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• Temperature control• Layer of fat under skin• Sweat glands• together homeostasis
• Feeding• Specialized teeth
• Circulation• Highly specialized four-chambered heart
• Respiration• Lung intake regulated by diaphragm
• muscle around lungs that causes them to inflate
• Excretion• Kidney function to filter out urea (waste) and regulate water levels in body
• Response• Cerebral Cortex!!!
• Allows for higher-level though• ex. Reading, decisions, etc.
• Movement• back with flexible vertebrae • specialized pelvic girdles for specific movements
• 3 types, classified by way animals develop• Monotremes
• egg-laying mammals• duckbilled platypus
• Marsupials• development finished in puch
• kangaroo• Placental mammals
• all that give birth to live young• horse, whale, mouse, dog, primates
• Have a well-developed cerebrum • allows for more complex behavior• fingers, toes• arms with ball-in-socket joint that can rotate freely• binocular vision (suggests need for depth perception)
• Genus Homo• fossils show in Africa about 2.5 million years ago
• Homo sapiens• “Out of Africa” model
• evolved in Africa 200,000-150,000 years ago• left Africa in many migrations• supported by mitochondrial DNA samples showing a common ancestor