PHGY 216 MODULE 6 EXAM
QUESTIONS AND ANSWERS
the movement of muscles, along with secretions - Correct Answers -digestion and
absorption of food
primary role of digestive system - Correct Answers -consume and transfer nutrients,
water, electrolytes in the body
why do we need the digestive system to transfer nutrients, water, electrolytes - Correct
Answers -ATP production
growth of tissues
the movement of nutrients from the digestive tract to circulatory system - Correct
Answers -absorption
the breakdown of food into small molecules - Correct Answers -digestion
movement through circulatory system - Correct Answers -distribution
the movement of nutrients into cells for metabolism or anabolic process - Correct
Answers -usage
4 main functions of the digestive system - Correct Answers -motility
secretion
digestion
absorption
muscular contractions that mix and propel contents of digestive system. - Correct
Answers -motility
which digestive organs use skeletal muscles? - Correct Answers -mouth
top of esophagus
external anal sphincter
the smooth muscles of the digestive system have a constant tone. t/f - Correct Answers
-true.
-prevent stretching of walls and keep pressure
where do the secretory cells of the digestive system get their raw materials? - Correct
Answers -plasma
,the secretions of digestive enzymes are secreted into which part of the digestive tract? -
Correct Answers -lumen
all secretions in the digestive tract are exocrine. t/f - Correct Answers -false. endocrine
hormones secrete in blood to help motility
carbohydrates: only monosaccharides can be absorbed. t/f - Correct Answers -true
dietary fats are usually consumed as: - Correct Answers -triglycerides
from fats, which 2 are the only ones that can be absorbed? - Correct Answers -free fatty
acids
monoglycerides
digestible units move from digestive tract ____________________ and into the
_______________and ___________________. - Correct Answers -lumen
blood and lymph
the innermost layer of the digestive tract walls. - Correct Answers -mucosa
how does the mucosa increase surface tension? - Correct Answers -folds
-highest absorption, highest number of folds
this part of the digestive tract walls is made up of connective tissue and provides
support for mucosa - Correct Answers -submucosa
you can find large blood and lymph vessels in this part of the digestive tract - Correct
Answers -submucosa
smooth muscle layer that surrounds submucosa - Correct Answers -muscularis externa
this part of the digestive tract wall has an inner circular and outer longitudinal layer -
Correct Answers -muscularis externa
the roles of the inner and outer layers of the muscularis externa - Correct Answers -
inner: decreases lumen diameter
outer: shortens tube
both provide propulsive contractions
the myenteric plexus can be found in the submucosa. t/f - Correct Answers -false.
muscularis externa
help to regulate local gut activity
the outer connective tissue layer that covers digestive tract - Correct Answers -serosa
, what benefit does the serosa being continuous with the mesentary have? - Correct
Answers -helps to suspend digestive organs from inner wall of abdominal cavity
contains a network of nerves - Correct Answers -submucosa.
submucosal plexus
4 factors that regulate digestive system function - Correct Answers -autonomous
smooth muscle function
intrinsic nerve plexus
extrinsic autonomous nerves
GI hormones
smooth muscles with pacemaker-like rhythmic, spontaneous change in membrane
potential. - Correct Answers -slow-wave potential
where does slow-wave potential originate from? - Correct Answers -non-contractile
interstitial cells of Cajal (ICC)
Where are Cajal cells located? - Correct Answers -boundary of circular and longitudinal
muscle layers
slow-wave potentials are active potentials. t/f - Correct Answers -false
cannot induce contractions
why can slow-wave potentials move between cells? - Correct Answers -smooth muscle
cells are separated by gap junctions
the two nerve plexus' of the enteric nervous system - Correct Answers -submucosal
myenteric
what is the primary purpose of the ENS? - Correct Answers -self-regulation
*can receive input from ANS at times
how does the body know if food is stuck in digestive tract? - Correct Answers -sensory
neurons
which system influences motility and secretion by modifying the activity of the ENS ,
regulating GI secretion and innervation of smooth muscle and glands - Correct Answers
-ANS
which part of the ANS slows down digestive tract contractions and secretions - Correct
Answers -Sympathetic
which part of the ANS increases smooth muscle cell contractility and promotes
secretion of digestive juices and hormones. - Correct Answers -parasymp
QUESTIONS AND ANSWERS
the movement of muscles, along with secretions - Correct Answers -digestion and
absorption of food
primary role of digestive system - Correct Answers -consume and transfer nutrients,
water, electrolytes in the body
why do we need the digestive system to transfer nutrients, water, electrolytes - Correct
Answers -ATP production
growth of tissues
the movement of nutrients from the digestive tract to circulatory system - Correct
Answers -absorption
the breakdown of food into small molecules - Correct Answers -digestion
movement through circulatory system - Correct Answers -distribution
the movement of nutrients into cells for metabolism or anabolic process - Correct
Answers -usage
4 main functions of the digestive system - Correct Answers -motility
secretion
digestion
absorption
muscular contractions that mix and propel contents of digestive system. - Correct
Answers -motility
which digestive organs use skeletal muscles? - Correct Answers -mouth
top of esophagus
external anal sphincter
the smooth muscles of the digestive system have a constant tone. t/f - Correct Answers
-true.
