back

The spinal cord receives signals from other organs of the body such as the skin and muscles.

Front

How do sensory neurons enter the spinal cord or brain?

Back

Sensory neurons enter the spinal cord through one of the 31 pairs of spinal nerves or the brain by one of the 12 pairs of cranial nerves.