1. What can you infer from the result? Choose the letter(s). a. The test substances can only be determined in their specific area according to the taste map of the tongue. b. The test substances can be determined anywhere in the tongue. c. The middle of the tongue cannot taste any of the substances. d. The salt solution is the only substances that could be determined in the middle of the tongue. e. Intensity of the taste of the substances are different form every area of the tongue.
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
![H. Taste Test
The picture on the left shows a map of the tongue where different types of
tastes can be identified. In this activity, you should be able to prove/disprove the
correctness of the map.
Dissolve a pinch of sugar in a teaspoon of distilled (drinking) water and place
in a small container. Do the same with a pinch of salt and baking soda and place
in a separate container. Using a dropper (or any stick-like material such as tooth-
pick, chop stick, spoon handle, barbeque stick and deep it in the solution) place a
drop on each of the area for the different types of taste and the middle of the tongue.
Always gargle with distilled water after every test. Fill-in the table with the data.
BITTER
SOUR I
SOUR
SALTY
SALTY
SWEET
Put a Check mark (V) on the location of the tongue where you were able to sense or taste the solutions.
Location on the Tongue
Test
Substance
Sugar
Solution
Salt Solution
Baking Soda
Sol'n
Sweet area
Salty Area
Sour Area
Bitter Area
Middle Tongue
Vinegar
1. What can you infer from the result? Choose the letter(s).
a. The test substances can only be determined in their specific area according to the taste map of the
tongue.
b. The test substances can be determined anywhere in the tongue.
c. The middle of the tongue cannot taste any of the substances.
d. The salt solution is the only substances that could be determined in the middle of the tongue.
e. Intensity of the taste of the substances are different form every area of the tongue.
2. Give a possible reason for your conclusion: Choose a letter. -
a. Specific taste buds are located in each area of the tongue thus, can only determine a specific taste.
b. The middle tongue contains taste buds which can only determine salty taste.
c. The taste buds can determine all taste, but are located in different areas and different quantities on the
tongue.
d. Taste buds contain gustatory cells specific for a certain taste.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa1aebf2c-d09a-4496-9e41-9d4e1081f655%2F2924ad83-49ee-485c-9fb1-399d023a01df%2F78eiotd_processed.jpeg&w=3840&q=75)
![](/static/compass_v2/shared-icons/check-mark.png)
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