Amphibians 0.0 / 5 ? zoologyAmphibians UniversityNone Created by: phoeberbCreated on: 16-05-19 14:49 What are the classes of amphibia? Anura, urodela, apoda 1 of 20 Amphibian skin features Epidermis and Dermis, 20-85% of 02 from skin, cutaneous respiration 2 of 20 Name 3 Stratums Granulosum- solute barrier, Germinavatum- epidermis regeneration, Spongiosum- mucus and poison 3 of 20 strange feature of amphibian eyes Eyeball pushes food down throat, retractor and levator bulbi 4 of 20 anuran vision 360 field of vision, close up vision is poor, detect movements 5 of 20 How have modern anuran skeletons evolved? ilium/urostyle, fused tibia/fibula and radius/ulna, elongated tarsals, less vertebrae 6 of 20 name 2 anuran pelvic muscle urostyle muscle due to having no tail, thigh extensor for swimming and jumping 7 of 20 features of sacrum-pelvis junction mobile hinge, lump seen in back is the pelvic girdle, absorbs impact 8 of 20 tongue in lingual feeding tongue attached to lower front jaw, pivots around muscle and flips out 9 of 20 Internal anatomy- major organs liver- dark lobules, stomach and intestine- tubular, urinary bladder- large structure, urine can be reabsorbed, kidneys- no loop of henle 10 of 20 Male organs testes next to kidneys, vas efferentia takes sperm to cloaca 11 of 20 female organs ovaries next to kidneys, ova pass down oviducts to cloaca 12 of 20 fertilisation features sperm and eggs ejected out of cloaca by each frog 13 of 20 reproduction behaviours form amplexus, external fertilisation, cloaca apposition 14 of 20 how do dehydrated frogs osmoregulate? Hypothalamus increases AVT, this increases aquaporin channels in the kidneys, bladder and pelvic skin 15 of 20 features of frog lungs Simple, alveoli for gas exchange, buccal pumping for respiration and vocalisation 16 of 20 frog inspiration buccal cavity expands drawing air in from outside and from the lungs 17 of 20 frog expiration buccal cavity contracts, air is drawn out of nostrils into the cavity and into the lungs 18 of 20 how many chambers in a frog heart 3 chambers both supply single ventricle 19 of 20 difference in the right and left side roles in frog heart right side- systemic veins, 02 rich blood from cutaneous respiration. left- pulmonary veins 20 of 20
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