By: Alex and Brooke

* Kingdom: Animalia * Phylum: Chordata * Class: Phondrichthyes * Order: ________________ * Family: Squalidae * Genus: Squalus * Species: _______________

* Gray in color * Made up of dermal ____________ * Shaped like curved, grooved teeth * ______________ texture * Dorsal side is darker * Very thick skin

* Skeletal System * Made up of ____________ * Light weight and flexible * Muscular System * Red muscle * ____________ * Function for cruising * White muscle * Anaerobic * Used for sudden burst in ___________

* Brain is the center * Forebrain * ____________ * Hindbrain * Sense of smell very good * Well developed eyes * ________ line system for sense of touch * Sense of smell not highly adapted * Play no role in locating __________

* Mouth  ________________  gill slits * Blood in gill filaments absorbed oxygen from incoming water * Rely on _________

* _______ chambered heart * Heart  gills  body tissues * Low blood pressure * Muscular contractions needed to ____________ blood

* Short and wide __________ * Lower portion of digestive tract is the spiral valve * Increases ___________ absorbed * Digestive tract leads to rectum

* Aplacental Viviparity- live young * Part of the _____ that take care of offspring inside mother’s body * Protected by mother’s body before birth * Gestation period is _____ months * Born in ________ months * Most litters between * Sexually mature at 11 years

* Average length is feet * Distinguished by rows of small _____________ along sides * Live to be years old * Delicacy in __________ * Opportunistic feeder * Live in bathes and inshore waters