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SAT II BIOLOGY > Arthropods > Flashcards

Flashcards in Arthropods Deck (7)
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1

Arthropods

Insects, arachnids, Crustaceans

2

Body structure

-jointed appendages
-segmented into head, thorax, abdomen
-More sensory apparatus than annelids
-Chitin skeleton
-gills and nephridia

3

Radul

A Movable, tooth-bearing structure that acts like a tongue

4

Digestive tract

-crop and gizzard
-gizzard contains chitin plates
-responsible for removing uric acid(solid)(Malpighan tubules) - adaption to preserve water

5

Malpighian tubules

Where uric acid accumulates and then transported to intestine

6

Circulatory system

-Tubular heart
-open circulatory system where blood leaves the artery and moves through interconnected sinuses/hemocoels
-Blood doesn't carry hemoglobin or oxygen

7

Gas exchange

-Internal respiratory surface
-Air enters the body through spiracles and travels through a system of tracheal tubes into hemocoels/sinuses, where diffusion occurs
-oxygen is carried by hemocyanin(copper core)