Biology Questions and Answers
- How is it produced and
what is the function of
cholecystokin in the digestive
process?
The fat level of the chyme the duodenum stimulates thdetected ie secretionn (^)
of cholecystokinstimulating the secretion o (CCK). CCK actsf the by
pancreatic juice also, and the releasing
of bile by the gallbladder.
- Where is it produced and
what is the function of
enterogastrone in the
digestive process?
When the chyme is too fatty there is a
secretion oduodenum. This hormone reduces thf enterogastrone by the (^) e
peristalsis of the stomach thus slowing
the entrance (as the digestion of food into the duodenumof fats takes more
time).
- What are the special
structures of the avian
digestive tube and their
respective functions?
The digestive tustructures, in this sebe of birds has specialquential order: the (^)
crop, the proventriculus and the gizzard.
The crop has the function of temporary
storage of ingested food and it is a moredilated area of the avian esophagus.
The proventriculus is the chemical
stomach omixed with f the birds where food isdigestive enzymes. The (^)
gizzard is a muscular pouch that serves
as a mfood is ground to increase thechanical stomach where thee exposure (^)
area of the food particles for the
digestive enzymes to act.
- Compared to mammals do
birds absorb more or less
water in their digestive
system? Why is this
phenomenon an adaptation to
flight?
Bird feces are more liquid than mammalfeces, i.e., less water is absorbed in the
avian digestive system.frequent elimination of feces in birds The more (^)
due to their less solid feces is an
adaptation to fweight is kept lowlight since er. their body
- What is meant by
“mutualist exploration of
cellulose digestion”, a
phenomenon that occurs in
some mammals and insects?
Herbivorous animals eat great amounts
of cellulostheir digestive ee, a sunzymes. In thesebstance not digested by
animals regions of the digestive tube
are colonizdigest cellulose. This mutualisted by microorganisms that
ecological interaction between animals
and microohorses, cows, rarganisms occurs, e.bbits and in somg., ine
insects such as termites.
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