Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Comparative Anatomy

Alligator Axial and Skull Skeleton

QuestionAnswer
Neural Spine A dorsal projection of the vertebrae
Neural Arch The dorsal part of the vertebrae, forming the roof of the centrum
Centrum The opening for the spinal cord
Ribs Lateral projections from the thoracic vertebrae
Hemal Arch The ventral part of the vertebrae, forming the floor of the centrum
Cervical Vertebrae Vertebrae extending from the head to the pectoral girdle
Thoracic Vertebrae Vertebrae extending and forming the pectoral girdle to the lumbar vertebrae, which do not have ribs
Lumbar Vertebrae Vertebrae extending from the thoracic vertebrae (with ribs) to the pelvic girdle
Sacral Vertebrae Vertebrae forming the pelvic girdle
Caudal Vertebrae Vertebrae extending from the pelvic girdle to the tip of the tail
Premaxilla Anterior most bone of the skull, hosting the nares
Frontal Bone between the orbitals
Prefrontal Anterior to the orbitals and frontal, on either side of the nasal bones
Parietal Posterior most dorsal bone of the skull
Quadrate Bone on the posterior wall of the skull, below the parietal bone, attached to the quadratojugal
Quadratojugal Small bone connecting the quadrate to the jugal bone
Jugal Lateral bone forming the lateral side of the infratemporal fenestra and the orbital
Nasal Bone extending from the external nares in the premaxilla to the orbitals and frontal bone
Maxilla Lateral bone on either side of the nasal bones, posterior to the premaxilla
External Nares Anterior opening on the dorsal side of the skull in the premaxilla
Internal Nares Posterior opening on the ventral side of the skull in the palatine bone
Incisive Foramen Ventral opening below external nares anterior on the skull in the palatine process of the premaxilla
Posterior Palatine Vacuities Openings in the ventral side of the skull, below the orbitals
Pterygoid Ventral process on the lateral side of the skull that articulates with the lower jaw
External Auditory Meatus Canal on the lateral side of the skull in the posterior position
Supraoccipital Dorsal, medial bone on the posterior wall of the skull
Exoccipital Ventral and lateral to the supraoccipital, surrounding it and forming the dorsal side of the foramen magnum
Basioccipital On the posterior wall below the Occipital Condyle, below the foramen magnum
Occipital Condyle Articulation on the posterior wall between the vertebrae and the skull
Foramen Magnum Large opening in the posterior wall of the skull where the spinal cord enters
Articular Articulation, posterior, between the lower jaw and the pterygoid of the skull
Angular Bone anterior to the articular that hosts the external mandibular fenestra
Dentary Anterior most bone of the lower jaw
Coronoid Small bone on the medial side of the lower jaw helping form the external mandibular fenestra
Splenial Bone on the medial side of the lower jaw, medial to the dentary
Created by: LionsandGiants