The BlazersStudent #1, Student #2, and Student #3

LB144 F06

• Strongylocentrotus purpuratus

• Xenopus laevis

• Oryzias latipes

Sea Urchin

Unfertilized egg viewed at 400x magnification on compound microscope0 hours live specimen

Sea Urchin

Sea Urchin eggs after fertilization

Sea urchin blastula in motion

Sea Urchin

Vitelline Envelope

Sperm

Fertilized Egg viewed at 400x magnification on compound microscope1 minute live specimen

Sea Urchin

2 cell stage viewed at 400x magnification on compound microscope

1-3 hours live specimen

Sea Urchin

Early blastula viewed at 400x magnification on compound microscope

24 hours oldLive specimen

Blastocoel

Sea Urchin

Blastocoel

Animal Pole

Late blastula viewed at 400x magnification on compound microscope48 hours live specimen

Sea Urchin

Blastopore

Archenteron

Blastocoel

Animal plateGastrula viewed at 400x magnification

on compound microscopePrepared slide

Sea Urchin

Pluteus larva viewed at 400x magnification on compound

microscopePrepared slide

Intestine

Stomach

Oral arm

Esophagus

Mouth

Xenopus

Unsegmented egg viewed at 400x magnification on compound microscope

Prepared slide

Xenopus

Egg cleavage viewed at 400x magnification on compound

microscopePrepared slide

Pigmented cortex

Blastocoel

Xenopus

Blastula viewed at 400x magnification on compound

microscopePrepared slide

Vegetal Pole

Blastocoel

Animal Pole

Xenopus

Neural Tube in Neurulation viewed at 400x magnification on compound

microscopePrepared slide

Neural Tube

Midgut

Notochord

Epidermis

Coelem

Xenopus

7mm Embryo viewed at 100x magnification on compound microscope

Prepared slide

Yolk endoderm

Spinal cord

Notochord

Anus

Xenopus

10mm Larva viewed at 100x magnification on compound

micrscopePrepared slide

Details of this slide were not available

Mouth

Tail

Medaka

Elevated germinal disk viewed at 30x magnification on dissection

mircroscope30 minutes live specimen

Oil droplets

Germinal disk

Chorion membrane

Medaka

Late neurula stage viewed at 30x magnification on dissection microscope

24 hours live specimen

Neural tube

BlastodermOil drop

Medaka

Optic cup stage viewed at 30x magnification on dissection microscope

26 hours live specimen

Optic cup

Optic lens

Oil droplet

Yolk sac

Cilia

Medaka

Retinal pigmentation viewed at 30x magnification on dissection

microscope2 days 6 hours live specimen

Pigmented optic cup

Optic lens

Pectoral fin bud

Yolk sac

Oil drop

Medaka

Pink blood stage viewed at 30x magnification on dissection

microscope3 hours live specimen

Pectoral fin bud

Vitelline Vein

Yolk sac

Medaka

Pre-hatching stage viewed at 30x magnification on dissection microscope

5 days live specimen

Oil dropletOptic lens

Chromatocyte

Cilia

• Sponge• Hydra

• Planarian• Roundworm• Earthworm

• Mussel• Crayfish

• Grasshopper• Sea Star• Lancelet

• Porifera – Sponge• Cnidaria – Hydra• Platyhelminthes – Planarian• Nematoda – Roundworm• Annelida – Earthworm• Mollusca – Mussel• Arthropoda – Crayfish and Grasshopper• Echinodermata – Sea star• Chordata - Lancelet

