General

List

Title

Articulation-Tongue

Writer

Acuworld

View

648

Date

2020-07-15 09:09:11

<H1><SPAN style="FONT-WEIGHT: bold">Articulation:Tongue</SPAN></H1>
<P>The tongue is the most important articulator of speech. This muscle is extremely strong, as it must move food around in our mouths as we chew. Its other biological function is to push the food into a <SPAN style="FONT-STYLE: italic">bolus</SPAN> (I prefer the less scientific term "glob"), and then push it down the oesophagus to our stomach. Try swallowing to feel the strength of your tongue pushing down and back. Speech, on the other hand, requires a very different approach. For the sound to resonate effectively, the less tongue root tension (i.e. tension in the <SPAN style="FONT-STYLE: italic">extrinsic</SPAN> muscles of the tongue), the better. For speech you want to relax the tongue up and forward, the opposite of swallowing. The quick movements of the tongue, necessary for rapid delivery of tongue twisters for example, require very delicate control of the action of the tongue. This control is often best regulated in concert with the ear, listening to the sounds created by the voice when the tongue is in one position over another. Sensitivity is the key to learning to appreciate the range of capabilities the tongue possesses.</P>
<H5><SPAN style="FONT-WEIGHT: bold">Landmarks:</SPAN> </H5>
<UL>
<LI>
<P>Tip, front edge, blade, middle, back of tongue </P>
<LI>
<P>Median fibrous septum </P>
<LI>Eight muscles of the tongue, divided into intrinsic & extrinsic muscles </LI></UL>
<P><SPAN style="COLOR: #339933">Tip: </SPAN></P>
<UL>
<LI>the very point of tongue </LI></UL>
<P><SPAN style="COLOR: #339933">Front edge: </SPAN></P>
<UL>
<LI>awareness is essential for delicate control of alveolar plosives, such as /t, d/ </LI></UL>
<P><SPAN style="COLOR: #339933">Blade: </SPAN></P>
<UL>
<LI>that part that is free to flap up and down, the front third </LI></UL>
<P><SPAN style="COLOR: #339933">Middle: </SPAN></P>
<UL>
<LI>just behind the blade </LI></UL>
<P><SPAN style="COLOR: #339933">Back: </SPAN></P>
<P>the surface of the tongue begins to change here; awareness is important for certain back vowels </P>
<P><SPAN style="COLOR: #339933">Median Fibrous Septum:</SPAN> <SPAN style="COLOR: #ffffff">Medianibrous Septum: </SPAN></P>
<UL>
<LI>a divider that runs down the centre of the tongue serves as an attachment for the transverse muscles. </LI></UL>
<P></P>
<P><SPAN style="FONT-WEIGHT: bold"><A name=intrinsic>Intrinsic Muscles of the Tongue:</A></SPAN></P>
<DIV><BR><IMG alt="" src="/Image/upload/tongxsec.jpg" border=0><A href="http://www.yorku.ca/earmstro/journey/images/tongxsec.jpg" target=Anatomy></A></DIV>
<DIV>The image at left features the important muscles of the body of the tongue. The transverse muscle fibers are hard to see because they can only be seen in cross-section as little dots running under the longitudinal muscles. Also visible in this image is the <SPAN style="FONT-STYLE: italic">genioglossus</SPAN>, which joins the tongue to the chin and the <SPAN style="FONT-STYLE: italic">geniohyoid</SPAN>, which joins the chin and hyoid bone. </DIV>
<DL>
<DT>  
<DD>  
<DT>  </DT></DL>
<P><SPAN style="COLOR: #339933">Inferior and Superior Longitudinal Muscle:</SPAN></P>
<UL>
<LI>go the length of the tongue 
<LI>moves tip up and down </LI></UL>
<P><SPAN style="COLOR: #339933">Transverse Muscle:</SPAN> </P>
<UL>
<LI>go across the tongue 
<LI>narrows and lengthens the tongue </LI></UL>
<P><SPAN style="COLOR: #339933">Vertical Muscle: </SPAN></P>
<UL>
<LI>go up and down in the tongue 
<LI>flattens and depresses the tongue </LI></UL>
<P></P>
<P><SPAN style="FONT-WEIGHT: bold"><A name=extrinsic>Extrinsic Muscles:</A></SPAN></P>
<DIV><BR><IMG alt="" src="/Image/upload/tongext.gif" border=0><A href="http://www.yorku.ca/earmstro/journey/images/tongext.gif" target=Anatomy></A></DIV>
<DIV>This side view of the extrinsic muscles gives and excellent idea of how big the "roots" of our tongues are. You can feel these muscles by pressing a fingertip under your chin, up towards the tongue. Those muscles should be soft and gooey, especially during phonation.<BR clear=all></DIV>
<P><SPAN style="COLOR: #339933">Genioglossus:</SPAN> chin to tongue </P>
<UL>
<LI>sticks out the tongue 
<LI>presses against the teeth or alveolar ridge 
<LI>pulls the tongue tip back 
<LI>troughs the tongue </LI></UL>
<P><SPAN style="COLOR: #339933">Styloglossus:</SPAN> styloid process behind ear to tongue </P>
<UL>
<LI>pulls the tongue upward and back </LI></UL>
<P><SPAN style="COLOR: #339933">Palatoglossus:</SPAN> palate to tongue </P>
<UL>
<LI>pulls the tongue back to grove the tongue </LI></UL>
<P><SPAN style="COLOR: #339933">Hyoglossus:</SPAN>hyoid bone to tongue </P>
<UL>
<LI>retracts or depresses the tongue 
<LI>
<DIV>elevates the hyoid bone </DIV></LI></UL>
<DIV> </DIV>
<DIV>Reference: <A href="http://www.yorku.ca">www.yorku.ca</A></DIV>