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Anderson and Byerly Clam Dissection
Part I: External Anatomy
A and B:
This picture shows the oustide parts of the clam.
C. External Anatomy Chart
The bump on the top of
an inward projection of the tympanic membrane of the ear
an elastic structure that unites the two valves of a mussel
The hinge ligament hinges the valves together.
The bottom side of the
the opening where the palps, foot, and mouth help the clam
the back or top of the mussel;the hinge area
this helps locate the parts on the clam
The anterior side of the clam is the smaller side of the shell.
this is where you can find the foot and the mouth
The posterior side of the clam is the side that is bigger.
where the siphons are found
the rings on a mussel's shell
they grow larger as the soft clam in the inside does
the right or left half of a bivalve shell
They protect the mantle and the internal organs.
Part II: Opening up the clam
This picture shows the Mantle Cavity of our clam.
Inside the Clam
This shows the anterior adductor muscle, posterior adductor muscle, mantle, mantle cavity, foot, and gills of the our clam. The mantle is showing both valves and the mantle cavity is showing the shell underneath the yellow.
Anterior adductor muscle
The anterior adductor muscle is
a tough dark yellowish muscle.
This muscle holds left side of
the clam's shell together.
Posterior adductor muscle
The posterior adductor muscle is also
a dark yellowish muscle.
This muscle holds the right side
of the clam's shell together.
The mantle is a dark yellowish film that
covers the inside of the clam's shell.
The mantle protects the soft clam inside
and as a respiratory system.
The mantle cavity is the space between
the mantle and the inside of the clam's shell.
The cavity includes digestive, excretory, and
reproductive systems that empty into the mantle
cavity to be exited out the clam
The foot of a clam is a dark grayish color. The
foot has a wavy top.
this digs into the sand for protection
It is smooth and thin
these supply the clam with oxygen
from the water
Part III: Dissection of the Foot
Dissecting the Clam
In this clam it shows the palps, mouth, esophagus, stomach, digestive gland, intestine, anus, and reproductive gland.
these move the food into the mouth
Located at the anterior of the clam
the palps pass food through this
located below the mouth
swallows the food and helps it breathe
Located near the digestive glands
where the food that the mussel eats is digested
Greenish texture that surrounds the stomach
digests the food that the mussel eats
food comes through here before entering the anus
the flexible passage way where the clams
waste is excreted
where the clam's waste is passed through
It is thick and has much protection
allows the mussel to reproduce
Part IV: Pericardial Cavity
Heart Of the Clam
The clam shows the heart with its ostia, the pericardial cavity, and the intestine.
a organ that is
the blood circulates through here
Located near the dorsal of the clam
and is covered with thin membrane
in this cavity it contains the heart
A tube that is located near the anus
waste goes through this before entering the anus
a small gapping hole
opening for water to enter body
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