Environmental and Occupational Hazards — Flashcards

Flashcard 21: Direct current (d.c.) is _____ dangerous than alternating current (a.c.).

Answer: less (less/more)

Flashcard 22: Identify the snake characterized by: - Three rows of dark, chain-like diamond/oval spots on the back - A triangular head covered with small scales - Known for causing vasculotoxic envenomation and acute renal failure

Answer: Russell's Viper (Daboia russelii)

Extra: Russell's Viper is one of the 'Big Four' venomous snakes in India. Key features: - Morphological: Three rows of chain-like diamond/oval spots, triangular head, small head scales (not shields). - Venom: Vasculotoxic (hemotoxic). - Clinical: Bleeding from site and systemic orifices, DIC, acute renal failure, and local tissue necrosis.

Flashcard 23: Direct current (d.c.) is _____ dangerous than alternating current (a.c.).

Answer: less

Flashcard 24: _____ are found to be able to control injection of venom when they are biting

Answer: Elapidae (Family of snakes)

Flashcard 25: Identify the snake characterized by a laterally compressed, oar-shaped tail:

Answer: Sea snake

Extra: Sea snakes (Hydrophiidae) are characterized by a laterally compressed, oar-shaped tail adapted for swimming. Their venom is primarily myotoxic, leading to muscle necrosis and myoglobinuria.

Flashcard 26: Identify the snake: Green body, triangular head, and heat-sensing pits between the eye and nostril.

Answer: Common green pit viper

Flashcard 27: Compressed tail is seen in _____ snakes (poisonous/non-poisonous)

Answer: Poisonous

Flashcard 28: Identify the snake based on these features: Possesses an expandable hood and a spectacle mark on the dorsal side of the hood.

Answer: Common cobra (Naja naja)

Extra: The Common Cobra is a neurotoxic snake. Key morphological features include: 1. Expandable hood. 2. Spectacle mark (monocellate or binocellate) on the dorsal aspect of the hood. 3. The 3rd supralabial scale touches both the eye and the nasal shield.