Mudpuppy Lab Flashcards
How many pairs of external gills on a mudpuppy?
three
Much of amphibian respiration (70-90%) happens across ___.
the skin
The mudpuppy’s lungs contribute ___ to overall gas exchange.
~2%
There is a long, slit-like opening (the ___) in the floor of the __, which opens into
the lungs.
glottis
pharynx
pulmonary circuit
deoxygenated blood travels from the ventricle to the lungs and back to the heart
systemic circuit
moves blood from the heart to the body and back
How many chambers in a mudpuppy heart?
three (two atria, one ventricle)
Deoxygenated blood flows through the ___ atrium
right
Why is a mudpuppy’s blood not as oxygen-rich as in some other animals?
oxygenated and deoxygenated blood mix in the ventricle
The carotid artery, systemic artery, and truncus arteriosus lead to …
the body
The pulmocutaneous artery leads to…
the lung and skin
Mudpuppy teeth are __
homodont
Does the mudpuppy undergo morphogenesis?
no, it stays in a paedomorphic form
Similarity between the mudpuppy and dogfish stomachs
rugae
Mudpuppies are ___ because they don’t undergo morphogenesis and become uricoteles as adults.
ammonioteles
Unlike most ancient fish, mudpuppies have large__
bladders
____ and ____ allow the mudpuppy to reabsorb water
simple kidney
large bladder
Males have both their excretory and genital systems draining through the _______; in females, the ducts for the excretory and genital systems are separate.
archinephric duct
a gelatinous material produced by the ____ surrounds the eggs
oviducts
fertilization is ___ in mudpuppies
delayed, internal
male mudpuppies have a vestigial ____
oviduct
Which mudpuppy sex undergoes a seasonal change?
male cloacal glands swell and large pairs of papillae are visible
