Florida State Paramedic Practice Exam

Which snake's venom is primarily composed of neurotoxins?

1. Rattlesnake

2. Coral snake

3. Copperhead

4. Garter snake

The correct answer is: Coral snake

The coral snake's venom is primarily composed of neurotoxins, which are substances that affect the nervous system. Neurotoxins can disrupt communication between nerves and muscles, leading to paralysis or impaired motor function. The venom of the coral snake works by binding to acetylcholine receptors, blocking the neurotransmitter's action, which is essential for muscle contraction. This mechanism is distinct from other snake venoms, which may contain hemotoxins or cytotoxins that primarily affect blood cells or tissues rather than directly interfering with nerve function. Neurotoxic envenomation from a coral snake can result in symptoms such as difficulty breathing, muscle weakness, and even respiratory failure if not treated promptly, highlighting the importance of recognizing and responding to bites from this species.