Although at the present time the populations of sea turtles are in low numbers, there is no concern amongst marine scientists, who think this is just a result of the natural life cycle of these organisms (this is why sea turtles are not considered to be endangered).

In reviewing healthcare provider admission orders for a patient admitted for treatment of a deep vein thrombosis of the left lower leg, which order should the nurse question?

The external nares of sharks connect to the gills and are used for extracting oxygen from the water.

Which of the following is not a function of the notochord?

Most sharks have 5 pairs of gills slits, which are used for the water to exit once it has passed by the gills.

The melon is a fatty organ in odontocetes that is used for echolocation. It focuses sound in front of their heads.

The bones of penguins are heavier than those of flying birds (of comparable size). Penguins can afford the extra weight because the water supports their bodies. In addition, the extra weight helps them to dive underwater.

A patient with newly diagnosed type 2 diabetes mellitus asks the nurse what “type 2” means in relation to diabetes. The nurse explains to the patient that type 2 diabetes differs from type 1 diabetes primarily in that with type 2 diabetes

Which of the following is a characteristic of the animals in the phylum Chordata?

Whales use low frequency sound waves during echolocation for