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Internal Anatomy Worksheet

5 Points
(each error costs 0.25 point)

1.   Match the correct hormone to each endocrine-related event in the insect's body.
 a. Developmental inhibition of imaginal discs
 b. Activation of corpora cardiaca
 c. Onset of apolysis
 d. Yolk production for development of eggs
 e. Stimulation of ecdysis
 f. Initiation of sclerotization
 g. Male production of seminal fluid


2.   Put a check by each organ or structure that is directly stimulated or activated by a neurosecretory cell.
Prothoracic glands Corpora allata
Epidermis Corpora cardiaca
Ovaries and testes Heart


3.   Insects have a(n)    circulatory system.   The heart is located dorsally in the insect's   .


4.   Put a check by each compound that is transported by the blood in an insect's body.
Hormones Nutrients
Oxygen Nitrogenous wastes


5.   Identify the correct sequence of organs or structures that food encounters as it passes through an insect's digestive system:
   First
   Second
   Third
   Fourth
   Fifth


6.   The peritrophic membrane is located in the    where it allows diffusion of    molecules into the blood while protecting the endothelial walls from   .


7.   Malpighian tubules absorb     waste products from the     and convert it to   .


8.   The pyloric valve is a ring of    that regulates movement of    into the   .


9.   Spiracles are    that regulate the flow of    into   .


10.   Taenidia are helical rings of    that reinforce    to prevent their   .


11.   In the list below, type "M" next to each structure found in the male reproductive system, "F" next to each structure found in the female reproductive system, and "B" next to each structure found in both males and females.
  Bursa copulatrix Follicles
  Seminal vesicles Ovarioles
  Spermatheca Vasa deferentia
  Spermathecal gland Oviducts
  Accessory glands Aedeagus


12.   Put a check next to each genotype that represents a female insect:
  XY grasshopper
  XO (haploid) wasp
  WZ moth
  WW caddisfly
  XX honey bee


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