Presentation is loading. Please wait.

Presentation is loading. Please wait.

Human Anatomy, Frolich, Head II: Throat/Larynx HEAD/NECK II: Throat/ Pharynx Overview: Sagittal view of nose/mouth/throat Nasal Cavity and Breathing Mouth.

Similar presentations


Presentation on theme: "Human Anatomy, Frolich, Head II: Throat/Larynx HEAD/NECK II: Throat/ Pharynx Overview: Sagittal view of nose/mouth/throat Nasal Cavity and Breathing Mouth."— Presentation transcript:

1 Human Anatomy, Frolich, Head II: Throat/Larynx HEAD/NECK II: Throat/ Pharynx Overview: Sagittal view of nose/mouth/throat Nasal Cavity and Breathing Mouth and Chewing Throat and Swallowing Larynx and Singing

2 Human Anatomy, Frolich, Head II: Throat/Larynx Sagittal Section Head Cranial cavity Brain/Spinal cord Vertebral bodies Epaxial muscles Hard/soft palate Oral cavity Esophagus Trachea Epiglottis Naso- Oro- Laringo- pharynx

3 Human Anatomy, Frolich, Head II: Throat/Larynx Nose/Nasal Cavity and Breathing Function: Inlet for air to lung Warm/filter air (mucous membranes on ethmoid conchae) Smell (nerve endings on nasal membranes) M&M, Fig. 21.1

4 Human Anatomy, Frolich, Head II: Throat/Larynx Conchae of Ethmod Bone Scroll-like bones Covered in mucous membrane for –Smell –Filter air –Warm air M&M, Fig. 7.10

5 Human Anatomy, Frolich, Head II: Throat/Larynx Sinuses All connected to nasal cavity All lined with mucous membranes Cold/allergiesfill with mucous=sinus headache Maxillary Ethmoid Frontal Sphenoid M&M, Fig. 7.11

6 Human Anatomy, Frolich, Head II: Throat/Larynx Mouth/Oral Cavity and Chewing COMPONENTS Lips Cheeks Palate Jaws and teeth Salivary glands FUNCTION Bite and chew food Form words Taste Kiss Vestibulein front of teeth Oral cavity properbehind teeth Lined by thick stratified squamous epithelium (almost no keratin)

7 Human Anatomy, Frolich, Head II: Throat/Larynx Lips FUNCTION Close mouth Keep food in Make speech sounds Tactile STRUCTURE Core of sphinchter-shape skeletal muscle (orbicularis oris) Red margin transition from keratinized skin to oral mucosa –Red because clear color lets underlying vessels show through –No sweat or sebaceous glands, thus needs to be wet (or lip balm) M&M, Fig. 11.6

8 Human Anatomy, Frolich, Head II: Throat/Larynx Cheeks FUNCTION Form side of moth STRUCTURE Buccinator muscle instrumental in swallowing, connects back to pharyngeal constrictors M&M, Fig. 11.6

9 Human Anatomy, Frolich, Head II: Throat/Larynx Palate Hard palate anterior –Maxilla –Palatine Soft palate is posterior extension, soft tissue Palatoglossal arch (palate to tongue) Palatopharyngeal arch (palate to pharynx) Tonsils between arches Uvula…??? M&M, Fig. 22.7

10 Human Anatomy, Frolich, Head II: Throat/Larynx Jaws FUNCTION Hold teeth Occlude in chewing STRUCTURE Upper jawmaxillary bone Lower jaw--mandible M&M, Fig. 7.3

11 Human Anatomy, Frolich, Head II: Throat/Larynx Teeth Deciduous teethmilk or baby teeth Emerge 6 mos. – 2 yrs. Replaced by permanent teeth 6-12 yrs. Wisdom teeth (3 rd molar) erupts yrs or remains in jaw Key to healthy teeth and gums: Flossing Visiting dentist regularly (every 6 mos.) and starting at young age (3-4 yrs.)

12 Human Anatomy, Frolich, Head II: Throat/Larynx Structure of individual toothits alive!!

13 Human Anatomy, Frolich, Head II: Throat/Larynx Jaw muscles Masseter, temporalis elevate mandible (close jaw) Medial pterygoidlateral (side-to-side) chewing Lateral pterygoid translates mandible anteriorly (part of opening) Digastric (not shown) depresses mandible (opens jaw) Chewing is circular motion M&M, Fig. 11.7

14 Human Anatomy, Frolich, Head II: Throat/Larynx Tongue FUNCTION Position food between teeth Form words in speech STRUCTURE Intrinsic muscles (allow for shape change with fibers in various directions) Extrinsic muscles attach tongue to skeleton –Genioglossus –hyoglossus M&M, Fig. 22.7

15 Human Anatomy, Frolich, Head II: Throat/Larynx Salivary glands Intrinsicall over mucous membranes of tongue, palate, lips, lining of cheek Extrinsicsecrete more saliva when eating (or anticipating) –Parotid –Submandibular –sublingual M&M, Fig

16 Human Anatomy, Frolich, Head II: Throat/Larynx Saliva Moistens mouth Dissolves food to be tasted Wets and binds food Contains amylase to start starch digestion (saltine to sugar experiment) Contains bicarbonate to neutralize cavity- causing acids produced by bacteria Contains anti-bacterial and anti-viral enzymes and cyanide-like compound to kill harmful micro-organisms Contains proteins that stimulate growth of beneficial bacteria in the mouth

17 Human Anatomy, Frolich, Head II: Throat/Larynx Throat/Pharynx and Swallowing Back of mouth to larynx Food and air mix and cross When it goes wrongchoking!! Food PHARYNX Air Trachea Esophagus STRUCTURES Entrypharyngeal arches Exitglottis (epiglottis is lid) Pharyngeal constrictors squeeze food through

18 Human Anatomy, Frolich, Head II: Throat/Larynx Pharynx and Swallowing Focus on muscles and arrangement of mouth cavity, pharynx, larynx, epiglottis, trachea Pharynx/Swallowing in detail!!

19 Human Anatomy, Frolich, Head II: Throat/Larynx Descent of the larynx

20 Human Anatomy, Frolich, Head II: Throat/Larynx Larynx and Singing FUNCTION Channel air out of trachea Vibrate to produce sound for speech/song STRUCTURES External skeleton or frame (cartilage) Internal vocal cords and associated muscles

21 Human Anatomy, Frolich, Head II: Throat/Larynx Skeleton of larynx Cricothyroid ligament is usual site of emergency tracheotomy (feel on selfSURFACE ANATOMY) M&M, Fig. 21.5

22 Human Anatomy, Frolich, Head II: Throat/Larynx Vocal cords M&M, Fig. 21.6

23 Human Anatomy, Frolich, Head II: Throat/Larynx COMING SOON!! Head/Neck III: Special Senses Head/Neck IV: Cranial Nerves


Download ppt "Human Anatomy, Frolich, Head II: Throat/Larynx HEAD/NECK II: Throat/ Pharynx Overview: Sagittal view of nose/mouth/throat Nasal Cavity and Breathing Mouth."

Similar presentations


Ads by Google