Question

29. How does leech suck blood from the host?​

Answer 1

Answer:

Leeches are blood-sucking hermaphroditic parasites that attach to vertebrate hosts, bite through the skin, and suck out blood. When leeches feed, they secrete an anticoagulant (hirudin), which helps them get a full meal of blood. This is the first report of leech removal from external auditory canal. Previous leech involvement cases were explained in nasopharynx, larynx, pharynx, eye, and gastrointestinal tract.

Leech is one of the external sanguivorous parasites contributing to the reduction in productivity of livestock in different part of the World. Leeches bite the skin of the host and allow copious flow of blood preventing clot by hirudin. The bite is not painful, but the wounds may bleed for a long time and the clinical signs can be seen following this blood loss.

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Answer 2

Answer:

Answer. Answer: Leeches are blood-sucking hermaphroditic parasites that attach to vertebrate hosts, bite through the skin, and suck out blood. ... Leeches bite the skin of the host and allow copious flow of blood preventing clot by hirudin