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Comp Vert Anatomy 1 > Chapter 5 Part 1 > Flashcards

Chapter 5 Part 1 Flashcards

1
Q

What is a Vertebrae?

A

Has a Backbone

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2
Q

Animals that have only the Cranium are…

A

not true vertebrates

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3
Q

Vertebrates also have

A

Neural Crest Cells, Internal Organs, Endoskeleton

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4
Q

Neural crest cells- embryonic stem cells forms…

A

sensory organs, parts of cranium, teeth, etc

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5
Q

Internal organs-

A

liver, kidneys, endocrine glands, heart and closed circ. systm.

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6
Q

Endoskeleton (fish)-

A

Made of cartilage or bone; provides movement

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7
Q

Vertebrates are divided into 2 categories:

A

Superclass Agnatha and Gnathostomata

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8
Q

Agnathan examples are

A

hagfish and lampreys

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9
Q

Gnathostomata examples are

A

cartilaginous/bony fish, tetrapods

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10
Q

Superclass Agnathan-

A

absence of hinged jaw/paired appendages; sucker like mouth reinforced with cartilage

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11
Q

Superclass Gnathostomata-

A

Prescence of hinged jaw and paired appendages

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12
Q

Most diverse and numerous group of vertebrates-

A

Gnathostomata

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13
Q

Class Chondrichthyes have 2 groups

A

Elasmobranchs-sharks, ray
Holocephalans-ratfishes

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14
Q

Characteristics of Class Chondrichthyes

A

cartilaginous endoskeleton
carnivores/scavengers
no swim bladder/gill cover
placoid scales

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15
Q

Superclass Osteichthyes have

A

swim bladder/gill cover, adapt to life in water

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16
Q

Most species rich group of all vertebrates-

A

bony fishes (more than 30,000 living species)

17
Q

Swim bladder-

A

gas filled sac that helps with buoyancy

18
Q

Gill cover-

A

hard plate, covers gills, helps water pump over gills

19
Q

2 Major groups of Bony Fish

A

Ray finned (Class Actinopterygii) and Lobbed finned (Class Sarcopterygii)

20
Q

Ray-finned have no

A

muscles within fins, bony rays support and stiffen each fin

21
Q

Lobe-finned have

A

paired fins, long fleshy muscular lobe, supported by central co-jointed

Comp Vert Anatomy 1 (34 decks)

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