Skip to main content

Digestive system ( teeth ) Anatomy

 NOTES NURSING & MEDICAL STUDENTS Notes for medical student and nursing student

  •  Teeth

      Introduction:-

         -teeth play an important role in eating ,chewing and nutrition.

         -they are different shapes and sizes to bite,tear, crush or grind

          before it is swallowed.

          -the teeth are the hardest subtances in the human body.

     definition:-

                                            "teeth are hard ,mineral -rich structure which are 
         used to chew food. they are not made of bone like the rest of the skeleton,
         but have  their unique structure to enable them to break down food"
         


                                "teeth are part of your digestive system .they break
         down foods by crushing or cutting them before you swollow.
                                       










         part of tooth:-


             1) Enamel :-  enamel is the visible subtance that cover the tooth crow.
                                  -harder than bone, ensmel protect the tooth from decay .
                                 - enamel is made up of phospharous and calcium .
            
            2) dentin :-  underneath the enamel you find dentin, which isbcalcified
                                and looks bone .
                              -  dentin is not quite as hard as enamel ,so it is at greter risk 
                                 for decay should the enamel wear away.

           3) cementum:-  this tissue cover the tooth root and helps anchor itin to
                                    the bone .
            
           4) pulp  :-pulp is found at the center of your tooth and cotains the blood 
                           vesseis .
                         - never and others soft tiisues that deliver nutrition and singles
                         to your teeth.
                  

    *  type of tooth :- 

       1) Incisors :-- cut the food .
       
        2) canines :- tear the food .
      
       3) molars :- crush and grind the food . 

         

          function of teeth:--
      1) mastication :- normal tooth form and proper alignment ensure 
                                       efficiently of mastication.

            2)Esthetics :-  form  and alignment of anterior teeth physical apperance.

            3) speech :-   form and alignment of anterior and posterior teeth assist it
                                 articulation of certain sounds
.
            4) protection of supporting tissues:-- form and alignment of teeth assist in 
                                  sustaining the teeth in dental arches.
     
                               
                                                                  
         

Comments

Post a Comment

Popular posts from this blog

Anatomy of pancreas (digestive system organ )

NOTES NURSING & MEDICAL STUDENTS Notes for medical student and nursing student   PANCREAS :- introduction :-  -it is capital J shaped structure it is a pale gary gland veing about 60 gram . - it is 50 to 20 cm long . - it situated in epigastric and left hypocondriac rigion . - it is a gland  that is partly secrete pancreas acidic juice . - endocrine part of pancreas hormone that is insulene .                                       External features of pancreas :-  1 ) head of pancreas  2) neck of pancreas  3) body of pancreas  4) tail of pancreas  5) duct of pancreas  1) head of pancreas :- -the head is enlarged and lies within the C shaped curve of bed . 2) neak of pancreas :-  -it is slightly constricted past which is presend between head and body of pancreas . - it is directed forward & backward  it consist two surfaces :- a) an...
Post a Comment
Read more

Anatomy for cell in human body cell

  NOTES NURSING & MEDICAL STUDENTS Notes for medical student and nursing student C ell:- -all living things are composed of cell . -a single cell is a smallest unit that has the characteristics of the life . -cell is the basic structure  & functional unit of the body .                                          structure of cell :- -the cell is made up of three main part's :- 1) cell membrane  2) cytoplasm  3) nucleus  cell membrane :- -cell membrane is a protective sheet that enveloping the cell body it is aslo known  as plasa membrane or plasamalema . - it is made up by double leyar of phospholipids which is having a molecules of sugar and protein. -this membrane seprate the fluid outside of the cell fluid ( ECF)  and fluid present inside the the cell called as intra cellular fluid ( ICF )  - this membrane is semipermeable membrane so t...
Post a Comment
Read more

Anatomy of liver ... ( digestive system)

  NOTES NURSING & MEDICAL STUDENTS Notes for medical student and nursing student Liver :- introduction ;- -liver is largest organ of abdominal organ. -the liver is a huge glondular organ belonging to the GI system. -it is largest gland in the body  -receives blood 25% of cardiac output. -in the late fetus in which it also serves as a hematopoietic organ. anatomic and nonanatomic factors :-    1) anatomic --     -inferior vena cava      -suprahepatic veins      -several ligaments such as the round ligament and coronary ligament.     -peritoneal folds        2) non-anatomic :-     -positive intraabdominal pressure                                                                             ...
Post a Comment
Read more