Digestive System of Cockroach (Medical Entrance)
Covers cockroach digestive anatomy including mouth parts, alimentary canal sections (foregut, midgut, hindgut), digestive organs, and associated structures
Questions
Which of the following is the largest mouth appendage of a cockroach?
- Galea
- Labium
- Lingua
- Lacinia
Which of the following organs is/are not found in the foregut of a cockroach?
- Pharynx
- Crop
- Gizzard
- Hepatic caecae
All of the following are true segmented mouth appendages, except
- labrum
- hypopharynx
- mandibles
- maxilla
Postmentum and prementum are parts of
- labrum
- hypopharynx
- labium
- maxillae
Where are pulville located in the alimentary canal of a cockroach?
- Crop
- Armarium
- Posterior part of the gizzard
- Caecae
Where are 6 teeth (internally produced) found in the digestive system of a cockroach?
- Midgut
- Gizzard
- Crop
- Hindgut
Which part of the alimentary canal of cockroaches secrete(s) digestive juices?
- Mesentron
- Caecae
- Crop
- Anterior ilium
Which of the following structures bear(s) sensory organs?
- Labrum and labium
- Mandibles and maxillae
- Maxillary and labial palps
- Hypopharynx
Which part of a cockroach is lined by the peritrophic membrane?
- Foregut
- Midgut
- Hindgut
- Salivary glands
Which of the following is/are not involved in secretions necessary for digestion?
- Lining of midgut
- Lining of gizzard
- Hepatic caecae
- Salivary glands
Which of the following serve(s) as the strongest muscle(s) in the head of a cockroach?
- Maxillae
- Mandibles
- Labium
- Hypopharynx
Which type of mouth parts are present in a cockroach?
- Prognathous
- Hypognathous
- Opisthognathous
- Haustellate
On which organisms do symbioant wood cockroaches depend for cellulose digestion?
- Flagellates
- Bacteria
- Silicoflagellates
- Amoebae
Which opening is controlled by the proctodeal valve of a cockroach?
- Mesentron to gizzard
- Midgut to hindgut
- Foregut to midgut
- Colon to rectum
Which endosymbiont is believed to inhabit all species of cockroach (Cryptocercus) studied till date?
- Blattabacterium relictus
- B. cuenoti
- B. clevelandi
- B. punctulatus