Download - Review for Lab Practical
review for lab practical I
Hemichordate
• Kingdom: Animalia. Phylum: Hemichordata. Class: Enteropneusta. Genus: Balanoglossus.
• Acorn worm• Dioecious – separate male and
female
Can you find the……
Proboscis
Proboscis coelom
Collar Collar coelom
Dorsal blood vessel(and nerve)
Ventral blood vessel(and nerve)
Stomochord
This is a cross section of? Balanoglossus pharynx
This is a cross section of….?Balanoglossus intestines
Figure 2.2 aFigure 2.2 b
Urochordata
• Phylum Chordata. Subphylum Urochordata. Class Ascidiacea.
• Tunicates• Ecteinascidia• Monoecious = one house– Both male and female parts in one organism.
Can you find the…?
•Buccal/Incurrent siphon
•Atrial/excurrent siphon
•Tunic
•Stomach
•Intestine
•Rectum
•Anus
•Testes
•Ovary
•Pharynx
•Pharyngeal slits
•Endostyle
Incurrent/Buccal SiphonExcurrent/Atrial siphon
Tunic
Anus
Rectum
Ovaries
Stomach
Pharynx
Pharyngeal slits
Endostyle
Testes
Intestine
??
??
??
??
Also note: Excurrent and Incurrent siphonsBranchial basket w/ pharyngeal slits Adhesive papilla
??Post Anal tail
??
??
Esophagus
Testes
Ovaries
Intestine
Stomach
Stigmata
Endostyle
Cephalochordata
• Phylum: chordata, Subphylum: cephalochordata, Class: Leptocardii
• Amphioxus • Lancelets
Find the…
Find the…
•Dorsal hollow nerve cord
•Notochord
•Wheel organ
Male or female?Female
Find the…• DHNC
•Notochord
•Pharynx
•Endostyle
•Gonad
•Segmental muscle
•Dorsal fin
•Epibranchial groove
What is… 1. Dorsal fin
2. DHNC
3. Notochord
4. Intestine
5. Ventral fin
** If you can see the dorsal AND ventral fins, Chances are it’s an intestinal region!!
Identify: 1. Dorsal fin2. Dorsal nerve cord3. Notochord4. (Rostrum) 5. Oral hood6. Wheel organ7. Oral Cirri8. Velum
Agnathans
• Phylum: chordata, Subphylum: Vertebrata, Class: Cephalaspidomorphi, Order: Petromyzontiformes, Genus: Petromyzon
• Jawless• Lampreys
External features to identify:
Nostril
Caudal Fin
Tail Dorsal fins
Trunk
External gill slit
Eye
Buccal Cavity
Where the pineal gland should be.
What can you identify?
**Hypophyseal pouch
Identify…
Spinal cord
Notochord
Caudal artery
Caudal vein
Spinal cord
Notochord
Esophagus
BranchialTube
Ventral aorta
Gill Laminae
Anterior Cardinal
Vein
Olfactory sac
Hypophyseal pouch
Cranial cartilage
Carotid artery
Eye
Eye muscle
Papillae
Tooth
Tongue
Notochord
Posterior cardinal vein
Liver
Dorsal aorta
Spinal cord
Testes
Myomeres
Liver
Intestine
Male. Testes. Female. Ovaries.
Eye spotEar vesicle
Gill slits
VelumOral tentacles
Procencephalon
**Look for the eye spot.**
NotochordNerve cord Dorsal fin
IntestineEsophagusGill slits