Chondrichthyes Review

The ovaries are held in place by mesenteries called the mesorchium.

Which jawed and extinct fishes most likely gave rise to sharks?

Which sense is the shark's sense of touch?

Which division of the skeleton contains the cranium and backbone?

Where is the actual site of gas exchange in the shark?

The valves in the valvular intestine increase surface area for absorption of nutrients.

Which word refers to the sense of smell?

Blood flow is slow and sluggish in sharks.

The liver produces oils, stores glycogen, and removes toxins from the blood.

Which word means stomach?

Which type of reproductive strategy is live birth with the embryo nutrition from the yolk and not the mother?

Which structures are used to maintain the shark's balance?

Which fin, along with the pectoral fins, are paired?

The appendicular skeleton includes the fins and their supports or girdles.

The gall bladder makes bile used to digest fats.

Because a shark has fixed fins, it can easily swim backwards.

What triggers a feeding frenzy?

What organ destroys worn out red blood cells?

Which sense is represented in the anteriormost part of the brain?

What is the class name for sharks?

A swim bladder helps sharks maintain buoyancy.

Which muscles lower the pectoral fins?

Which sense would be best to detect a living prey animal buried under sand?

Where do digestive enzymes enter the intestine?

Shark nostrils are used for both sensing chemicals in water and as part of the respiratory system.

Which structure makes cerebral spinal fluid used to nourish the brain and spinal cord?

The ventral aorta branches several times to supply the entire body with blood.

What are the ridges in the stomach that allow it to expand when eating a large meal?

Where in the tail is the spinal cord? In the

Which cavity is the largest and contains most of the organs?

What organ regulates blood sugar by making insulin?

What organ removes excess salt from the blood?

What is the opening for the excretory, digestive, and reproductive systems?

What are the powerful muscles of the tail called?

Which of the following is TRUE about the shark's circulatory system?

In what phylum are sharks?

What is the main organ for excretion in sharks?

Sharks are fusiform in shape meaning they are tapered at both ends.

Which muscle listed below helps move water over the gills?