1 / 8

Crayfish Lab Preview

Crayfish Lab Preview. April 24, 2012. Crayfish General Information: Phylum: Arthropods - means “jointed foot” Class: Crustaceans 2 Body Parts : Cephalothorax Abdomen Review : General Terms: Dorsal – top side Ventral – bottom side Anterior – front end

oya
Download Presentation

Crayfish Lab Preview

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Crayfish Lab Preview April 24, 2012

  2. Crayfish General Information: • Phylum: Arthropods - means “jointed foot” • Class: Crustaceans • 2 Body Parts: • Cephalothorax • Abdomen • Review: General Terms: • Dorsal – top side • Ventral – bottom side • Anterior – front end • Posterior – back end Cephalothorax Abdomen Posterior Dorsal Ventral Anterior

  3. Crayfish External Features: Cheliped Antennae Compound Eye Walking legs Segment Telson

  4. Crayfish Body Systems • Circulatory System – How the blood circulates through the body. • Dyed pink • Heart - pumps blood. • Arteries – transports blood into open spaces (open circ. System) • Respiratory System • Gills – breathe under water. Heart Dorsal Abdominal Artery Gills Ventral Abdominal Artery

  5. Crayfish Body Systems Continued • Nervous System – Used to sense and feel things • Brain – very difficult to see. • Nerve Cord – only on ventral side of the crayfish Brain Nerve Cord

  6. Crayfish Body Systems Continued • Reproductive System – Making more crayfish • Male – letter A in picture • Testis – make sperm • Sperm Duct • Male opening • Swimmerets – moves sperm • Female – letter B in picture • Ovary – holds eggs • Oviduct opening • Swimmerets – moves eggs Testis Sperm Duct Ovary Oviduct opening Swimmerets

  7. Crayfish Body Systems Continued • Digestive System – Taking in food and breaking it down. • Mouth • Esophagus • Stomach - 2 interesting features • Location • Rows of teeth • Intestine • Anus Esophagus Intestine Stomach Anus Mouth

  8. Crayfish Body Systems Continued • Excretory System – Gets rid of wastes. • Anus – releases wastes. Anus

More Related