BIOL11300 Lecture Notes - Lecture 3: Hemolymph, Mesothorax, Metathorax
18 Mar 2016
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Document Summary
Digestive tract, organs for excretion, reproductive tract cerci: tail - like appendages in the abdomen that have sensory functions adeagus: penis ovipositor: allows female insect to lat eggs into soil, plant stems, or other materials. Open tracheal system: the way that insects do gas exchange with minimal water loss. Tracheoles: tiniest tubes that diffuse oxygen straight into tissues. Connects al of the living tissues to the insect"s own supply of oxygen - containing air. Air is drawn into the body through openings called spiracles. Taenidia: sprial thickenings that reinforce the trachea. With each branching the tube becomes narrower and at the end, a blind sac called the tracheal is formed. Sometimes air sacs are used for sound production. Passive diffusion: the process by which most movement of gasses occurs. Active ventilation: rhythmic pumping of the abdominal system to move air through tracheal system. Bees and active insects do this sometimes. Closed tracheal system: the tracheal system for most aquatic insects.
