Crayfish Labeling

1

1

antennae

2

antennule

3

rostrum

4

eye

5

brain

6

stomach

7

heart

8

pericardial sac

9

ostium

10

testis

11

intestine

12

uropod

13

telson

14

anus

15

swimmeret

16

copulatory swimmeret

17

vas deferens

18

ganglion

19

digestive gland

20

mouth

21

antennal gland