Biology 251: Lecture 6Fall 1996

Major Life Systems II

  1. Circulation
    1. Open system
    2. Dorsal vessel
    3. Dorsal and ventral diaphragms
    4. Hemolymph
      1. Watery fluid
      2. Functions

  2. Fat body
    1. Dynamic tissue
    2. Functions

  3. Thermoregulation
    1. Ectotherms
    2. Small insects
    3. Large insects
    4. Behavior
      1. Cold temperatures
      2. Warm temperatures

  4. Digestion and Absorption
    1. Foregut
      1. Buccal cavity
      2. Pharynx
      3. Esophagus
      4. Crop
      5. Proventriculus
    2. Midgut
      1. Ventriculus
      2. Gastric caeca
    3. Hindgut

  5. Excretion
    1. Insect problem
    2. Malpighian tubules
      1. Distal end
      2. Proximal end
    3. Rectum


"We must accept finite disappointment, but we must never lose infinite hope."
Martin Luther King, Jr.