Sponge

Cross-section view of sponge viewed at 32x magnification on compound microscope

Prepared Slide

SpongocoelRadial canals

Ostium

Incurrent canal

Sponge

Longitudinal section of sponge viewed at 32x magnification on compound

microscopePrepared slide

Spongocoel

Radial canal

Incurrent canal

Ostium

Sponge

Sponge tissue viewed at 32x magnification on compound microscope

Prepared slide

Spongin fibers

Hydra

Anterior region of hydra viewed at 32x magnification on compound

microscopeLive specimen

Body column

Tentacles

Mouth

Hydra

Posterior region of hydra viewed at 32x magnification on compound microscope

Live specimen

Basal disc

Body column

Tentacles

Hyrda

Longitudinal section of hydra viewed at 32x magnification on

compound microscopePrepared slide

Tentacles

Basal disc

Gastrodermis

Epidermis

Mesoglea

Gastrovascular cavity

Planarian

Anterior region of planarian viewed at 32x magnification on compound

microscopeLive specimen

Eyespot

Brain

Auricle

Pharynx

Planarian

Mid-section region of planarian viewed at 32x magnification on compound

microscopeLive specimen

IntestineGastrovascular cavity

Epidermis

Dorsalventral muscles

Ventral nerve cord

Adhesive gland

Planarian

Ventral nerve cord

Pharynx

Mid-section of body viewed at 32x magnification on compound microscope

Live specimen

Roundworm

Anterior region of roundworm viewed at 30x magnification on dissection microscope

