Permission required for reproduction or display... small-diameter blood vessels © 2000 Wadsworth Publishing Company/ITP © 2000 Wadsworth Publishing Company/ITP... Permission required f
Trang 1Phylum Annelida
Trang 2segmented Worms
¢ Body divided into repeating segments
Trang 3sedentary
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Trang 4Terrestrial
¢ Earthworm
Trang 6Echinodermata Uniramia
Trang 8
small-diameter blood vessels
© 2000 Wadsworth Publishing Company/ITP
© 2000 Wadsworth Publishing Company/ITP
Trang 9Metamerism
Sy UY ứ $ ((( (606 Prostomium
Peristomium
Trang 11Annelid development
11
Trang 13Copyright © The McGraw-Hill Companies, Inc Permission required for reproduction or display
tentacles ae Lo
Palp
Oblique Dorsal ‘ Prostomium Eyes Dorsal musole Vessol Intestine
Peristomium — cirrus Eggs Coelomic epithelium
(cirri) Respiratory ol Longitudinal muscle
Cirrus
Trang 15Tentacle
15
Trang 16
16
Trang 17Nereis
Clamworm - Ventral View
— anal cirri
Trang 18
18
Trang 19Fireworm
Trang 20
Sedentary Polychaete Lugworm
Copyright © The McGraw-Hill Companies, Inc Permission required for reproduction or display
Sand falling into shaft Water movement
Trang 21
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Trang 22
FEATHER DUSTER
WORM
Sabella melanostigma
Lives in a tube drilled through dead shell
intricately branched maroon tentacles will
quickly contract at the slightest approach
Trang 23Pelagic* Polychaete
“Drift in the open ocean
23
Trang 25Copyright © The McGraw-Hill Companies, Inc Permission required for reproduction or display
External Structures of an Earthworm
Prostomium
I al LÍ |Í| 7
Mouth
Clitellum
Trang 26Lumbricus terrestris
¢ Feed on decaying organic matter
¢ Enrich soil
26
Trang 27Copyright © The McGraw-Hill Companies, Inc Permission required for reproduction or display
Intestine Dorsal blood
Longitudinal vessel Segment
Circular sả Nei fa Ventral
muscle ke @====ˆ 1 mesentery
SOTA TTS arleta muscle
Trang 28Copyright © The McGraw-Hill Companies, Inc Permission required for reproduction or display
Internal Structures of an Earthworm
Crop CAlcferousglands ~— Seminal vesicles
Dorsal blood vessel _ SS hs hy ne
io Ou Seminal ¬=
ở receptacle Lateral mu
Vas nerves Mouth
deferens Ganglia Pharyngeal
Oviduct of ventral — connective peristomium
Trang 29Copyright © The McGraw-Hill Companies, Inc Permission required for reproduction or display
Dorsal vessel Peritoneum
Cuticle
Epidermis
Circular muscle Longitudinal muscle
= ohlosole ae 2 ¿ << > Setae
yphlosole — "1 =a PAIN Z4
5 bee \ ¬U & Mh t Setal retractor
Chloragogen cells NF 2 J Nephridium
`5 ~
rat
ST Tr seas ——— —
— —- eae “-
Lateroneural Ventral Subneural § Ventral nerve cord
vessel vessel vessel
29
Trang 31Ventral vessel
31
Trang 32Copyright © The McGraw-Hill Companies, Inc Permission required for reproduction or display
Nephridia Posterior
Anterior
Nephric tubule
Trang 33Copyright © The McGraw-Hill Companies, Inc Permission required for reproduction or display
Lateral nerves Cerebral ganglia
Mouth
Subpharyngeal Circumpharyngeal
Nerve cord ganglion connective
Trang 34Copyright © The McGraw-Hill Companies, Inc Permission required for reproduction or display
Earthworm Reproduction
Funnel Ovary Seminal receptacles Seminal vesicles
Anterior
Trang 36Copyright © The McGraw-Hill Companies, Inc Permission required for reproduction or display
? „ đã *
Trang 37
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