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