EXTERNAL ANTIPARASITICS

They are ____________ (1) compounds, which facilitates their entry into the parasite.

• compounds

• molecules

• elements

• substances

Pyrethroids are synthetic pyrethrin-like substances. Synthetic pyrethroids can be divided into two groups (____________ (2) _____(3) and _____ (4)).

They increase the conduction of _____ (5) channels across neuronal cell membranes, thus increasing _____ (6) entry and producing repeated discharges, continuous nervous excitation, paralysis, and parasite death.

• 5: sodium; 6: calcium

• 5: potassium; 6: magnesium

• 5: chloride; 6: sodium

• 5: calcium; 6: potassium

Pyrethroids are ____________ (7) potent than the natural pyrethrins.

• more

• less

• equally

• not

They are the very ____________ (8) for mammals.

• missing word

• incorrect option 1

• incorrect option 2

• incorrect option 3

They have ____________ (9) toxicity (higher affinity for insect ____________ (10) channels and mammals have ____________ (11) that break them down).

However, they are highly toxic to ____________ (12), because they readily absorb pyrethrin insecticides through their skin and do not have the same ____________ (13) like mammals to readily break down pyrethroids and can easily become poisoned and die.

• insects

• birds

• reptiles

• amphibians

Some ____________ (14) appear sensitive to the more recent ____________ (15) pyrethroids.

In case of intoxication, signs appear within 1-4 hours post-dose: tremors, salivation, ____________ (16), ____________ (17) reflex, ____________ (18) ____________ (19), ____________ (20), ____________ (21) ____________ (22), ____________ (23), ____________ (24).

• muscle twitching, hyperactive, exaggerated, vomiting, diarrhea, difficulty breathing, seizures, coma

• headache, dizziness, blurred vision, nausea, fatigue, confusion, weakness, fainting

• rash, itching, swelling, shortness of breath, wheezing, anaphylaxis, hives, shock

• fever, chills, body aches, cough, sore throat, runny nose, congestion, fatigue

Mild ____________ (25) and ____________ (26) irritants.

• Mild irritants.

• Severe irritants.

• Moderate irritants.

• No irritants.