Lab Test 2 Flashcards
Anterior
Towards the nose of organism
Posterior
Opposite direction of anterior - towards the back end
Ventral
Towards the belly of the organism
Dorsal
Towards the back of the organism (eg. dorsal fin), opposite of ventral
Cranial
Towards the head (same as anterior in dinos)
Caudal
Towards the tail (same as posterior in dinos)
Proximal
Towards here the appendage joins the body
Distal
Towards the point further from the point of attachment to the body
Lateral
Towards the left or right side of the organism
Medial
Opposite of lateral- towards the midline of the organism
Label the skull openings on the dorsal view of the Eocaptorhinus, what kind of skull did it have?
Orbit, anapsid
Label the letters on the Tyrannosaurus Rex skull
A - lower temporal fenestra
B - upper temporal fenestra
C - orbit
D - antorbital fenestra
E - nasal opening
F - mandibular fenestra
What are the lines pointing to on the skull of the American Alligator? What are the characteristics that (1) classify it as a diapsid reptile, and (2) classify it as an archosaur? Where is it’s antorbital fenestrae?
Two temporal fenestra (1)
(2) socketed teeth
Antorbital fenestrae covered in bone
Label the Allosaurus vertebra
A - zygapophyses
B - neural canal
C - transverse process
D - centrum
E - neural arch
F - neural spine
Definitions/descriptions of :
Vertebra
Centrum
Neural arch
Neural canal
Neural spine
Zygapophyses
Transverse process
Spinal column is divided up into bone segments, each of which is called a VERTEBRA. Vertebra is made up of spool-spayed centrum and a neural arch. Between the centrum and the neural arch is the tubular passage called the neural canal, and holds the nerves of the spinal cord. The neural arch typically has a blade-like upward extension called a neural spine. Vertebrae may also have articular process (aka zygapophyses), which are paired projections on the anterior and posterior ends of each vertebrae that link (articulate) with the adjoining vertebrae. Transverse process stick out on the sides of the vertebrae and Steve as attachment sites for muscles or ligaments.
Definitions/descriptions of :
Vertebra
Centrum
Neural arch
Neural canal
Neural spine
Zygapophyses
Transverse process
Spinal column is divided up into bone segments, each of which is called a VERTEBRA. Vertebra is made up of spool-spayed CENTRUM and a NEURAL ARCH. Between the centrum and the neural arch is the tubular passage called the NEURAL CANAL, and holds the nerves of the spinal cord. The neural arch typically has a blade-like upward extension called a NEURAL SPINE. Vertebrae may also have articular process (aka ZYGAPOPHYSES), which are paired projections on the anterior and posterior ends of each vertebrae that link (articulate) with the adjoining vertebrae. TRANSVERSE PROCESS stick out on the sides of the vertebrae and Steve as attachment sites for muscles or ligaments.
Label the vertebrae
A - neural canal
B - centrum
C - neural arch
Match the proximal and distal end of the Allosaurus terminal phalanx of the front foot with the left and right side of the drawing
Proximal on left
Distal on right
Label the allosaurus dentary
A - tooth sockets
B - serrations
C - mobile joint
D - mandibular fenestra
Label the shark tooth and directions
A - crown
B - root
C - serrations
(1) - distal
(2) - proximal
Label the tyrannosaurus tooth and directions
A - serrations
B - crown
C - root
(1) distal
(2) proximal
Dentition
The development and arrangement of animals teeth
Temporalis muscles
Responsible for pulling the mandible up and back towards the skull
Homodont dentition
All teeth are generally the same shape but vary in size, seen in carnivorous dinosaurs