Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
what is digesta and where does it begin
|
mechanical breakdown of food and in the buccal cavity
|
|
|
Whats a gizzard
|
especially muscular part of the stomach that mechanically grinds food swallowed into small pieces
|
|
|
name a way to increase effectiveness of digestion
|
increase time exposed to mechanical and chemical breakdown
|
|
|
what do spiral valves do
|
turn digestion into a lengthened course
|
|
|
what does the ceca do
|
temporarily sequester the good while longer intestines extend time in the track
|
|
|
two ways to increase effectiveness of digestion
|
increase surface area and time spent
|
|
|
what is the oil in sharks liver called
|
squalene
|
|
|
what percent of bodyweight can squalene make up and what else does it do
|
16-24% and it is less buoyant than water allowing the shark to float
|
|
|
give the order of the ailmentary canal of a parakeet
|
esophagus, crop, esophagus, proventriculus, gizzard, (pancreas), cloaca, cloaca bursa
|
|
|
What does the spiral valve do
|
lengthens the route traveled by food to increase the time of digestion
|
|
|
what is different in the ailmentary canal in carnivores
|
they typically have shorter intestines due to their nutrient dense food supply. basically, plants are harder to extract nutrients from
|
|
|
is the rectal gland of a shark involved with digestion
|
fuck no
|
|
|
what does the rectal gland of a shark do
|
collects excess salts in the circultion and then excretes them via the digestive tract
|
|
|
what do mesenteries do
|
mesenteries keep organs in position and define spaces in which active organs can operate more freely
|
|
|
what else do mesenteries do
|
mesenteries restrict the amount of tensile force experienced by many blood and lymphatic vessels that extend between the body wall and internal organs
|
|
|
what would happen if there were no mesenteries
|
shifting organs could wrap these vessels or pull them apart.
|
|
|
what happens to the coelom in fishes, amphibians, and mammals
|
coelom arises from the somitomeres, is divided by a fibrous transverse septum
|
|
|
what two cavities does this divided coelom form
|
pericardial and pleuroperitoneal cavities
|
|
|
what does the small coronary ligament attachem in fishes, amphs, and mammals?
|
the cranial end of the liver to either the transverse septum or diaphragm
|
|
|
what happens in a bird embryo
|
the pulmonary fold grows obliquely to establish contact with the liver and the body wall
|
|
|
what does this division do
|
confines the lung to the pleural cavity
|
