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Another squid dissection question The brachial hearts are sometimes referred to as the gill hearts. Why?...

Another squid dissection question

The brachial hearts are sometimes referred to as the gill hearts. Why?

In what ways does the beak show adaption to the squid's diet?

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Answer #1

The gills are 2 white feathery structures found within the mantle cavity.  

Squid actually have 3 hearts!

Each of these hearts is quite small and slightly yellowish in color.

At the base of each gill is a branchial heart (also called the gill heart) which pumps blood from the body up to the gills to be oxygenated. (These are the auricles).

The third heart is larger and located between the two branchial hearts.

This is called the systemic heart and pumps oxygenated blood from the gills to the rest of the body. (This is the ventricle).

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The squids' two tentacles are specially adapted for feeding and they use them to grab their prey. They have a sharp beak on their mouths that they use to breakopen shells.

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