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Questions and Answers
Which type of transmission involves the disease agent undergoing both developmental change and multiplication in number?
Which type of transmission involves the disease agent undergoing both developmental change and multiplication in number?
What is the characteristic of propagative transmission?
What is the characteristic of propagative transmission?
Which of the following is an example of a disease transmitted through transstadial transmission?
Which of the following is an example of a disease transmitted through transstadial transmission?
What is the characteristic feature of Arachnida?
What is the characteristic feature of Arachnida?
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Which of the following is an example of a Myriapoda?
Which of the following is an example of a Myriapoda?
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What is the characteristic feature of Insecta?
What is the characteristic feature of Insecta?
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Which of the following is an example of a disease transmitted through transovarian transmission?
Which of the following is an example of a disease transmitted through transovarian transmission?
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What is the characteristic feature of Crustacea?
What is the characteristic feature of Crustacea?
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What is the primary focus of Medical Entomology compared to Entomology?
What is the primary focus of Medical Entomology compared to Entomology?
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What is the term for the fear of insects?
What is the term for the fear of insects?
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Which of the following is an example of mechanical transmission?
Which of the following is an example of mechanical transmission?
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What is the term for the infestation of live tissues by fly larvae?
What is the term for the infestation of live tissues by fly larvae?
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What is the term for the condition where a person believes they are infested with parasites?
What is the term for the condition where a person believes they are infested with parasites?
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Which of the following is an example of direct contact transmission?
Which of the following is an example of direct contact transmission?
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What is the term for the itchy, raised patches on the skin caused by an allergic reaction to insect bites?
What is the term for the itchy, raised patches on the skin caused by an allergic reaction to insect bites?
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Which of the following is NOT a type of negative interaction with arthropods?
Which of the following is NOT a type of negative interaction with arthropods?
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Which of the following insects has a pair of antennae and a pair of compound eyes?
Which of the following insects has a pair of antennae and a pair of compound eyes?
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What is the primary function of Malphigian tubules in insects?
What is the primary function of Malphigian tubules in insects?
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Which of the following is NOT a type of insect?
Which of the following is NOT a type of insect?
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Which of the following insects is a vector of dengue fever?
Which of the following insects is a vector of dengue fever?
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What is the primary function of book-lungs in arachnids?
What is the primary function of book-lungs in arachnids?
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Which of the following is a characteristic of the class Arachnida?
Which of the following is a characteristic of the class Arachnida?
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Which of the following is a medically important insect?
Which of the following is a medically important insect?
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Which of the following is a type of arachnid?
Which of the following is a type of arachnid?
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Study Notes
Introduction to Medical Entomology
- Medical Entomology is a specialization of Entomology that deals with insects that are medically important.
- Size does not matter, as mosquitoes have killed more people than any other living thing in the world.
Negative Interactions with Arthropods
- Delusional Parasitosis (DP) and Entomophobia
- Envenomation
- Bites and Piercing
- Myiasis
- Allergic reactions
- Urticaria (Hives)
Modes of Transmission
- Direct contact: Arthropods are directly transmitted from man to man through close physical contact.
- Mechanical transmission: The disease agent is mechanically carried by the arthropod.
- Biological transmission:
- Propagative: The disease agent multiplies in number in the body of the arthropod without undergoing developmental change.
- Cyclo-propagative: The disease agent undergoes both developmental change and multiplies in number.
- Cyclo-developmental: The disease agent undergoes only developmental change (no multiplication).
- Transovarian transmission: The disease agent is passed onto the next generation through the eggs of the insect.
- Transstadial transmission: The disease agent is passed from one stage of life cycle to another and then transmits the disease to man.
Taxonomical Classification of Arthropods
- Arthropods:
- Insecta (6 legs, exoskeleton, 3 body parts, mostly terrestrial and some aerial)
- Arachnida (8 legs, exoskeleton, 2 body parts, mostly terrestrial)
- Crustacea (10 legs, exoskeleton, 2 body parts, mostly aquatic)
- Myriapoda (lots of legs, exoskeleton, lots of segments, mostly terrestrial)
- Class: Insecta
- Order: Diptera (flies), Order: Coleoptera (beetles), Order: Siphonaptera (fleas), Order: Hemiptera (true bugs), Order: Phthiraptera (lice)
- Examples of medically important insects: mosquitoes, sandflies, tabanidae (horse fly), glossinidae (tsetse fly), muscidae (house fly), sarchophagidae (flesh fly)
- Class: Arachnida
- Examples: Aranea (spider), Palamnaeus (scorpion)
- Class: Crustacea
- Examples: ticks, mites (scabies mites, leptotrombidium sp., dermatophagoides sp., demodex folliculorum)
- Order Acarina
- Examples: ticks, mites
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Description
This quiz covers the basics of medical entomology, including general introduction, mode of transmission, and taxonomical classification. It's designed for students in the Faculty of Health Science at Universiti Kebangsaan Malaysia.
