26. Animal Systems
• Animals must obtain energy by eating
• Major Systems:
– Digestive System
– Circulatory System
– Excretory System
– Locomotive System
– Sensory System
33. Circulatory Systems
• Diffusion
– Small animals, single-celled
• Open Circulatory System
– Worms, some mollusks, arthropods
• Closed Circulatory System
– Everything else
34.
35. Locomotion Systems
• Endoskeleton vs Exoskeleton
– Skeleton is for muscle attachment and
support against gravity
– Muscle can attach to something that is inside
the animal or outside the animal
• Endoskeleton = inside
• Exoskeleton = outside
57. What is Endothermy?
• Description of where and animal gets
its heat from:
– Ectotherms get heat from external
sources (Sun)
– Endotherms get heat from internal
sources (metabolism)
