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CVM: 720 Anatomy II > Lecture 51/52: Reptile basics > Flashcards

Lecture 51/52: Reptile basics Flashcards

1
Q

what is the difference between Chelonians and Squamata

A

Chelonians: includes terrapins, tortoises, & turtles

Squamata: includes lizards & snakes

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2
Q

T/F Chelonians and Squamata both have no extant reptiles in Antarctica

A

true

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3
Q

what is this showing

A

Skeletal components of vestigial femur within the pelvic spur

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4
Q

Snakes, some boids, including both pythons and boa constrictors, have pelvic _____________ with bony components of their skeletal system

A

pelvic remnants (vestigial femur w/in spurs)

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5
Q

Boas & Pythons often possess ____

A

spurs

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6
Q

what is this showing on a boa/python

A

spur (helps align snake with its mate)

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7
Q
A

green tree python

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8
Q
A

raindow boa

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9
Q

what is important to note about Chelonians vertebrae

A

The only vertebrate group in which The pectoral girdle is contained inside of the rib cage

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10
Q

identify the parts of chelonian shell

A

**C on top
**P on bottom

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11
Q

what is the green circle indicating that is unique to Chelonians

A

Only vertebrate group in which the pectoral girdle is contained inside of the rib cage!

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12
Q

what is the Jacobson’s organ critical for

A

detecting scents, odors, and chemical information from the reptile’s environment

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13
Q

Reptile flicks tongue into & across dorsal aspect of oral cavity to capture ____________

A

chemical signals within the environment

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14
Q
A

in roof of mouth, when tongue flicks out it will touch the Jacobson organ and it will process the scent

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15
Q

where is the heart located in the snake

ON EXAM (HE STRESSED THIS)

A

within the cranial 25 to 30 % of body length

OR

cranial 1/3 of body length

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16
Q
A

(note that lungs are very elongated (almost all organs to fit their slender body)

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17
Q

T/F Reptilian heart is 3 chambered

EXAM!!!!!

A

true (the 2 ventricles are combines)

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18
Q

Phlebotomy sites in Chelonians:

why is the jugular vein blood collection beneficial

A

least lymph contamination and easy access

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19
Q

which blood collection site in Chelonians is moderately difficult

A

Brachial vein blood collection

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20
Q

which blood collection site in Chelonians is even more difficult to obtain compared to the Brachial vein

A

Dorsal tail vein blood collection

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21
Q

what Phlebotomy sites in Chelonians is nice due to the ease of access

A

Dorsal vertebral sinus blood collection

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22
Q
A

Jugular vein blood collection: least lymph contamination!

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23
Q
A

Dorsal vertebral sinus blood collection

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24
Q
A

Dorsal tail vein blood collection

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25
Brachial vein blood collection
26
Phlebotomy sites in Squamata: Specifically snakes which blood collection sites have low risk
Coccygeal “tail” vein phlebotomy site: low risk/ low difficulty and Cardiac phlebotomy site: low to moderate risk/ low to moderate difficulty
27
what Phlebotomy site in Squamata has a low risk but high level of difficulty
Palatine vein phlebotomy site
28
which Phlebotomy sites is being used
Coccygeal “tail” vein phlebotomy
29
which Phlebotomy sites is being used
Palatine vein phlebotomy site
30
which Phlebotomy sites is being used
Cardiac phlebotomy site
31
32
which lung is this
Close-up of right lung (this is a terrible photo but I dont know what nadar is gonna ask)
33
Turtle Respiratory Radiographs what is the minimum amount of images that have to be taken EXAM!!!!!!!
3! -dorsal/ventral -cranial/caudal -lateral
34
what view is this
Dorsal / Ventral view: lung fields revealed
35
Lateral view : lung fields revealed
36
Cranial / Caudal view: lung fields revealed
37
describe the brain of a sea turtle
"reptilian" brain; more like just the brain stem
38
Chelonian Nervous System:
39
40
which one is the feline brain vs. leatherback turtle
top) cat (Felis catus), ~3.9 kg body mass (bottom) leatherback turtle (Dermochelys coriacea), ~ 350 kg body mass I KNOW ITS OBVIOUS:)
41
42
purpose of salt gland
larger than the brain, helps handle excess salt levels
43
44
turtle digestive system
44
Galapagos tortoises mating
44
what is being pointed to
Tortoise engorged phallus (DO NOT CALL THIS A PENIS)
44
which is male or female
note: males will have an indent that allows him to line up properly with the female
45
How can you tell if a turtle is a male or female based on shell, tail, plastron
shell length= females are longer tail= males have a notch plastron= male is concave
46
T/F All turtles lay eggs, but not all reptiles do
true
46
How can you tell if a turtle is a male or female: claws,tail size, species, cloaca
claws: males are longer tail size: male longer and thicker species: certain ones have gender specifics cloaca: female is much rounder and looks like a star
46
what is this showing
Male hemipenes placed within female vent
47
what is this showing
Pueblian Milk snakes entwined in mating pose
48
In male snakes, hemipenes become engorged with _________ rather than whole blood as in mammals
lymph fluid
49
what are Hemipenes
male phallic organs, bilaterally symmetrical
50
what is this showing
Western Garter Snake – mating ball in Summer breeding season
51
Venomous Reptiles of North America: 4 Snakes types EXAM
Eastern Diamondback Rattlesnake Cottonmouth moccasin Eastern Coral snake (MOST POTENT VENOM) Copperhead snake
52
Coral snakes--Rear-Fanged Venomous snake; highest percentage of neurotoxins in venom
53
Copperhead snakes -Pit Viper group
54
Rattlesnakes--Pit Viper group
55
Cottonmouth moccasin--Pit Viper group
56
what is this showing
Infra-red heat detection organ They use this to make a 3D image of their prey
57
Venomous Reptiles of North America: 2 Lizard types
Gila monster: Heloderma suspectum Beaded lizard: Heloderma horridum
58
Venomous Reptiles of North America 2 Lizard types:
Gila monster: Heloderma suspectum 1 species
59
Venomous Reptiles of North America 2 Lizard types:
Beaded lizard: Heloderma horridum 3 species
60
what is this showing
Approximate range of venomous lizards in N. America (mexico,arizona, central america)
61
T/F reptiles have 2 AORTIC ARCHES
true
62
63
How do we sex snakes
Blunt probes used to measure length of hemipenes in relation to the number of scutes, i.e. belly scales
64
Do snakes have eyelids?
no, eye scales
65
which venomous snake is NOT a Pit Viper
coral snake
66
rattlesnake

CVM: 720 Anatomy II (44 decks)

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