Phylum: Nematoda

Июль 29, 2022

Содержание

2. Phylum: Nematoda They are round worms Triploblastic animals Have complete digestive system with openings at both
3. C D
5. Ascaris sp. Pale white- body Lives as a parasite on mammals intestine
6. Posterior (broad) Anterior (pointed) Dorsal side (dissection will be along this side) Lateral line (lateral side)
7. Male Reproductive System testis vesicula seminalis Two lateral lines Vas deference gut
8. Female reproductive system Anterior ovary spermatheca oviduct lateral line
11. T.S. Male ascaris Testes Vas deference Epidermis Intestine Dorsal nerve cord Lateral line Ventral nerve cord
12. oviduct
13. T.S. female ascaris Dorsal nerve cord Dorsal line Intestine Cutical Epidermis Ovaries Uterus Oviduct Ventral line
14. cuticle epidermis Dorsal line Cytoplasmic part Contractile part Longitudinal muscle fibre
15. Enlarged part of body wall Dorsal line cuticle Syncytium Longitudinal muscle fiber epidermis Dorsal nerve cord
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Phylum: Nematoda
They are round worms
Triploblastic animals
Have complete digestive
system with openings

at both ends
Pseudocoleomate
Ex1:Anclystoma sp.

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C
D

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Ascaris sp.
Pale white- body
Lives as a parasite on mammals intestine

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Posterior (broad)
Anterior (pointed)
Dorsal side (dissection will be along this side)
Lateral line

(lateral side)

Female

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Male Reproductive System
testis
vesicula seminalis
Two lateral lines
Vas deference
gut

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Female reproductive system
Anterior ovary
spermatheca
oviduct
lateral line

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T.S. Male ascaris
Testes
Vas deference
Epidermis
Intestine
Dorsal nerve cord
Lateral

line

Ventral nerve cord

Pseudocoelom

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oviduct

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T.S. female ascaris
Dorsal nerve cord
Dorsal line
Intestine
Cutical
Epidermis
Ovaries
Uterus
Oviduct
Ventral

line

Pseudocoelom

Ventral nerve cord

Lateral line

Excretory canal

Genital epithelium

Central rachis

Genital epithelium

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cuticle
epidermis
Dorsal line
Cytoplasmic part
Contractile part
Longitudinal muscle fibre

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Enlarged part of body wall
Dorsal line
cuticle
Syncytium
Longitudinal muscle fiber
epidermis
Dorsal

nerve cord

Contractile part

Cytoplasmic process

nucleus

Cytoplasmic part (non contractile)