Crayfish terminology

Identify #1 structure

One of the pair of long sensory appendages on the head that function in taste, touch, and smell.

• antennae

• cephalothorax

• chilapeds

• walking legs

Identify structure #3

The first pair of walking legs, bearing large

claws used in defense, offense, and predatory

feeding.

• Cephalothorax

• Antennae

• Swimmerettes

• Chelipeds

Identify structure #7

Fused head and thorax, covered by the

carapace.

• Antennae

• cephalothorax

• abdomen

• chilapeds

Tags

NGSS.MS-LS1-3

Crayfish use ____ to grab food and protect themselves

• Antenna

• segments

• chilapeds

• cephalothorax

What is the structure labeled 2

Pair of biramous (two-branched) sensory

appendages on the head that function in taste,

touch, balance, and equilibrium.

• Antenna

• antennules

• cephalothorax

• abdomen

What is the structure labeled 6

The clearly segmented body region of a

crayfish, located posterior to the cephalothorax.

• Antenna

• antennules

• cephalothorax

• abdomen

What is the structure labeled 4

Stalked, compound organ of

vision, on each side of the head.

• Antenna

• eye

• cephalothorax

• abdomen

What is the structure labeled 10

One of the paired lateral appendages that,

together with the telson, form the tail. Along

with the telson, they allow rapid and directed

movement.

• uropod

• compound eye

• cephalothorax

• abdomen

Tags

NGSS.MS-LS4-2

How many Chilapeds do Crayfish have?

• 4

• 5

• 2

• 1

How many pair of swimmerets do crayfish have?

• 4

• 5

• 2

• 10