1. U4C Good Morning  11/1 6 Please pick up Purple unit sheet Folder
Opening: What are THREE new body parts you learned about yesterday? What do these parts do?
Work Session: Finish crayfish structure/function activity and take notes on crustaceans.
Closing: Review crayfish anatomy 6

2. U4C Good Morning  11/2 Turn in Crayfish Drawing
Please pick up your folder & complete the Opening Journal
Opening Journal: What traits do ALL ARTHROPODS share? List as many as you can think of.
Work Session: Get out notes and get ready for dissection
Closing: Review Crayfish dissection
Quiz tomorrow over crustacean vocab and crayfish anatomy

3. Unit 4C Journal #3 11/9
Should you be afraid of any of these spiders? Explain why/why not.

4. Your Answers… Black Widow toxin is 15x stronger than rattlesnake venom
Black Widow is small and found in the south
Brown recluse is in the south
Brown recluse makes skin tear open
Sydney Funnel Web is most aggressive
Sydney Funnel Web can affect nervous system & breathing, and can kill you.
Brazilian Wandering spider most venomous
Brazilian Wandering spider is making more of an appearance in US- coming in on shipping containers

5. Reality… Your chances of being bitten by any of these is slim.
The brown recluse takes months to make enough venom to kill its prey, so chances are, it won’t waste it on you – something way too big for it to kill – because it would go hungry for a few months. - Dr. Nancy Hinkle Veterinary UGA
Your chances of dying from one of these is…

6. U4C Quiz Time! 11/3 Look for new seats out in hallway
Turn in crayfish dissection lab!
Pick up a remote and a privacy screen
Let’s see what you’ve absorbed about crustaceans!

7. Unit 4C JOURNAL #2 10/10
What is the difference between millipedes and centipedes? Provide at least 3 differences and 2 similarities.

8. Today- 2/22
If you DID NOT take Arthropod Story webquest quiz last class you will take today. Get iRespond remote.
Turn in Arthropod Story webquest, coloring and/or vocabulary.
Journal: Other than walking, how are walking legs (periopods) important to crayfish?

9. Unit 4C Journal #1 11/1
What adaptations do crayfish have for respiration? Explain how they help with getting oxygen.

10. Good Morning! Mon 3/26/18 Pick up handouts from SILVER CART.
Tests will be done by tomorrow.
TODAY: Crayfish Str/Fxn and Notes
TOMORROW: Crayfish Dissection

11. What do all these animals have in common?

12. Subphylum Chelicerata
Kingdom Animalia
Phylum Arthropoda
Subphylum Chelicerata
Subphylum Crustacea
Lobster
Crab
ShriMp
Crayfish
Barnacles
Isopods
Class MerostoMata
Horseshoe crab
Class Arachnida
spiders
Subphylum UniraMia
Class Chilopoda
centipedes
Class Hexapoda
insects
Class Diplopoda
Millipedes

13. General Arthropod Characteristics
Arthropod means “jointed foot”
Paired jointed appendages
Segmented bodies
TagMatization- body regions have specific functions
a. Head- sensory/feeding
b. Thorax- locomotion
c. Abdomen- visceral functions

14. Exoskeleton
a. Support & protection
b. Prevents water loss
c. Two layers
1. Epicuticle- lipoprotein; imperMeable to water & pesticides
2. Procuticle- chitin; thick, tough, leathery protein

15. Grow by shedding exoskeleton- ecdysis (molting)
Ventral nervous system
Open circulatory system
CoMplete digestive system w/ mouth & anus

16. SUBPHYLUM
CRUSTACEA

17. Lobsters, shriMp, crab, barnacles, copepods, isopods (rolly polly)

18. Crayfish Anatomy Body regions
Cephalothorax- fused head & chest region. Covered by hard, sclerotized carapace.
AbdoMen- has some swimming appendages and visceral organs. In some, takes form of muscular tail.

19. Paired appendages- Head:
1st Antennae- long; sense, feed, taste
2nd Antennules- short; sense, feed, taste
3rd Mandibles- chewing & grinding
4th, - 6th maxillae- small, hair-like; respiration, food handling, taste
7th, 8th maxillipeds- larger than Maxillae, food handling, taste

20. Paired appendages- Thorax:
9th chelipeds- “claw”; food capture & defense.
10th- 13th periopods- walking legs for moveMent

21. Paired appendages- Abdomen:
Pleopods- hair-like swimmerets may help with swimming; First 2 pairs at junction of thorax & abdomen are used to determine gender & for sexual reproduction
Telson- tail like structure at end of abdomen. Anus located here.
Uropods- 2 flipper-like structures on either side of abdomen (total of 4 uropods); aid in steering/swiMming

23. Digestion/Feeding
1. Scavengers & predators- eat other invertebrates, some plants
2. Foregut/stoMach- enlarged part of stomach in cephalothorax;contains tooth-like structures (gastric teeth) for grinding food.
3. Digestive gland- secrete enzymes into stomach & store food.
4. Intestine- embedded in muscular abdomen.
5. Anus

24. Circulation
Open circulatory systeM
Have heart with short vessels

25. Respiration Gills- feathery; under carapace
Maxillae- push water over gills while resting.
Walking legs- push water over gills while Moving.

26. Excretion
1. Green glands- kidney-like organs located behind 2nd pair of antennae.
2. Renal pore- amMonia liquid waste released through this pore in front of head.

27. Nervous & Sensory System
Cerebral ganglion- fused trilobed brain
Ventral nerve cord- runs along belly with small ganglia masses
Compound eyes- on movable stalks
Setae- hair-like on Mouth & antennae; detect food & pheromones

28. Reproduction Dioecious Mating occurs after females molt in fall.
Male inseminates female using 2 stiff anterior pleopods.
In the spring, as the female passes eggs out of her body, they become fertilized.
Eggs attach to pleopods on abdoMen where they stay until hatching.

30. Economical/Environmental Importance
Part of the Food chain
Control animal populations
Major source of protein for many regions of the world’s human population.
DecoMposers (rolly polly)

31. The green glands are located in the ___ region.
The structure responsible for excretion in crayfish is
a. Kidney b. Green gland c. cheliped
The pincers used for food capture & defense are called
a. Pleopods b. Chelipeds c. tweezers
The large finger-like structures around the mouth that are used for tasting & food handling are
Maxillipeds b. Mandibles c. Telson
The green glands are located in the ___ region.
a. heard b. abdomen c. tail fan
The telson is where you would find the
Green glands b. Anus c. chelipeds
Which two structures are important in respiration?
Maxillae & walking legs
Maxillae & pleopods
Pleopods & walking legs

32. 7. Antennae 10. Abdomen
8. Antennules 11. Pleopods
9. Carapace 12. digestive gland

33. For 7-11 use the diagrams of the external & internal parts of crayfish
7. Periopods 10. Chelipeds
8. Antennules 11. Pleopods
9. Carapace

35. For 7-11 use the diagrams of the external & internal parts of crayfish
7. Periopods 10. Chelipeds
8. Antennules 11. Pleopods
9. Carapace