Ch12 Dr Mon

Front

What happens to the parietal lobe when a finger is lost?

Back

The region of the parietal lobe receiving information from that finger would decrease in size.

Front

What is a receptive field?

Back

A receptive field is the surface area in which a mechanoreceptor senses a disturbance.

Front

Describe the pathway for pain information to the brain.

Back

receptor cell → interneuron (spinal cord) → lateral spinothalamic tract → thalamus → primary sensory cortex

Front

Define a sensory unit.

Back

One afferent neuron and all its receptors.

Front

What is the adaptation rate of free nerve endings?

Back

Slow to rapid adaption rate.

Front

What is the role of the thalamus in sensory processing?

Back

The thalamus acts as a relay station for sensory information before it reaches the primary sensory cortex.

Front

What type of receptors are mechanoreceptors?

Back

Mechanoreceptors are sensory receptors that respond to mechanical pressure or distortion.

Front

How do rapidly adapting receptors function?

Back

Rapidly adapting receptors respond quickly to changes in stimulus but stop firing if the stimulus remains constant.

Front

What is the function of the primary sensory cortex?

Back

The primary sensory cortex processes sensory information from the body and is involved in perception.

Front

What is the difference between slowly adapting and rapidly adapting receptors?

Back

Slowly adapting receptors continue to respond to a constant stimulus, while rapidly adapting receptors respond only to changes.