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Parts and Functions of the Human Tongue

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Maria Eliza Renee Dominguez

on 4 December 2013

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Transcript of Parts and Functions of the Human Tongue

The Sense of Taste
Tongue's Anatomy
a human being has more than 10,000 taste buds They can be found both on and under the tongue, on the roof of the mouth and cheeks, and even on the lips!
Additional Information
The tether holding down the front of the tongue. This is a the thin membrane (layer of tissue) under your tongue and it connects your tongue to the bottom of your mouth.
Parts and Functions of the Human Tongue
How does taste work?
P.S: Alamin mo pano nagana. Di kain lang ng kain. :))
what are the papillae?
the small bumps that dot your tongue; located in the tongue mucosa(tissue) it is the goblet shaped bump where taste buds are contained.
When food met the tastebuds
The Tongue: it's a muscle!
5 main functions
1. To taste food
2. To keep food between the teeth during chewing.
3. To help swallowing
4. To help to clean the teeth.
5. To help speaking.
The tongue is a group of muscles. On its surface are very small nodules called PAPILLAE.
4 main types of Papillae:
1. The filiform papillae, or conical papillae, are the most numerous of the four main types of papillae, which are arranged in fairly regular rows running parallel to the central groove of the tongue.
2. The foliate papillae are clustered into two groups positioned on each side of the tongue.
3. The fungiform papillae are involved in the sensations of taste and have taste buds embedded in their surfaces. They respond to both sweet and sour tastes.
4. Every person has only 7 to 12 circumvallate papillae, yet these papillae each contain several thousand taste buds. Circumvallate papillae are round, raised, and visible to the naked eye. They are arranged in the shape of a V at the back of the tongue. These papillae are called circumvallate papillae, because they are surrounded by a trench containing many glands that “rinse” the taste-producing substances into the sensory cells.
Taste buds are collections of nerve-like cells that connect to nerves running into the brain. Taste buds are the true taste organ. They have numerous sensory cells that are in turn connected to many different nerve fibers.

Each taste bud has between 10 and 50 sensory cells. These cells form a capsule that is shaped like a flower bud or an orange. At the tip of this capsule there is a pore that works as a fluid-filled funnel. This funnel contains thin, finger-shaped sensory cell extensions, which are called taste hairs. Proteins on the surface bind chemicals to the cell for tasting.
This pore is basically an opening in the surrounding tongue tissue to allow exposure of the apical surfaces of the taste cells to the environment in order to receive their chemical stimulus.
This pore is basically an opening in the surrounding tongue tissue to allow exposure of the apical surfaces of the taste cells to the environment in order to receive their chemical stimulus.
Supporting cells - contain microvilli, appear to secrete substances into lumen of taste bud.
has peg-like extensions projecting into lumen. These contain the sites of sensory transduction.
triggers an impulse to the brain
The function of the hyoid is to provide an anchor point for the muscles of the tongue
It is a strong muscle that is covered by the lingual membrane and has special areas that detect the flavor of food. The tongue is made up of muscles covered by mucous membranes. These muscles are attached to the lower jaw and to the hyoid bone (a small, U-shaped bone, which lies deep in the muscles at the back of the tongue) above the larynx.
The glottis is the area of the larynx that holds the vocal cords. It also houses the vocal folds and the spaces between them. The glottis helps with the creation and development of human speech. The glottis' vocal folds create sound vibrations that make buzzing sounds. This process allows speech to occur
The Uvula is important in the articulation of the sound of the human voice to form the sounds of speech. It also works in tandem with the back of the throat, the palate, and air coming up from the lungs to create a number of guttural and other sounds.

*why cant we taste when we have colds?
* taste and flavor is different
*there's such a thing as a supertaster
*Taste buds are designed to keep us alive.
* Your taste bud's life cycle lasts for just 10 days

thank you for listening. now you know :)
Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes.
Salivary Glands
Salivary glands produce the saliva used to moisten your mouth, initiate digestion, and help protect your teeth from decay.
Gustatory Cortex
The term gustatory cortex refers to the areas of cerebral cortex involved functionally in taste perception. The location to which it is attributed varies by species, by method of detection, and by author.
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