Breathing difference between sharks and local fish
Gills are used for oxygen-boney fish
Ram ventilation-Sharks
Shark phylum
Chordata
Can fish hear
Low frequency lines and receptoral system
What are nares for
Nose for scents lead to whole receptors
What do nares look like
Slits with muscles behind them
Ampullae of Lorenzini or ampullary organs
Sense the surrounding when eyesight cannot be used to locate prey with electro reception fields
Difference between shark and dolphin fins
Sharks move left to right with sharp fin, vertical tail. Dophins move up and down with curved fin, horizonal tail.
What is special about their teeth
In rows, while also curving into a point
Difference between the skeletal material of sharks and fish
Fish-Bone
Shark-Cartilage
What are the gaps in the hearts
Helps with oxygen flow
Location of vertebrate coelom
Along the back covering the spinal cord, adds structure
Peritoneum
Shiny covering over the muscles
Mesentary
Tissues holding organs together or in place
How can fish maintain their buoyancy control
-Squalene storage releasing or holding
-Reduction of heavy tissues through elasmobranch cartilaginous skeleton
-Fins provide lift to maintain vertical position
-Swim bladder controls the amount of gas
Liver Function
Stores or removes squalene based on how the shark moves, buoyancy.
Produces Bile to break down fats
Liver identification
Right and left lobe, sometimes a smaller middle one. Largest organ almost extending the length of the cavity
Gallbladder Function
Stores bile and connected to the bile duct connecting to the U-shaped duodenum
Gallbladder Identification
Under median liver, grey, flattened sac
Spleen Function
Central organ of the immune system, producer and reservoir for the red blood cells
Spleen Identification
Dark reddish triangular shape near the stomach, shape connecting to the pancreases
Pancreas function
Helps with digestive enzymes and produces anti bodies
Pancreas Identification
Connected to the spleen and duodenum white lighter in color
Ventral to stomach
Kidney function
Filter blood waste, like urea, manages saltwater balance
Kidney Identification
Parrallel and long, dorsally on either side of the midline
