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Comp Vert Anatomy 1 > Chapter 7 Part 1 > Flashcards

Chapter 7 Part 1 Flashcards

1
Q

Chondrocranium-

A

formed of endochondral bone/cartilage
supports brain

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2
Q

Dermatocranium-

A

Later verts. , forms outer brain case
composed of dermal bones

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3
Q

Types of Jaw Attachments: How mandible is attached to skull-

A

Hyostylic, Metautostylic, Craniostylic

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4
Q

Hyostylic-

A

some fishes (shark); attached through hyomandibula

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5
Q

Metautostylic-

A

amphibians, reptiles, birds; attached thru quadrate; hyomandibula becomes part of ear ossicles

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6
Q

Craniostylic-

A

mammals; upper jaw incorporated into braincase; dentary suspended

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7
Q

Cranial Kinesis-

A

movement between upper jaw and braincase

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8
Q

Kinetic skulls found in

A

bony fishes, birds, most reptiles

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9
Q

Akinetic skulls found in

A

amphibians, turtles, crocs, mammals

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10
Q

Cranial kinesis in Reptiles (3 types)

A

Metakinesis, Mesokinesis, Prokinesis

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11
Q

Metakinesis-

A

hinge across back of skull

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12
Q

Mesokinesis-

A

Hinge behind eye

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13
Q

Prokinesis-

A

hinge in front of eye

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14
Q

Lingual Feeding-

A

“Accelerator” muscle wraps around lingual process of hyoid apparatus

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15
Q

advtg. of Kinesis:

A

provides change size/configuration of mouth rapidly.
Optimizes biting/rapid feeding

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16
Q

advtg. of Akinesis:

A

juveniles/adults chew more accurately with sets of specialized teeth set in skull; stronger bite
Allows easier sucking motion for infants

17
Q

Snake skulls are

A

prokinetic

18
Q

Snake: Most mobility results from

A

upper/lower temporal bars being lost; no movement restrict. in temporal region

19
Q

Snake: mandible suspended from

A

quadrate

20
Q

Pterygoid Walk: both halves of lower jaw are joined by

A

flexible soft tissues

21
Q

Pterygoid Walk: Mandibular tips extensively

A

move indep.-can “walk” over prey when swallowing

Comp Vert Anatomy 1 (34 decks)

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