Exam 3 Flashcards
Lec. 11-15
what prevents the initial depolarization at the S-A node from spreading across the heart?
connective tissue between the atria and ventricles
the p wave of the ecg is produced by the
depolarization of the atria
the main difference between the pulmonary circuit and the systemic circuit
the pulmonary circuit produces lower pressures
what is myoglobin?
a respiratory pigment found in muscle cytoplasm
what is secreted to increase the production of red blood cells when O2 levels are low?
erythropoeitin
what systems effect the change in flow resistance in the glomerular blood pressure?
nervous and endocrine
which substance is typically found in urine at the highest concentration?
urea generated from protein metabolism
a molecule greater than __ kilodaltons cannot pass through the nephrons
12.5
glomerular filtration rate in vertebrates is defined as the rate of __ of an animal’s kidney tubules
primary urine formation by all
after the kidneys, the __ contribute(s) most to filtration
heart
podocytes are found in the __
bowman’s capsule
amphibians use __ for gas exchange
gills, lungs, and skin
as gas exchange membrane area increases, body weight ___
increases
depolarization during a heartbeat is initiated by the __
S-A node
vital capacity does not include __
residual volume
which group of animals are not able to digest carbohydrates in their oral cavity?
canine and feline
which group of animals are not able to store bile?
equine
which group of animals are primarily able to break down their food by microbial action for nutrient absorption?
bovine