Review Sheet: Chapter 10 Touch, Taste, and Smell

1) Identify the type of receptor being triggered.

A. Stepping on a nail.

Pain Receptors

B. Grabbing a cold soda.

Thermoreceptors

C. Squinting from the glare of the sun.

Photoreceptors

D. Sucking on the lollipop.

Chemoreceptors

E. Squeezing into a pair of jeans.

Mechanoreceptors

2) What is the difference between sensation and projection?

Sensation depends on the portion of the brain that depends on the sensory impulses. Projection are caused by the cerebral cortex and is a feeling that comes from stimulated receptors.

3) Identify the type of touch and pressure receptor being described?

A. Located in hairless portions of the skin.

Meissner Corpuscles

B. Located in epithelial tissue.

Sensory Nerve Fiber

C. Associated with deep pressure.

Pacinian Corpuscles

4) What type of receptor is activated at very high or low temperature?

Pain receptors are stimulated at very high or very low temperatures.

5) What is the difference between acute and chronic pain fibers?

Acute pain fibers are thin and myelinated. It produces sharp pain. Chronic pain fibers are thin and unmyelinated. It produces dull pain.

6) What is referred pain?

Referred pain is the pain coming from another body part that is not damaged by structure.

7) How do the roles of the thalamus and cerebral cortex differ in pain regulation?

The thalamus detects pain awareness. The cerebral cortex determines pain intensity, source, and response.

8) What gets produced in response to pain regulation?

Impulses are sent to nerve fibers to release biochemical that block pain. Pain inhibitors like endorphins, serotonin, and enkephine.

9) What is meant by “adaptable” when referring to receptors?

Adaptable is referring to the receptors ability to no longer be able to be stimulated by stimulus.

10) What type of receptors are olfactory receptors?

Chemoreceptors

11) In order:

Nasal Cavity, Olfactory Receptors, Cribiform palate, Olfactory Bulb, Olfactory Nerve Tract, Temporal Lobe

12) What must happen in the Nasal cavity for an odor to be detected?

Odorant molecules must enter the Nasal cavity as a gas.

13) What is the name for the mass neurons that detect smell?

Olfactory bulb.

14) What structures are located within the taste bud?

Tongue, Roof of mouth, and walls of throat.

15) What structures of the taste bud acts as the receptor?

16) What are the four types of taste sensations?

17) What is flavor?

18) Why is flavor considered to be multi-sensory?

19) Which lobe of the brain identifies different tastes?

20) Why is it impossible to taste food with a dry tongue?

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