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Arthropod (Crab) - ✔✔...
Carapace - ✔✔A hard shell that covers and protects it. It is also made out of chitin.
Cephalothorax - ✔✔The "body" of the crab which consists of a fusion of the head and the
thorax.
Pereopods - ✔✔Serve multiple purposes, ranging from capturing prey to facilitating
locomotion.
Chelipeds - ✔✔Used to obtain food and also for defense.
Dactyl - ✔✔It helps the crab adapt to walking patterns. Serves as a walking leg.
Manus (aka propodus) - ✔✔Makes up the immovable finger and palm.
Maxillipeds - ✔✔Used to manipulate food, assist in cleaning the eyes, and aid in respiration.
Mandibles - ✔✔"The jaws" are used to break down food into smaller pieces, allowing them
to digest it.
Apron/abdomen - ✔✔It is used to determine its sex. For males, it is a narrow T-shape, and
for a mature female, it is a broader and rounder apron. For an immature female, it is more of
a broader triangle-shaped apron.
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Male pleopods - ✔✔Males have 2 pairs of pleopods, under the front of the abdomen, and are
used to transfer spermatophores into the genital pores.
Female pleopods (Swimmerets) - ✔✔Females have four pairs, which, during spawning,
females fertilize their eggs with the stored sperm and excrete them onto their swimmerets.
Gonopores - ✔✔The male gonopores are used to transfer sperm to the female, and the
female gonopores are used to receive the sperm and then store it later for fertilization of
their eggs.
Gills - ✔✔Used for respiration. As water moves over the gills, oxygen moves from the water
into the hemolymph
Heart - ✔✔Allowing for the exchange of nutrients, oxygen, and waste.
Ostia - ✔✔It allows hemolymph to enter the heart from the body, and then it has openings
that prevent backflow.
Stomach - ✔✔Aids in the breakdown of the food that can be absorbed into the branches of
the hepatopancreas.
Digestive glands/ Hepatopancreas - ✔✔It is a gland that acts like the liver and pancreas in
humans; it produces digestive enzymes and also filters hemolymph.
Anus - ✔✔Waste is excreted.
Testes and ovaries - ✔✔He testes produce spermatophores, while on the other hand, the
ovaries receive the sperm, and sometimes the females can hold onto them for up to a year.
Arthropod (Crab) - ✔✔...
Carapace - ✔✔A hard shell that covers and protects it. It is also made out of chitin.
Cephalothorax - ✔✔The "body" of the crab which consists of a fusion of the head and the
thorax.
Pereopods - ✔✔Serve multiple purposes, ranging from capturing prey to facilitating
locomotion.
Chelipeds - ✔✔Used to obtain food and also for defense.
Dactyl - ✔✔It helps the crab adapt to walking patterns. Serves as a walking leg.
Manus (aka propodus) - ✔✔Makes up the immovable finger and palm.
Maxillipeds - ✔✔Used to manipulate food, assist in cleaning the eyes, and aid in respiration.
Mandibles - ✔✔"The jaws" are used to break down food into smaller pieces, allowing them
to digest it.
Apron/abdomen - ✔✔It is used to determine its sex. For males, it is a narrow T-shape, and
for a mature female, it is a broader and rounder apron. For an immature female, it is more of
a broader triangle-shaped apron.
, 2
Male pleopods - ✔✔Males have 2 pairs of pleopods, under the front of the abdomen, and are
used to transfer spermatophores into the genital pores.
Female pleopods (Swimmerets) - ✔✔Females have four pairs, which, during spawning,
females fertilize their eggs with the stored sperm and excrete them onto their swimmerets.
Gonopores - ✔✔The male gonopores are used to transfer sperm to the female, and the
female gonopores are used to receive the sperm and then store it later for fertilization of
their eggs.
Gills - ✔✔Used for respiration. As water moves over the gills, oxygen moves from the water
into the hemolymph
Heart - ✔✔Allowing for the exchange of nutrients, oxygen, and waste.
Ostia - ✔✔It allows hemolymph to enter the heart from the body, and then it has openings
that prevent backflow.
Stomach - ✔✔Aids in the breakdown of the food that can be absorbed into the branches of
the hepatopancreas.
Digestive glands/ Hepatopancreas - ✔✔It is a gland that acts like the liver and pancreas in
humans; it produces digestive enzymes and also filters hemolymph.
Anus - ✔✔Waste is excreted.
Testes and ovaries - ✔✔He testes produce spermatophores, while on the other hand, the
ovaries receive the sperm, and sometimes the females can hold onto them for up to a year.
