Exam 3 slides

Bio 2

• Phylum: – Porifera

• Structure: – spongin

• Molecule: – collagen

• Phylum:– porifera

• Structure:– Spicules

• Molecule: – calcium carbonate – or silicon

Sponge/scypha

• Phylum: – porifera

• Class:– calcarea

• Canal type: – synconoid

Sponge 1.sscypha

ostium Incurrent canalRadial canal

amphiblastula

Layer:mesoglea

spongocoelapopyl

Cell:Ameobocytes/archyocytes

Cell:choanocytes

Opening here:prosopyle

Scypha spongocoel

Incurrentcanal

Radial canal apopyle

Sponge gemmules

Sponge gemmules

Spongespicules

Leucosolenia

osculum

Leucosolenia

• Phylum:– Porifera

• Class:– calcarea

• Canal system: – asconoid

osculum

Obelia young medusa strew

Genus: Obelia

Class: Hydrozoa

Structures: medusa buds

Obelia young medusa strew

Obelia young medusa strew

Aurelia planula larvejelly fish

Phylum: Cnidarian

Structure: planula

Locomotion: cilia

Aurelia ephyra

Class: scyphazoa

Genus:Aurelia

Obelia colony

Colony:Hyrdranth(feeding)

tentacles

Colony:Gonangium(reproductive)

Medusa buds

Structure:Perisac(dead material)

Molecule:catin

Coenosarc(living)

Hydranematocysts

Hydrabudding

tentacles

Basal disc (foot) mouth

bud

hypostome

Hydra

• Phylum: – cnidarians

• class: – hydrozoa

epidermis

gastrodermis

Mesoglea layer

Gastrovascular cavity

Planaria w.maka (scientific name): dugesia

Eye spots

pharynxClass: turbellaria

Planaria c.s

Gastrovascular cavity Nerve chord

pharynx

Circular muscles

Longitudinal muscles

epidermis

gastrodermis

Buccal cavity

Parenchymalayer

Anterior portion of Clonorchis

mouth

Oral sucker

pharynx

esophogas

Intestinal Secum (?)

Mid section of Clonorchris

Yolk gland

uterus

Sturcture hiding under uterus:Ventral sucker

Intestinal secum

Posterior portion of Clonorchris

ovaryYolk gland

testies

Clonorchis w.mcommon name: human liver fluke

mouth

Gastrovascular cavity

uterus

Yolk glands

testiesovaries

Excretory pore

Clonorchis eggs

Fasciola hepaticaclass: Trematoda

Oral sucker

Ventral sucker

Uterus w/eggs

Yolk glands

testies

• Organism: – Fasciola hepatica

• stage/life: – Cercaria

• *goes to vegetation and comes back as metacercaria

• Organism: • Fasciola hepatica

• stage/life/structure:– miracidium

• *this is what comes out of the egg, goes into snail

Fasciola hepatica(redia)

Fasciola hepatica Cercaria

Fasciola hepatica(metacercaria)

• Scistosoma cercaria

• Species: scistosoma

• Head has digestive enzymes to go into human

• Branched tail help it to swim

Schistosoma w.mfemale and male

Gender: female

Gender: male

Ventral sucker

Oralsucker

Gynecophoric canal

Schistosoma w.mfemale and male

Schistosoma ova

spikespike

Taenia scolexstructure: scolex

suckersproglottids

Mature proglottids

ovary

Yolk gland

testies Genital pore

Gravid ploglottids

*filled with eggs

Organism: Dipylidium caninum

Rostellum(identified by elevation)

suckers

hooks

Organism: Dipylidium caninum

Gential pores (2)

ovaries

testies

Organism: Dipylidium caninum

ovaries

sperm

Genital pore

Organism: Echinococcus granulosus

Hydatid cyst

Organism: Echinococcus granulosus

3 segments: scolex

geminated zone

mature proglottids

*Organism: Echinococcus granulosus is smallest tapeworm [3 segments]

Diphylobothrium latum ova

• Organism: – Diphylobothrium latum

• Disease: – pernicious anemia

(megaloblastic anemia): vitamin B12 deficiency

scolex

Organism: Tania solium

Class:Cestoda (tapeworm)

Structure: Cystercercus

Disease:Cerebral cysticercosis