Digestive and Excretory System

Question 1

Type of system

Answer 1

Complete digestive system

Question 2

Divisions

Answer 2

Divided into 3 sections
* Foregut: Ingestion, temporary storage and grinding
* Midgut: Production and secretion of digestive enzymes
* Hindgut: Absorption of water, salts and other molecules, excretion

Question 3

Foregut

Answer 3

• Pharynx: 
• Esophagus:  
• Crop: Food storage 
• Proventriculus: Grinding organ (in insects that feed on solid food) 

Question 4

Midgut

Answer 4

• Gastric caecum: Provides extra SA for secretion & absorption
• Ventriculus: Primary site for enzymatic digestion & absorption
• Peritrophic membrane: Protects digestive cells

Question 5

Hindgut

Answer 5

• Ileum/colon/rectum: Regulate absorption of water and salts from waste products. 90% of water removed before it passes through anu
• Anus
• Malpighian Tubes: Remove nitrogenous waste from hemolymph 

Question 6

Saliva

Answer 6

• From salivary glands (labial glands)
• Produces digestive enzymes, anticoagulants (blood feeders)