BIO 181 REVIEW EXAMINATION QUESTIONS WITH COMPLETE SOLUTIONS
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Course
BIO 181
Institution
BIO 181
BIO 181 REVIEW EXAMINATION QUESTIONS WITH COMPLETE SOLUTIONS
What kind of epithelium lines the stomach - Answer-Simple
What kind of epithelium lines the buccal - Answer-Stratified
Submucosa - Answer-layer of dense irregular connective tissue
Has large blood vessels, lymphatic vessels, & co...
BIO 181 REVIEW EXAMINATION
QUESTIONS WITH COMPLETE
SOLUTIONS
What kind of epithelium lines the stomach - Answer-Simple
What kind of epithelium lines the buccal - Answer-Stratified
Submucosa - Answer-layer of dense irregular connective tissue
Has large blood vessels, lymphatic vessels, & contain exocrine glands.
Submucosal plexus
Why do we have a little bit of the nervous system located in the submucosa? - Answer-
Sends a signal about how that organ is feeling.
Smooth muscle cells arranged in two layers- inner circular layer & outer longitudinal
layer. - Answer-Muscularis Externa
Movement of digestive materials down the digestive tract
Coordinated rhythmic smooth muscle contractions - Answer-Peristalsis
What are the movements of the Muscularis externa and peristalsis controlled by? -
Answer-Enteric Nervous System (ENS)
Between circular and longitudinal muscle layers - Answer-Myenteric Plexus
Cycles of contraction
Churn and fragment the bolus
Mix contents with intestinal secretions
Does not have a set pattern
Does not push materials in any one direction - Answer-Segmentation
Functions of the oral cavity - Answer-Sensory analysis
Mechanical processing
Lubrication
Limited digestion
Functions of the tongue - Answer-Mechanical (compression, abrasion, & distortion)
Manipulation to assist in chewing and to prepare material for swallowing
Why do we digest french fries so quickly? - Answer-Because french fries are made of
two things starch & fats.
How much salvia is produced per day? - Answer-1.5 L
What % of salvia is water - Answer-99.4%
How many enzymes are in salvia - Answer-0.6%
What is the purpose of salvia - Answer-Lubricates the mouth/food
Dissolves food that stimulate taste buds & provide sensory information
Initiate digestion of complex carbohydrates by the enzyme salivary amylase (ptyalin)
What are the 3 external regions of the teeth? - Answer-Crown, Neck, Root
How long does it take for fluoride to get into the enamel - Answer-2 minutes
Exposed portion of the tooth - Answer-Crown
Surrounded by gingiva - Answer-Neck
Base of the tooth. Sits beneath gums in bony alveolus - Answer-Root
Cone-shaped pointed teeth for tearing/slashing (1 root) - Answer-Cuspids (canines)
Flat crown used for grinding (1-2 roots) - Answer-Bicuspids (premolars)
Large flat crown for grinding (3+ roots) - Answer-Molars
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