
广Medical Arthropod
Medical Arthropod

MEDICALARTHROPODArthropods which has medicalimportant, they can act as bothMedicalarthropodparasites and vectorsFleaplague(鼠疫)VectorFlyMyasis,Cholera(霍乱)malaria(症疾)Mosquito

Characteristics of Arthropoda
Characteristics of Arthropoda

Metamerism(体节性)Metamerism- body is segmented.ESSS
Metamerism (体节性) • Metamerism- body is segmented

Exoskeleton(外骨骼)Exoskeleton- body covered with a hardexternal skeleton
Exoskeleton(外骨骼) • Exoskeleton- body covered with a hard external skeleton

Bilateral SymmetryBilateral Symmetry- body can be dividedinto two identical halves1/21/2
Bilateral Symmetry • Bilateral Symmetry- body can be divided into two identical halves

Jointed Appendages Jointed Appendages- each segment mayhave one pair of appendages, such as:legswings mouthpartsJointedAppendage
Jointed Appendages • Jointed Appendages- each segment may have one pair of appendages, such as: • legs • wings • mouthparts

Open Circulatory System: Open Circulatory System- blood washesover organs and is not entirely closed byblood vessels. Our system is a closed oneCirculatory SystemAccessoryPulsatileOrganHeartAorta
Open Circulatory System • Open Circulatory System- blood washes over organs and is not entirely closed by blood vessels. Our system is a closed one

Life cycle:The life cycle of arthropods is divided into two maintypes:1. Incomplete metamorphosis:Egg → Nymph → Adult.(Arachnid type: EggLarvaNymph → Adult)2.Complete metamorphosissEgg → Larva → Pupa → Adult
Life cycle: The life cycle of arthropods is divided into two main types: 1. Incomplete metamorphosis: Egg → Nymph → Adult. (Arachnid type: Egg→Larva→Nymph → Adult). 2. Complete metamorphosis: Egg → Larva → Pupa → Adult

Five classes ofArthropod have medicalClassificationimportantInsecta:mosquito,fly,sandfly,flea,louce,cockroach, etcArachnid:ticks,mites,spiders,etcCrustacea:crab, shrimp,cyclops,copepod,etcChilopoda(唇足纲):centipede(蜈)Diplopoda(倍足纲):millipede(马陆)