ANSC 301 Exam 1 with verified answers
already passed
goals and objectives pt. 1 - correct answer ✔✔describe anatomy and digestion
compare and contrast ruminants vs nonruminants
identify stomach compartments
alimentary canal - correct answer ✔✔tube from mouth to anus (digestion and absorption)
complete tract
lumen (digesta)--inside colon
tubular structure
gastrointestinal tract (GIT) - correct answer ✔✔region of alimentary canal
stomach to colon
alimentary canal structure - correct answer ✔✔series of 4 tissue lining
mucosa
submucosa
muscularis
serosa
mucosa - correct answer ✔✔alimentary canal structure
first that digesta interacts with
interface with lumen
absorption and secretion
,submucosa - correct answer ✔✔structural and immune cells
muscularis - correct answer ✔✔muscle for motion
keeps digesta moving
serosa - correct answer ✔✔interact with body cavity
mouth
pharynx - correct answer ✔✔chewing (mechanical digestion)
initiation of swallowing reflex
salivary glands - correct answer ✔✔moisten food, lubrication, polysaccharide (digesting
enzyme) --mucus, amylase
esophagus - correct answer ✔✔move food to stomach by peristaltic waves, lubrication (mucus)
stomach function - correct answer ✔✔solubilization of food, kill microbes (HCl)
protein-digesting enzyme (pepsin)
lubricate and protect epithelial surface (mucus)
store, mix, dissolve food, regulate emptying
pregastric functions - correct answer ✔✔prehension, mastication, swallowing
humans=food, animals=feed
mouth, esophagus, pharynx, salivary gland
,prehension - correct answer ✔✔food to mouth, varies the most
mastication - correct answer ✔✔chewing, break down bolus, physical reduction
salivation - correct answer ✔✔lubricate bolus, help feed be swallowed
3 major glands
3 major glands of salivation - correct answer ✔✔parotid (watery, enzymes, ions, start digestion)
sublingual (mucous, lubricate)
submaxillary (mixed, mucus, ions, enzymes, water, both jobs)
functions of saliva - correct answer ✔✔moisten feed (ions, water)
lubrication (aids swallowing)
starch digestion (amylase)
nitrogen recycling (urea)
rumen pH buffering
specialized functions
deglutition (swallowing) - correct answer ✔✔most similar, reflex initiated by presence of food in
pharynx (stops respiration)
propulsion of food to stomach by esophageal peristalsis (involuntary)
major functions of gastric digestion - correct answer ✔✔mixing, mechanical breakdown
hydrolytic digestion by acid enzymes
reservoir for controlled release of digesta to SI
, stomach - correct answer ✔✔size, shape varies
lined by nonglandular or secretory epithelium
functions: storage, mixing, partial digestion
limited absorptive capacity
esophageal (nonglandular) - correct answer ✔✔section of the stomach
no actual function
nonglandular (prevents rise of acid)
sphyncter that shuts esophagus and esophageal region
cardiac region - correct answer ✔✔section of the stomach
mucus producing
lubrication and protection (prevent ulcers)
top portion
fundus - correct answer ✔✔peptic gland region (glandular)
gastric pits
chief (peptic) cells --proteolytic enzyme (pepsinogen)
parietal cells (HCl)
human stomach = 10 pH
pariental=pH=HCl
pepsinogen - correct answer ✔✔activated by low pH
pepsinogen-pepsin/HCl-pepsin-ingested protein-short peptides
pyloric region - correct answer ✔✔mucus secreting
already passed
goals and objectives pt. 1 - correct answer ✔✔describe anatomy and digestion
compare and contrast ruminants vs nonruminants
identify stomach compartments
alimentary canal - correct answer ✔✔tube from mouth to anus (digestion and absorption)
complete tract
lumen (digesta)--inside colon
tubular structure
gastrointestinal tract (GIT) - correct answer ✔✔region of alimentary canal
stomach to colon
alimentary canal structure - correct answer ✔✔series of 4 tissue lining
mucosa
submucosa
muscularis
serosa
mucosa - correct answer ✔✔alimentary canal structure
first that digesta interacts with
interface with lumen
absorption and secretion
,submucosa - correct answer ✔✔structural and immune cells
muscularis - correct answer ✔✔muscle for motion
keeps digesta moving
serosa - correct answer ✔✔interact with body cavity
mouth
pharynx - correct answer ✔✔chewing (mechanical digestion)
initiation of swallowing reflex
salivary glands - correct answer ✔✔moisten food, lubrication, polysaccharide (digesting
enzyme) --mucus, amylase
esophagus - correct answer ✔✔move food to stomach by peristaltic waves, lubrication (mucus)
stomach function - correct answer ✔✔solubilization of food, kill microbes (HCl)
protein-digesting enzyme (pepsin)
lubricate and protect epithelial surface (mucus)
store, mix, dissolve food, regulate emptying
pregastric functions - correct answer ✔✔prehension, mastication, swallowing
humans=food, animals=feed
mouth, esophagus, pharynx, salivary gland
,prehension - correct answer ✔✔food to mouth, varies the most
mastication - correct answer ✔✔chewing, break down bolus, physical reduction
salivation - correct answer ✔✔lubricate bolus, help feed be swallowed
3 major glands
3 major glands of salivation - correct answer ✔✔parotid (watery, enzymes, ions, start digestion)
sublingual (mucous, lubricate)
submaxillary (mixed, mucus, ions, enzymes, water, both jobs)
functions of saliva - correct answer ✔✔moisten feed (ions, water)
lubrication (aids swallowing)
starch digestion (amylase)
nitrogen recycling (urea)
rumen pH buffering
specialized functions
deglutition (swallowing) - correct answer ✔✔most similar, reflex initiated by presence of food in
pharynx (stops respiration)
propulsion of food to stomach by esophageal peristalsis (involuntary)
major functions of gastric digestion - correct answer ✔✔mixing, mechanical breakdown
hydrolytic digestion by acid enzymes
reservoir for controlled release of digesta to SI
, stomach - correct answer ✔✔size, shape varies
lined by nonglandular or secretory epithelium
functions: storage, mixing, partial digestion
limited absorptive capacity
esophageal (nonglandular) - correct answer ✔✔section of the stomach
no actual function
nonglandular (prevents rise of acid)
sphyncter that shuts esophagus and esophageal region
cardiac region - correct answer ✔✔section of the stomach
mucus producing
lubrication and protection (prevent ulcers)
top portion
fundus - correct answer ✔✔peptic gland region (glandular)
gastric pits
chief (peptic) cells --proteolytic enzyme (pepsinogen)
parietal cells (HCl)
human stomach = 10 pH
pariental=pH=HCl
pepsinogen - correct answer ✔✔activated by low pH
pepsinogen-pepsin/HCl-pepsin-ingested protein-short peptides
pyloric region - correct answer ✔✔mucus secreting
