Exam 10: Sensory Physiology

Why do objects viewed underwater with a mask appear closer and larger than they really are?

Explain how sensory coding and processing allow the central nervous system to communicate information on the four properties of a stimulus.

Match the type of receptor with the appropriate description. -These are probably the oldest sensory receptors as evidenced by their existence in primitive animals that do not have formalized nervous systems.

Create a concept map explaining the basic structure and function of sensory systems, starting with a receptor cell and ending with the primary sensory cortex.Be sure to include the general properties such as receptive fields, stimulus location, and so on.Consider each sensory system in turn and identify exceptions to your basic map, indicating how they are different.

The tactile receptor whose nerve endings are surrounded by concentric connective tissue layers is the

Discuss the gate control theory of pain modulation.

Describe pitch and loudness and how these properties of sound are processed by the cochlea.

Match the ganglion cell response to the location of the light stimulus. -Light only shines on the center of an on-center visual field.

Movement of the cupula in the ampullae of the semicircular canals allows detection of

Which of the following is NOT a somatosensory modality?

The highest frequency sound is detected by

Explain how vision is affected by the loss of one eye.Explain how hearing is affected by the loss of one ear.In reality, how disadvantaged are people who are blind in one eye or deaf in one ear? Would loss of half the tongue or half the olfactory epithelium have comparable effects on those systems? Explain.

Briefly describe the difference between tonic and phasic receptors, and illustrate this difference by sketching graphs showing any type of stimulus (as a rectangular wave), the receptor potentials generated by each type of receptor, and the resulting action potentials in the neurons that respond to each type of receptor.You do not need to put numbers on your axes; rather you are to demonstrate you understand the relative differences in the responses.

If the sodium pump in the membranes of the photoreceptors were completely blocked, the result would be

You work in a paper mill.The smell is horrible every day when you get to work, but by the end of the day, you hardly notice it.Why?

Visceral pain is poorly localized and can be perceived to originate from a region of the body that is different from it's actual location; this is called

________ are raised sensory structures within the ampulla of semicircular canals that contain the hair cells.

An area of the retina that contains only cones and is the site of sharpest vision is the

List and describe the two types of retinal bipolar cells and how they respond differently to the same neurotransmitter.

The vitreous chamber of the eye