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2/25 - double circulation and osmoregulation
n/a
30
Biology
Undergraduate 2
02/27/2014

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Term
what are the 2 circuits of the double circulation system?
Definition
pulmonary (lungs) and systematic (body)
Term
how many chambers are in the heart of a double circulation system?
Definition
4
Term
why is a double circulation system beneficial?
Definition
birds and mammals are endothermic, so they need more energy and need the blood to travel faster
Term
what is a valve from the ventricle called?
Definition
semilunar
Term
what are the 2 places there are always valves?
Definition
from atrium to ventricle and ventricle out
Term
what are the valves from the atrium to the ventricle called?
Definition
atrioventricular valves
Term
which side of the heart is thicker and stronger? why?
Definition
left side
must pump blood to entire body
Term
what are the 2 things that osmoregulation regulates?
Definition
water and salts
Term
what is the purpose of osmoregulation? to maintain what?
Definition
homeostasis
Term
what is the 3rd thing that osmoregulation regulates? what does that contain? What does that correlate with?
Definition
wastes
N
nucleic acids and amino acids
Term
what is it called when the amino group (NH2) is cleaved off?
Definition
deamination
Term
what do verts and inverts use for deamination?
Definition
inverts: digestive gland
verts: liver
Term
what are the 3 different types of waste NH2 can produce?
Definition
ammonia, urea, uric acid
Term
what animals produce ammonia? why? is it basic or acidic?
Definition
fish, water animals
water can dilute out or get rid of the basic NH3
basic
Term
what animals produce urea? is it basic or acidic?
Definition
mammals, most amphibians, sharks, some bony fish
neutral
Term
what animals produce uric acid? why?
Definition
birds, insects, many reptiles, land snails
can be excreted in solid form, so there is little H2O needed
Term
what substance is found in cleidoic eggs? what does this say about it?
Definition
uric acid
it is a very neutral substance
Term
what is a good description of excretory systems?
Definition
very "tubular"
Term
what are the 3 mechanisms used by the excretory system?
Definition
filtration
reabsorption/secretion
excretion
Term
what are the 2 ways the ES does filtration?
Definition
body fluids into ES via either force or osmotic pressure
Term
what are the solutes of the ES called?
Definition
filtrate
Term
how does the ES perform reabsorption/secretion?
Definition
active transport
Term
how does the ES perform excretion/what is excretion? what form is it in?
Definition
the removal of unwanted compounds from the body
urine
Term
what is one of the most common invertebrate ES?
Definition
Nephridium
Term
how does the ES in a flatworm work?
Definition
the ends of the tubes are called flame bulbs
the flame bulb turns, and the body filters out what they do and don't want
Term
how does the ES in a earthworm work? what is the waste product of the earthworm?
Definition
there is a large network of tubes called metanephridium
ammonia
Term
what kind of ES do arthropods have?
Definition
different types because of the different environments
Term
what is the excretory structure of the crustacean? (seen on crawfish)
Definition
green glands/antennal glands
Term
what are the holes that waste is let out on crawfish called?
Definition
nephridiopores
Term
what is the waste product of crawfish?
Definition
ammonia
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