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| *As the embryo grows within the egg, the composition of the egg changes. | | *As the embryo grows within the egg, the composition of the egg changes. |
− | * Both [[Exotics_-_Composition_of_the_Egg_-_Anatomy_%26_Physiology#Yolk|yolk]] and albumin diminish. | + | * Both [[Exotics_-_Composition_of_the_Egg_- Anatomy & Physiology#Yolk|yolk]] and albumin diminish. |
− | ** [[Exotics_-_Composition_of_the_Egg_-_Anatomy_%26_Physiology#Yolk|Yolk]] providing energy for growth and maintenance of the embryo. | + | ** [[Exotics_-_Composition_of_the_Egg_- Anatomy & Physiology#Yolk|Yolk]] providing energy for growth and maintenance of the embryo. |
− | ** Albumin providing protein for the embryo and giving up water, which is lost through pores in the [[Exotics_-_Composition_of_the_Egg_-_Anatomy_%26_Physiology#Shell|shell]]. | + | ** Albumin providing protein for the embryo and giving up water, which is lost through pores in the [[Exotics_-_Composition_of_the_Egg_- Anatomy & Physiology#Shell|shell]]. |
| * Water is produced when yolk fat is oxidised. | | * Water is produced when yolk fat is oxidised. |
| * Water lost from the egg is replaced by air, creating the 'air cell' at the blunt end of the egg. | | * Water lost from the egg is replaced by air, creating the 'air cell' at the blunt end of the egg. |
− | * Embryo punctures the [[Exotics_-_Composition_of_the_Egg_-_Anatomy_%26_Physiology#Embryonic_Membranes|chorioallantoic]] and [[Exotics_-_Composition_of_the_Egg_-_Anatomy_%26_Physiology#Shell_membranes|internal shell membrane]]. | + | * Embryo punctures the [[Exotics_-_Composition_of_the_Egg_- Anatomy & Physiology#Embryonic_Membranes|chorioallantoic]] and [[Exotics_-_Composition_of_the_Egg_- Anatomy & Physiology#Shell_membranes|internal shell membrane]]. |
| ** Able to begin pulmonary ventilation, rebreathing the 'air cell' gas. | | ** Able to begin pulmonary ventilation, rebreathing the 'air cell' gas. |
− | ** Transition from diffusive respiration through the [[Exotics_-_Composition_of_the_Egg_-_Anatomy_%26_Physiology#Embryonic_Membranes|chorioallantois]] to breathing through the [[Lungs_-_Anatomy_%26_Physiology|lungs]]. | + | ** Transition from diffusive respiration through the [[Exotics_-_Composition_of_the_Egg_- Anatomy & Physiology#Embryonic_Membranes|chorioallantois]] to breathing through the [[Lungs_- Anatomy & Physiology|lungs]]. |
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| === Heat Loss from the Egg === | | === Heat Loss from the Egg === |
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− | * Heat loss from the egg is prevented by a thin boundary layer of air adjacent to the [[Exotics_-_Composition_of_the_Egg_-_Anatomy_%26_Physiology#Shell|shell]]. | + | * Heat loss from the egg is prevented by a thin boundary layer of air adjacent to the [[Exotics_-_Composition_of_the_Egg_- Anatomy & Physiology#Shell|shell]]. |
| * If the egg is in a nest, the nest will also provide resistance to heat loss. | | * If the egg is in a nest, the nest will also provide resistance to heat loss. |
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