Chelonians

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The flashcards below were created by user kenleyc on FreezingBlue Flashcards.


  1. What is the beak called?
    rhamphotheca
  2. What is the dorsal shell called?
    carapace
  3. what is the ventral shell called?
    plastron
  4. What connects the dorsal and ventral shell
    bridges
  5. What are the keratin shields covering the shell called?
    scutes
  6. The scutes on the edge of the shell are called
    marginals
  7. The scutes that are between the marginals and the vertebrals are called
    pleurals
  8. the scute on the dorsal neck region is the
    nuchal
  9. inner lining of carapace and plastron
    coelomic membrane
  10. pericardial and pleuroperitoneal cavities
    coelom
  11. composed of parietal peritoneum and pericardium
    transverse septum
  12. this lies dorsal to the heart and empties into the right atrium
    sinus venosus
  13. These are located on either side of the cloaca and are used to store water
    accessory urinary bladder
  14. This functions as gills when the aquatic turtles are submerged
    accessory urinary bladder
  15. male copulatory organ
    phallus
  16. the seminal fluid flows externally along the ______ when mating
    ejaculatory groove
  17. Name the scutes on the plastron from cranial to caudal
    • gular
    • humeral
    • pectoral
    • abdominal
    • femoral
    • anal
  18. This bone of the skull is located dorsally and projects caudally
    supraoccipital bone
  19. True or false, chelonians have paired occipital condyles like amphibians
    False, they only have one
  20. Chelonians have how many cervical vertebrae
    8
  21. These are fused with the carapace
    dorsal vertebrae (10) and ribs
  22. How many sacral vertebrae do chelonians have?
    2
  23. How many caudal vertebrae?
    25-30
  24. What do turtles use to increase and decrease lung volume
    limb movements and muscles
  25. What are other ways aquatic turtles acquire oxygen
    oral mucosa, skin, accessory urinary bladder, and cloaca
  26. These superficial veins run from the hind limbs to the hepatic portal vein
    left & right ventral abdominal veins
  27. The anastomosis between the two ventral abdominal veins cranial to the pelvic girdle
    transverse abdominal vein
  28. These are the main collecting system for venous blood from the musculoskeletal system
    • L&R ventral abdominal veins
    • transverse abdominal vein
  29. How many chambers does the heart have?
    Three
  30. What keeps oxygenated blood from mixing with deoxygenated blood in the single ventricle
    an incomplete ventricular septum
  31. Does the left aortic arch receive oxygenated or deoxygenated blood?
    deoxygenated blood from the right part of the ventricle
  32. Does the right aortic arch contain oxygenated or deoxygenated blood?
    Oxygenated - from the left part of the ventricle
  33. This carries mostly deoxygenated blood to the lungs
    left pulmonary artery
  34. This supplies the forelimb, neck and head with oxygenated blood
    brachiocephalic trunk
  35. The 4 major veins that enter the sinus venosus
    • - Left and right cranial vena cavae
    • - left hepatic vein - from left liver lobe
    • - caudal vena cavae - from right liver lobe
  36. This side of the bilobed bladder is larger and most bladder stones localize here
    Left
  37. This lies dorsal to the heart and empties into the right atrium
    sinus venosus
  38. The oxygenated blood from the pulmonary veins empties into what structure?
    Left atrium
  39. Four major veins entering the sinus venosus
    • Left cranial vena cava
    • Right cranial vena cava
    • left hepatic vein
    • caudal vena cava

Card Set Information

Author:
kenleyc
ID:
316510
Filename:
Chelonians
Updated:
2016-03-02 02:06:29
Tags:
turtles tortoises
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Description:
Chelonian anatomy
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