Term
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Definition
Body is rounder and shorter
Pharynx becomes divided longitudinally
Larval hood is replaced by oral disc w/ teeth
Eyes enlarge
Nostril shifts to the top of the head
Parasite of fish |
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Term
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Definition
Two dorsal fins
Caudal fin |
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Term
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Definition
Hood-shaped opening fringed w/ sensory papillae
Supported by a cartilaginous ring that serves as a sucking disc for attachment to the host |
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Term
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Definition
| Not homologous to true vertebrate teeth |
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Term
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Definition
Back of buccal funnel
Dorsal to tongue |
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Term
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Definition
Bears sharp, horny teeth
Used for rasping |
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Term
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Definition
Single nostril
Located middorsally on top of the head
Opens into olfactory sac |
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Term
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Definition
Oval area just behind the notril
So-called third eye
Contains photoreceptors to detect changes in illumination |
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Term
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Definition
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Term
LAMPREY
External Gill Slits
(2) |
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Definition
Seven gill slits
Just behind the eye on each side of head |
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Term
LAMPREY
Lateral Line System
(2) |
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Definition
Consists of specialized receptors located in small patches on the head and trunk
Sensitive to currents and water movement |
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Term
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Definition
| Projecting urogenital papilla and ventral juncture of the trunk and the tail |
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Term
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Definition
| In front of the urogenital sinus |
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