Preserved specimen

Mouth

Roundworm

Pharynx

Anterior region of pharynx viewed at 30x magnification on dissection microscope

Preserved specimen

Roundworm

Intestine

Ovaries

Intestine viewed at 30x magnification on dissection microscopePreserved specimen

Roundworm

Oviduct viewed at 20x magnification on dissection microscopePreserved specimen

Oviduct

Roundworm

Ovaries

Ovaries viewed at 30x magnification on dissection microscope

Preserved specimen

Roundworm

Y-shaped uterus

Y-shaped uterus viewed at 30x magnification on dissection microscope

Preserved specimen

Roundworm

Vulva viewed at 25x magnification on dissection microscopePreserved specimen

Vulva

Roundworm

Female cross-section viewed at 32x magnification on compound microscope

Prepared slide

UterusOvaries

Cuticle

Epidermis

Longitudinal muscles

Intestine

Pseudocoel

Roundworm

Male cross-section viewed at 32x magnification on compound microscope

Prepared slide

Intestine

Vas deferens

Excretory canal

Dorsal nerve cord

Ventral nerve cord

Cuticle

Longitudinal muscles

Sperm

Earthworm

Anterior region viewed at 30x magnification on dissection microscope

Preserved specimen

Mouth

Prostomium

Earthworm

Seminal vesicles viewed at 30x magnification on dissection microscope

Preserved specimen

Seminal vesicles

Earthworm

The five hearts viewed at 30x magnification on dissection microscope

Preserved specimen

Hearts

Earthworm

Crop and gizzard viewed at 30x magnification on dissection

microscopePreserved specimen

Crop

Gizzard

Pumping vessels

Earthworm

Intestine and dorsal blood vessel viewed at 30x magnification on dissection

microscopePreserved specimen

Intestine

Dorsal blood vessel

Pumping vessels

Earthworm

Ventral nerve cord viewed at 30x magnification on dissection microscope

Preserved specimen

Ventral nerve cord

Intestine

Clitellum

Earthworm

Cross section viewed at 32x magnification on compound microscope

Prepared slide

Intestine

Coelom

Epidermis

Longitudinal muscles

Circular muscles

Earthworm

Cross section viewed at 32x magnification on compound microscope

Prepared slide

Ventral nerve cord

Epidermis

Longitudinal muscles

Circular muscles

Coelom

Intestine

Mussel

Full body of mussels viewed at 100x magnification on compound microscope

Prepared slide

TeethValve

Adductor muscle

Mussel

Full body mussel viewed at 400x magnification on compound microscope

Prepared slide

Teeth Adductor muscle

Valve

Mussel

Cross section viewed at 32x magnification on compound microscope

Prepared slide

Water tubes (brood chamber)Blood vessel

Surface of gill

Clam

Gill viewed at 7x magnification on dissection microscopePreserved specimen

Clam

Posterior adductor muscle viewed at 7x magnification on dissection microscope

Preserved specimen

Posterior adductor muscle

Clam

Mantel viewed at 7x magnification on dissection microscopePreserved specimen

Crayfish

Stomach

Stomach viewed at 7x on dissection microscope

Preserved specimen

Crayfish

Digestive gland

Heart

Ostia

Digestive gland and heart viewed at 7x magnification on dissection microscope

Preserved specimen

Crayfish

Gills viewed at 7x magnification on dissection microscope

Preserved specimen

Gill

Digestive gland

Crayfish

Intestine viewed at 7x on dissection microscope

Preserved specimen

Intestine

Muscle

Digestive gland

Crayfish

Testes viewed at 7x magnification on dissection microscopePreserved specimen

Testes

Digestive gland

Crayfish

Nerve cords

Brain

Green glands

Anterior region viewed at 7x magnification on dissection microscopePreserved specimen

Circumesophageal connective

Crayfish

Mouth viewed at 7x magnification on dissection microscopePreserved specimen

Mandible

Maxilla

3rd maxilliped

Grasshopper

Anterior region of grasshopper viewed at 7x magnification on dissection microscope

Preserved specimen

Antenna

Compound eye

Maxilla

PalpLabrum

Frons

Gena

Clypeus

Grasshopper

Gastric caeca viewed at 7x magnification on dissection microscopePreserved specimen

Gastric caeca

Egg mass

Crop

Grasshopper

Egg mass viewed at 9x magnification on dissection microscopePreserved specimen

Egg mass

Malpighian tubules

Grasshopper

Oviduct viewed at 7x magnification on dissection microscopePreserved specimen

Oviduct

Malpighian tubules

Grasshopper

Malpighian Tubules viewed at 12x on dissection microscope

Prepared specimen

Egg mass

Malpighian tubules

Grasshopper

Posterior region viewed at 7x magnificationPreserved specimen

OvipositorExoskeleton

Segments

Sea Star

Madreporite viewed at 7x magnification on dissection microscopePreserved specimen

Madreporite

Spine

Dermal gills

Pedicellariae

Sea Star

Stomach viewed at 7x magnification on dissection microscopePreserved specimen

StomachGonads

Sea Star

Ambulacral ridge viewed at 7x magnification on dissection microscopePreserved specimen

Ambulacral ridge

Gonads

Pyloric cecum

Sea Star

Gonads viewed at 7x magnification on dissection microscopePreserved specimen

Gonads

Ambulacral ridge

Sea Star

Pyloric cecum (digestive gland) viewed at 7x magnification on dissection microscope

Preserved specimen

Pyloric cecum

Spines

Sea Star

Ampullae viewed at 7x magnification on dissection microscopePreserved specimen

Ampullae Gonads

Pyloric cecum

Ambulacral ridge

Sea Star

Cross section viewed at 32x magnification on compound microscope

Prepared specimen

Coelom

Radial water canal

Pyloric cecumSkeletal plate

Sucker

Tube foot

Gonads

Ambulacral groove

Pedicellariae

Lancelet

Anterior region of lancelet viewed at 20x magnification on dissection microscope

Preserved specimen

Cirrus

Gills

Pharyngeal gill slits

Wheel organ

Lancelet

Posterior region of lancelet viewed at 9x on dissection microscopePreserved specimen

AnusMyotomes

Lancelet

Pharyngeal gill slits viewed at 32x on compound microscope

Prepared slide

Gills

Notochord

Dorsal nerve cord

Fin rays

Photoreceptors

Lancelet

Anterior region of lancelet viewed at 32x magnification on compound microscope

Prepared slide

Cirrus

Gills

Photoreceptors

Wheel organ

Lancelet

Posterior region of lancelet viewed at 32x on compound microscope

Prepared slide

Anus

Intestine

Fin rays

Lancelet

Cross section viewed at 32x magnification on compound microscope

Prepared slide

MyotomesIntestine

NotochordDorsal nerve cord

Dorsal fin

Villi

Resources

• LB144 7th Edition Lab Book Fall 2006• Investigating Biology 5th Edition• LB144 Red Lab Book