How does the spitting cobras poison effect the nervous system?

Answer 1

Well, spitting cobra venom exposure to the eyes causes severe pain, double vision, blindness, shortness of breath and a few other symptoms that depend on the species. The following decribes the symptoms when bitten by a spitting cobra :
Pathophysiology: Cobra envenomation is an extremely variable process. The envenomations of some species cause profound neurological abnormalities (eg, cranial nerve dysfunction, abnormal mental status, muscle weakness, paralysis, and respiratory arrest). With other snakes, local tissue damage is of primary concern.

Necrosis is typical of bites by the African spitting cobras (Naja nigricollis, Naja mossambica, Naja pallida, and Naja katiensis), Naja atra (the Chinese cobra), Naja kaouthia (monocellate cobra), and Naja sumatrana (Sumatran spitting cobra). Although the venoms of these cobras contain neurotoxins, necrosis often is the chief or only manifestation of envenoming in humans. Occasionally, a combination of neurologic dysfunction and tissue necrosis is observed.
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An additional, unique form of toxicity with some Asian and African species is acute ophthalmia, which occurs when venom is spit into the eyes. Spitting cobras can spit venom into a person's eyes from up to 3 m away. Immediate and intense pain results, with blepharospasm, tearing, and blurring of vision. Systemic toxicity does not occur with eye exposure, but corneal ulcerations, uveitis, and permanent blindness have been reported in untreated cases.




History: The onset of symptoms and signs following a cobra bite can be extremely variable.

Immediate, local pain (almost always present)
Soft tissue swelling (may be progressive)
Neurologic findings, which may begin early and be rapidly progressive (in anecdotal cases, victims have suffered respiratory arrest in a matter of minutes) or may be delayed in onset as long as 24 hours
Alteration of mental status (eg, drowsiness, occasionally with euphoria)
Complaints related to cranial nerve dysfunction, such as ptosis (often one of the earliest neurotoxic findings), ophthalmoplegia, dysphagia, and dysphasia
Profuse salivation, nausea, vomiting, and abdominal pain
Paresis of neck and jaw muscles and generalized muscular weakness followed by flaccid paralysis
Shortness of breath, respiratory failure (muscular paresis and accumulated secretions)
Chest pain or tightness
Eye pain, tearing, blurred vision (with eye exposure to venom from spitting cobras)
Physical:

Impending respiratory failure
Respiratory distress or weakness
Cyanosis
Neurologic dysfunction
Altered mental status
Ptosis (may be the earliest sign of systemic toxicity)
Generalized weakness or paralysis
Cardiovascular collapse
Hypotension
Tachycardia or bradycardia
Soft tissue edema
Signs of necrosis usually appear within 48 hours of the bite.
The area around the fang punctures darkens.
Blistering may follow.
Necrosis is usually confined to the skin and subcutaneous tissue but may be quite extensive.
A putrid smell is characteristic.
Acute inflammation of the eye follows venom-spitting exposure and is characterized by ocular congestion, edema of the conjunctiva and cornea, and a whitish discharge.

Answer 2

African Spitting Cobra

Answer 3

I always thought the spitting was to blind it's prey.

Answer 4

It mobilizes its prey after it has bitten it ,then it slowly releases toxins
into the preys neurological system.

Answer 5

It doesn't. Cobras do not have poison, they have venom. It is mainly used to blind.

Answer 6

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