2019 Mod12 Flashcards
Exoskeleton
Hey body covering typically made of chitin, that provide support and protection
Molt
To shed an old outer covering so that you can be replaced with a new one
Thorax
The body region between the head and the abdomen
Cephalothorax
A body region composed of the head and thorax fused together
Compound eye
And I am made of many lenses, each with a very limited scope
Simple eye
An eye with only one lens
Open circulatory system
A circulatory system that allows the blood to flow out of the blood vessels and into the various body cavities so the cells are in direct contact with the blood
Statocyst
The organ of balance in a crustacean
Gronad
A general term for the organ that produces gametes
Complete metamorphosis
Insect development consisting of four stages: egg, larvae, pupa, and adult
Incomplete metamorphosis
Insect development consisting of three stages egg, nymph, and adult
Name five common characteristics among arthropods
- An exoskeleton
- Body segmentation
- Jointed appendages
- A ventricle nervous system
- An open circulatory system
Identify the structures clockwise around a crayfish a-j
a. Antennae
b. Antennules
c. Cephalothorax
d. abdomen
e. telon
f. uropods
g. swimmerets
h. carapace
i. walking legs
j. chelipeds
Identify the organs in a crayfish clockwise
A-N
A. Eye B. brain ganglia C. stomach D. gronad E. heart F. Pericardial sinus G. Intestine H. anus I. nerve cord J. digestive glands K. sternal sinus L. mouth M.esophagus N.green gland
Explain the blood flow of a crayfish, starting with the Pericardial sinus
From there Pericardial sinus The blood and goes to the heart then threw one of three tubes to float out into body cavities that then channel the blood through the gills in Green glands back to the Pericardial sinus
What purpose does the green gland serve
It cleans the blood
What structure besides the gills and gill chamber are vitally important for respiration in the crayfish
The swimmerets and the maxillae
What happens when a crayfish loses a limb
Regeneration of that limb
Where do the fertilized eggs of a crayfish go
To the swimmerets
Why do arthropods molt
Because they’re all exoskeleton got too tight so they needed room for growth
What to appendages are responsible for taste and touch in a crayfish
The antennules and in antenna
What five characteristics set arachnids apart from other arthropods
- 4 pairs of walking legs
- cephalothorax
- Usually four pairs of simple eyes
- No antenna
- book lungs
What are three basic types of worms that spider spin
Sheet, warm, tangled webs
Do you are spiders use their silk to spin webs
No
