Insect Internal Anatomy

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Last updated 5:12 PM on 9/14/26

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29 Terms

1

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<p>Respiratory: What are the small openings along the insect’s side?</p>

Respiratory: What are the small openings along the insect’s side?

Spiracles

<p>Spiracles</p>

2

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<p>Respiratory: What tubes run inward from the spiracles?</p>

Respiratory: What tubes run inward from the spiracles?

Spiracular tracheae

<p>Spiracular tracheae</p>

3

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<p>Respiratory: What branched tubes spread around the internal organs?</p>

Respiratory: What branched tubes spread around the internal organs?

Visceral tracheae

<p>Visceral tracheae</p>

4

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<p>Respiratory: What are the large pink balloon-shaped structures?</p>

Respiratory: What are the large pink balloon-shaped structures?

Air sacs

<p>Air sacs</p>

5

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<p>Digestive: What digestive structure is directly behind the mouth?</p>

Digestive: What digestive structure is directly behind the mouth?

Pharynx

<p>Pharynx</p>

6

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<p>Digestive: What is the large pale-green food-storage pouch near the front?</p>

Digestive: What is the large pale-green food-storage pouch near the front?

Crop

<p>Crop</p>

7

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<p>Digestive: What glands are below the crop near the front?</p>

Digestive: What glands are below the crop near the front?

Salivary glands

<p>Salivary glands</p>

8

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<p>Digestive: What fingerlike pouches sit at the beginning of the midgut?</p>

Digestive: What fingerlike pouches sit at the beginning of the midgut?

Gastric caeca

<p>Gastric caeca</p>

9

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<p>Digestive: What tangled tubes connect near the midgut-hindgut junction?</p>

Digestive: What tangled tubes connect near the midgut-hindgut junction?

Malpighian tubules

<p>Malpighian tubules</p>

10

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<p>Digestive: What is the final section at the rear of the digestive tract?</p>

Digestive: What is the final section at the rear of the digestive tract?

Rectum

<p>Rectum</p>

11

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<p>Digestive: What is the front digestive section, from mouth through crop?</p>

Digestive: What is the front digestive section, from mouth through crop?

Foregut

<p>Foregut</p>

12

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<p>Digestive: What central digestive section performs most digestion and absorption?</p>

Digestive: What central digestive section performs most digestion and absorption?

Midgut

<p>Midgut</p>

13

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<p>Digestive: What rear digestive section reabsorbs water and forms waste?</p>

Digestive: What rear digestive section reabsorbs water and forms waste?

Hindgut

<p>Hindgut</p>

14

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<p>Male reproductive: What clustered structures in the rear produce sperm?</p>

Male reproductive: What clustered structures in the rear produce sperm?

Testis follicles

<p>Testis follicles</p>

15

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<p>Male reproductive: What coiled reproductive structures add fluids to sperm?</p>

Male reproductive: What coiled reproductive structures add fluids to sperm?

Accessory glands

<p>Accessory glands</p>

16

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<p>Male reproductive: What tube carries sperm toward the rear exit?</p>

Male reproductive: What tube carries sperm toward the rear exit?

Ejaculatory duct

<p>Ejaculatory duct</p>

17

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<p>Circulatory: What long blue vessel runs along the upper side toward the head?</p>

Circulatory: What long blue vessel runs along the upper side toward the head?

Aorta

<p>Aorta</p>

18

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<p>Circulatory: What segmented structure lies along the insect’s upper back?</p>

Circulatory: What segmented structure lies along the insect’s upper back?

Heart

<p>Heart</p>

19

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<p>Circulatory: What muscle sheet is above the heart?</p>

Circulatory: What muscle sheet is above the heart?

Dorsal diaphragm

<p>Dorsal diaphragm</p>

20

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<p>Circulatory: What muscle sheet is below the heart?</p>

Circulatory: What muscle sheet is below the heart?

Ventral diaphragm

<p>Ventral diaphragm</p>

21

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<p>Nervous: What white structure in the head is the main control center?</p>

Nervous: What white structure in the head is the main control center?

Brain

<p>Brain</p>

22

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<p>Nervous: What structure near the brain stores and releases hormones?</p>

Nervous: What structure near the brain stores and releases hormones?

Corpus cardiacum

<p>Corpus cardiacum</p>

23

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<p>Nervous: What structure near the brain produces juvenile hormone?</p>

Nervous: What structure near the brain produces juvenile hormone?

Corpus allatum

<p>Corpus allatum</p>

24

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<p>Nervous: What repeated bumps line the bottom nerve pathway?</p>

Nervous: What repeated bumps line the bottom nerve pathway?

Ganglia

<p>Ganglia</p>

25

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<p>Nervous: What long white pathway runs along the insect’s underside?</p>

Nervous: What long white pathway runs along the insect’s underside?

Ventral nerve cord

<p>Ventral nerve cord</p>

26

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Female reproductive: What are the repeated pink egg-producing tubes?

Female reproductive: What are the repeated pink egg-producing tubes?

Ovarioles

Ovarioles

27

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Female reproductive: What long tube carries eggs from the ovarioles toward the rear?

Female reproductive: What long tube carries eggs from the ovarioles toward the rear?

Oviduct

Oviduct

28

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Female reproductive: What small sac near the rear stores sperm after mating?

Female reproductive: What small sac near the rear stores sperm after mating?

Spermatheca

Spermatheca

29

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Female reproductive: What is the rear reproductive passage/opening?

Female reproductive: What is the rear reproductive passage/opening?

Vagina