Internal Insect Systems - Purdue Extension Entomology

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Direct flight muscles • Muscles are directly articulated to the wings • Found in more primitive orders – Paleoptera • Odonata • Ephemeroptera - and Blattodea Illustration Source: Hooper Virtual Paleontological Museum
Indirect flight muscles Illustration Source: Hooper Virtual Paleontological Museum • Muscles are NOT directly articulated to the wing • Contraction of longitudinal and dorsoventral muscles alternately contract to depress and relax the thoracic tergum. • Flight is powered by force of muscle contraction and tergum distortion. • Direct muscles attached to wing serve as minor adjustors • Neopterous Orders Only
Page 1 and 2: What’s under the hood????
Page 3: Flight System • Direct/Indirect F
Page 7 and 8: Insect Digestive System Generalized
Page 9 and 10: Key Parts of Foregut • Mouth -ing
Page 11 and 12: Key Parts of Hindgut Malpighian tub
Page 13 and 14: Insect Circulatory System • Open
Page 15 and 16: Insect Respiratory System Spiracles
Page 17 and 18: Key Parts of Respiratory System •
Page 19 and 20: Key Points for Nervous System • 1
Page 21 and 22: Insect Nervous System Tutorial http
Page 23 and 24: Male Reproductive Organs testes acc
Page 25: Insect Reproductive System Female M

Internal Insect Systems - Purdue Extension Entomology

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