Lab: Horseshoe Crab Anatomy

Question 1

Function of simple eyes

Answer 1

only see shadows and light

Question 2

Function of hinge

Answer 2

connects prosoma to opisthosoma; allows bending

Question 3

Function of Opisthosoma

Answer 3

contains abdomen, gills, and 6 pairs of spines; protection

Question 4

Function of telson

Answer 4

used for digging and turn itself back over

Question 5

Function of compound eye

Answer 5

image seeing eyes

Question 6

Function of carapace

Answer 6

provides protection

Question 7

Function of chelicera

Answer 7

Helps push food into mouth

Question 8

Function of Gnathobase

Answer 8

Manipulating and Grinding food

Question 9

Function of Chilaria

Answer 9

Help manipulate food

Question 10

Function of Gential Operculum

Answer 10

Houses genital pores; where eggs and sperm are released

Question 11

Function of Abdomen

Answer 11

Have muscles for movement and houses gills

Question 12

Function of Anus

Answer 12

Acts as excretion site; attached to rectum

Question 13

Function of Telson/Tallspine

Answer 13

Helps flip over when overturned

Question 14

Function of Gill Opercula

Answer 14

Serve as cover for other gills; covers genital pores

Question 15

Function of Book Gills

Answer 15

Act as paddles to propel juveniles thru water

Question 16

Function of mouth

Answer 16

Food intake

Question 17

Function of Pedipalps

Answer 17

Male only; help to clasp carapace of female during mating