Shedding & Molting. Jacobson Organs – Smell & Flehming. 6th Sense Pit Vipers. Circulatory System. Reptile: 3 chambered heart - 2 atria & one ventricle with partial septum - oxygenated blood has limited mixing with deoxygenated Crocodilians have 4 chambers Birds: 4 chambered heart.
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Reptile: 3 chambered heart - 2 atria & one ventricle with partial septum - oxygenated blood has limited mixing with deoxygenated
Crocodilians have 4 chambers
Birds: 4 chambered heart
1. Most ammonia in the body forms when protein is broken down by bacteria in the intestines. The liver normally converts ammonia into urea, which is then eliminated in urine.
2. Birds & reptiles both excrete uric acid crystals (white pasty stuff) not urea.
3. What is the advantage of secreting uric acid Vs. urea?
Reptiles – have only an inner ear bone that picks up low frequencies from ground vibrations
Birds – owls hunting / most birds hear best at frequencies they or their predators produce
Most reproduce sexually though some can produce asexually - Parthenogenesis is a form of asexual reproduction in which females produce eggs that develop without fertilization.
All reptiles reproduction is either:
Viviparous - live birth
Oviparous - external egg laying - leathery covering
Ovoviviporous - develop eggs that remain internal until they hatch or are about to hatch