Venoms and Poisons Flashcards
What is a biotoxin?
Toxin of biological origin
What are 2 examples of a hemotoxin?
- Pit vipers
2. Viperid snakes
What are 4 examples of a neurotoxin?
- Botulism
- Black widow spider
- Scorpions
- Jellyfish
What are 4 examples of a cytotoxin?
- Mushrooms
- Blue-green algae
- Blister beetles
- Brown recluse spider
What does venemous mean?
Producing a toxin in a highly specialized gland to purposefully deliver that toxin during biting or stinging
What does poisonous mean?
Accumulating a toxin in various body parts so that when ingested delivers toxin un-purposefully
What is an offensive venom?
- Usually associated with the oral pole (fangs)
2. Used for predation/feeding
What is a defensive venom?
- Usually associated with the aboral pole (stingers)
2. Assumed to be beneficial to survival
Which of the following is often of a high molecular weight protein, venom or poison?
Venom
Which of the following is usually absorbed by the GIT, venom or poison?
Poison
What of the following may have enzymatic properties, venom or poison?
Venom
What is the most advanced venom delivery method in the snake?
Solenoglyphs
Which snakes are solenoglyphs?
- Vipers
2. Rattlesnakes
Which snakes are proteroglyphs?
- Cobras
2. Coral snakes
Which snakes are aglyphous?
Python
Snakes have an extra bone in the jaw for “hinging”. What is this bone called and what is its purpose?
Quadrate bone - allows for swallowing prey much larger than the snake’s head
What are 3 snakes in the Elapidae family?
- Cobra
- Krait
- Coral
True or False: Coral snakes are of a limited threat in North America.
TRUE
The neurotoxic polypeptides in Coral snake venom bind reversibly or irreversibly?
Irreversibly
What enzyme is found in the venom of the Coral snake?
Phospholipase-A
True or False: Clinical signs associated with Coral snake bites can be delayed.
TRUE: Up to 12 hours
What are the clinical signs associated with Coral snake bites?
- Ascending flaccid paralysis
- Hypotension
- CNS depression
- Salivation
- Tachycardia
What typically is the cause of death associated with a Coral snake bite?
Respiratory failure
With a Coral snake bite, what would you expect on lab work?
- Hematuria
- Hemoglobinuria
- Myoglobinemia
- Increased CPK
- Increased Alk Phos
- Anemia
How would you treat an exposure to Coral snake venom?
- Antivenom
2. Ventilator support