Summary: Bio 125 Anatomy
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bio 125 Anatomy final
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what are the functions of saliva?
It moisten, dissolves food, binds food together(Bolus)
It aids in digestion of starch
It prevents tooth decay by neutralizing acids
It contains bactericidal enzymes, antiviral substances, and antibodies to kill harmful oral microorganisms
contains proteins to help growth of beneficial bacteria -
what are the 2 types of salivary glands?
Intrinsic Salivary glands
and
Extrinsic Salivary glands -
intrinsic salivary glands
scattered within mucosa of tongue,
palate, lips, and cheeks; keep mouth moist at all times -
Extrinsic Salivary glands
lie external to the mouth but have ducts that open to the mouth -
From the mouth, the ____ and ____ allow passage of food and fluids to the esophagus and air to the trachea?
Oropharynx and Laryngopharynx -
The pharynx is lined with a ______ epithelium and mucus glands
stratified squamous -
what are the 2 skeletal muscle layers of the pharynx?
Inner longitudinal and outer pharyngeal constrictors -
the empty esophagus is folded which way?
longitudinally and flattened -
in the esophagus glands do what? and bolus do what?
glands secrete mucus, and bolus move through the esophagus -
in the esophagus muscularis changes from ____ to ____?
skeletal (superiorly) to smooth muscle (inferiorly)
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