-prevent stretching of walls and keep pressure
where do the secretory cells of the digestive system get their raw materials? - Correct
Answers -plasma
,the secretions of digestive enzymes are secreted into which part of the digestive tract? -
Correct Answers -lumen
all secretions in the digestive tract are exocrine. t/f - Correct Answers -false. endocrine
hormones secrete in blood to help motility
carbohydrates: only monosaccharides can be absorbed. t/f - Correct Answers -true
dietary fats are usually consumed as: - Correct Answers -triglycerides
from fats, which 2 are the only ones that can be absorbed? - Correct Answers -free fatty
acids
monoglycerides
digestible units move from digestive tract ____________________ and into the
_______________and ___________________. - Correct Answers -lumen
blood and lymph
the innermost layer of the digestive tract walls. - Correct Answers -mucosa
how does the mucosa increase surface tension? - Correct Answers -folds
-highest absorption, highest number of folds
this part of the digestive tract walls is made up of connective tissue and provides
support for mucosa - Correct Answers -submucosa
you can find large blood and lymph vessels in this part of the digestive tract - Correct
Answers -submucosa
smooth muscle layer that surrounds submucosa - Correct Answers -muscularis externa
this part of the digestive tract wall has an inner circular and outer longitudinal layer -
Correct Answers -muscularis externa
the roles of the inner and outer layers of the muscularis externa - Correct Answers -
inner: decreases lumen diameter
outer: shortens tube
both provide propulsive contractions
the myenteric plexus can be found in the submucosa. t/f - Correct Answers -false.
muscularis externa
help to regulate local gut activity
the outer connective tissue layer that covers digestive tract - Correct Answers -serosa
, what benefit does the serosa being continuous with the mesentary have? - Correct
Answers -helps to suspend digestive organs from inner wall of abdominal cavity
contains a network of nerves - Correct Answers -submucosa.
submucosal plexus
4 factors that regulate digestive system function - Correct Answers -autonomous
smooth muscle function
intrinsic nerve plexus
extrinsic autonomous nerves
GI hormones
smooth muscles with pacemaker-like rhythmic, spontaneous change in membrane
potential. - Correct Answers -slow-wave potential
where does slow-wave potential originate from? - Correct Answers -non-contractile
interstitial cells of Cajal (ICC)
Where are Cajal cells located? - Correct Answers -boundary of circular and longitudinal
muscle layers
slow-wave potentials are active potentials. t/f - Correct Answers -false
cannot induce contractions
why can slow-wave potentials move between cells? - Correct Answers -smooth muscle
cells are separated by gap junctions
the two nerve plexus' of the enteric nervous system - Correct Answers -submucosal
myenteric
what is the primary purpose of the ENS? - Correct Answers -self-regulation
*can receive input from ANS at times
how does the body know if food is stuck in digestive tract? - Correct Answers -sensory
neurons
which system influences motility and secretion by modifying the activity of the ENS ,
regulating GI secretion and innervation of smooth muscle and glands - Correct Answers
-ANS
which part of the ANS slows down digestive tract contractions and secretions - Correct
Answers -Sympathetic
which part of the ANS increases smooth muscle cell contractility and promotes
secretion of digestive juices and hormones. - Correct Answers -parasymp
