Lesson 23 Terms Flashcards
Abdomen
the posterior segment of an arthropod
Aedeagus
organ that allows males to secrete sperm
Antennae
organs that touch, smell, and sometimes hear
Book lungs
respiratory organs with many thin layers where air circulates and the exchange of gasses takes place—oxygen passes into a blood filled chamber
Carapace
a single exoskeletal plate that cover the cephalothorax
Chelicerae
a short pair of appendages used to capture and crush prey
Chelipeds
claws on the first pair of legs used for grooming, fighting, and capturing prey
Compound eyes
allow the animal to see in many directions at once
Exoskeleton
hardened outer covering of the body
Jointed appendages
Most distinguishing characteristics of arthropods. Structures such as a legs, wings, or antennae that extend from the body wall of an arthropod and enable them to move and grasp objects
Labium
lower lip
Mandibles
mouthparts of arthropods used to crush and tear apart food
Maxillae
upper jaw; used to chew food
Metamorphosis
change of form;
2 types - Complete and incomplete
Molt
to shed hair, skin, or an outer layer periodically
Ovipositor
organ that allows females to deposit eggs
Pedipalps
used for sensing and feeding; located between chelicerae and the first pair of legs which may contain pincers
Saprophytes
eat decaying leaves and plant matter
Simple eyes
detect the presence of light
Spermatophore
packet of sperm
Spinnerets
structures located at the tip of the abdomen, used to spin silk
Spiracles
small pores on each segment allowing air to enter the body
Swimmerets
appendages used for swimming and reproduction, located on the abdomen
Telson
fan shaped tail at the end of the body
Thorax
the region between head and abdomen
Trachea
delivers gasses throughout the body
