Upper GI tract Flashcards
what are the 4 pairs of extrinsic muscles of the tongue
- palatoglossus
- styloglossus
- hyoglossus
- genioglossus
what nerve innervates the extrinsic muscles of the tongue
hypoglossal nerve
name the 4 intrinsic muscles of the tongue
- superior longitudinal muscles
- inferior longitudinal muscles
- vertical lingual muscle
- transverse lingual muscle
what nerve innervates the intrinsic muscles of the tongue
hypoglossal nerve
pharynx has which 3 regions
- nasopharynx
- oropharynx
- laryngopharynx
what is oropharyngeal isthmus?
when you open the mouth then the back and dark area of the throat
function of the salivary glands
produce saliva
important of saliva
lubrication
protecting your teeth against bacteria
aids digestion
what are the 3 pairs of major salivary glands
Parotid
submandibular
sublingual
how do parotid gland secretes saliva?
through parotid duct in the mouth
how do the submandibular gland secretes saliva
through submandibular duct into the oral cavity
where does the sublingual gland located?
in the floor of mouth in the sublingual fold
4 major muscles of mastication
masseter muscle
temporalis muscle
medial pterygoid muscle
lateral pterygoid muscle
function of the temporalis
closing both the mouth and retraction
Function of the masseter
Action of mastication (chewing)
Function of medial pterygoid
produce elevation and protrusion of mandible
function of lateral pterygoid
aid in chewing and biting by controlling the movement of mandible
what are the 3 branches of the trigeminal nerve?
- Ophthalmic
- Maxillary
- Mandbular
3 main branches of the coeliac trunk
the splenic
the hepatic
the left gastric artery
name the 4 part of duodenum and their sizes
1st - superior part (2inch)
2nd - descending part (3 inch)
3rd - horizontal part (4 inch)
4th - ascending part (1 inch)
where are the major and minor duodenal papillae are located and what are they opening for?
- located in the descending part
- where pancreatic juice goes into duodenum from pancreatic
