Final answer:
a) Brown recluse spider A hemorrhagic blister, necrotic ulcer, or target lesion is typically caused by the bite of a Brown recluse spider, which contains potent toxins that can damage red blood cells and tissues.
Step-by-step explanation:
A spider bite that causes a hemorrhagic blister, necrotic ulcer, or target lesion is most commonly associated with the bite of a Brown recluse spider. The venom of this spider contains potent hemotoxins and cytotoxins, including enzymes like collagenase, protease, and phospholipase that can damage red blood cells and impair their ability to clot. While the initial symptoms may include redness, fever, weakness, pain, and nausea, about 10% of victims experience necrosis at the bite site, and in rarer instances, hemolysis may occur.
A) Brown recluse spiderBrown recluse venom possesses hemotoxins and cytotoxins that affect the red blood cells and their ability to clot. In around 10% of victims, necrosis can occur at the bite site, and in even fewer cases, hemolysis can occur.B) Black widow spiderOnly the bite of the female black widow spider is dangerous to humans. The venom can cause pain and sweating at the site of the bite, muscle cramps, headache, nausea, vomiting, and weakness.