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Science 7 Chapter 13
The Cold-Blooded Vertebrates
Terms in this set (45)
animals that cannot control their body temperatures internally
oxygenated and deoxygenated
What type of blood is red?
organ that young amphibians have that the adults usually do not have
skull and vertebral column
endoskeleton of all vertebrate animals include
a fish moves by flexing its what?
a frog's tongue
is sticky, attached at the front of its mouth, and is used to catch food
What are the walls of a vertebrate heart made of?
lampreys and hagfish
differ from other fish because they have no jaws.
fish reproduction is called
have sight and smell but not hearing
turtles that live their entire lives on land
blood that has a high level of carbon dioxide
type of amphibian that has a tail
muscle that helps mammals and humans breathe
herbivores eat what?
brain, spinal cord
central nervous system includes
snakes, turtles, alligators, and lizards are in which group
lungs have many what?
deoxygenated blood becomes oxygenated in what?
does not mix
In a healthy animal with a four-chambered heart, oxygenated blood and deoxygenated blood mixes? or does not mix?
example of a carnivore
95% of all animals are what?
mammals and birds... endothermic? or ectothermic?
most fish have skeletons made of cartilage? or bone?
the study of living things to discover solutions to human problems
the state of inactivity that amphibians may enter during hot, dry weather
a supporting structure that is similar to but more flexible than bone
the structures that manufacture urine as they filter blood
the organ many fish use to help them float at a constant depth
passes food from the mouth to the stomach (LM p. 207)
mixes food with digestive system (LM p. 207)
stores bile (LM p. 207)
produces bile (LM p. 207)
makes enzymes and releases them into the small intestine (LM p. 207)
organ in which chemical digestion and absorption occur (LM p. 207)
tubular structure through which indigestible food passes (LM p. 207)
has a two chambered heart, skeleton made of cartilage
has two sets of teeth, the maxillary and vomerine; undergoes metamorphosis
has heat-sensing pits
broad, rounded snouts
narrow, pointed snouts; some teeth stick outside the jaws when the mouth is closed
name means "double life"; spend part of their lives in water and part on land
examples of irreducible complexity
vertebrate's circulatory system and respiratory system (if it does not work properly, the organism will die); respiratory system brings in fresh oxygen that body cells need for aerobic cellular respiration, but that oxygen cannot get to the body cells with out the circulatory system. Both systems had to be formed fully functional from the beginning
tadpole's tail is reabsorbed, or dissolved, and the adult frog has no tail. The gills that the tadpole used for respiration go away, and lungs develop. The heart develops a third chamber, and the pathway of blood becomes more complicated. The digestive system changes to accommodate the carnivorous nature of the adult frog.
similarities and differences in amphibians and reptiles
both are ectothermic vertebrates with a three chambered heart in the adults, and both are carnivorous; amphibians go through metamorphosis, reptiles don't; reptiles breath with lungs, amphibians use lungs and skin for respiration and they use gills for respiration when young; amphibians have a smooth, moist skin, but reptiles have a dry, scaly skin; amphibians fertilize their eggs externally, but reptiles have internal fertilization