Lecture 2 Flashcards
What part of enamel makes it so hard
Calcium salts
What cells make dentin
Odontoblasts
Odontoblasts make what
Dentin
Does enamel have collagen
no
Does cement have collagen
yes
Does dentin have collagen
yes
What are the three pairs of salivary glands
Parotid
Submandibular
Sublingual
What salivary glands are near your ear
Parotid
What salivary glands opens at base of lingual frenulum
Submandibular
What salivary glands are under the tongue
Sublingual
What are primary dentition
baby teeth
How many teeth do we have total
32
How many premolars and molars do we havw
2 premolars on each side/top and bottom
3 molars on each side/top and bottom
What covers the surface of the root
Cement
What does cement attach the tooth to
Periodontal ligament
Cement is composed of what
Calcified connective tissue
What types of cells line the pulp cavity
Odontoblasts
Enamel, dentin and cement resemble bone, but are _______
avascular
Pharyngeal constrictor muscles are associated with what organ
Pharynx
What type of epithelium is found in the pharynx
Stratified squamous
What is the muscle associated with the pharynx
Pharyngeal constrictor
Superior, middle and inferior
What is the name of where the esophagus pierces the diaphragm
Esophageal hiatus
What is the name of where the esophagus joins the stomach
Cardial orifice
What sphincter surrounds the cardial orifice
Gastroesophageal sphincter
What does the gastroesophageal sphincter rely on to work
The diaphragm
What sphincter does the diaphragm help close
Gastroesophageal
The layers of the esophagus are the same to the GI tract except for what
No serosa; they have adventitia
What kind of muscle is the muscularis externa of the esophagus composed of
Skeletal muscle for the first third
Smooth muscle for the rest
What are the four regions of the stomach
Cardia
Fundus
Body
Pyloric region
The pyloric region can be split into what 3 sub regions
Pyloric antrum
Pyloric canal
Pyloric sphincter
The oblique layer of the muscularis externa is only found where
The stomach
What is the name of the extra layer of muscularis externa found in the stomach
Oblique layer
What stomach cells produce an acidic mucin
Mucous neck cells
What stomach cells produce HCL and intrinsic factor
Parietal cells
What stomach cells produce pepsinogen
Chief cells
How does HCL and pepsinogen interact
HCL turns it into pepsin
What does pepsinogen need to be converted to pepsin
Hydrochloric acid
What is gastritis
Inflammation of the stomach
What are the three regions of the small intestine
Duodenum
Jejunum
Ileum
What is the most important/functional section of the SI
Duodenum
What is the shortest section of the SI
Duodenum
What section of the SI means “ empty”
Jejunum
What section of the SI means “twisted”
Ileum
What does the duodenum not have that the other SI sections do?
Mesentary
Where does the stomach have goblet cells
Stomach epithelium
