Exercise 17: The Digestive System
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It i the type of digestive system characterized by the egestion of excretory wastes through the mouth.
incomplete digestive syste,
It is found at the tapered anterior end of the fluke.
oral sucker
It borders the mouth of the fluke.
oral sucker
Complete the sentence below: In the digestive system of the fluke, the esophagus branches into the _______________.
intestines
Identify the general divisions of the digestive system of cockroaches.
• foregut • midgut • hindgut
It refers to the largest part of the cockroach foregut.
crop
It marks the anterior end of the cockroach foregut.
pharynx
It marks the posterior end of the cockroach foregut.
gizzard
Are tubular protrusions marking the anterior end of the cockroach midgut.
gastric ceca
It marks the boundary of the midgut and hindgut of cockroaches.
malpighian tubules
It marks the anterior end of the cockroach hindgut.
ileum
It refers to the main length of the cockroach hindgut.
colon
Identify the general divisions of the toad digestive system.
• digestive tract • digestive glands
Complete the sentence below: The _______________ is where the food passes through, while the _______________ are outgrowths which secretes enzymes towards the tract via ducts.
digestive tract, digestive gland
Complete the sentence below: The _______________ is where the food passes through, while the _______________ are outgrowths which secretes enzymes towards the tract via ducts.
digestive tract, digestive glands
It refers to the space within the mouth of toads.
buccal cavity
It lines the maxillary arch of toads.
maxillary teeth
Are paired openings at the roof of the buccal cavity.
internal nares (choanae)
Are structures found posterior to the internal nares.
vomerine teeth
Are median openings found at the posterior end of the buccal cavity.
• esophagus (dorsal) • glottis (ventral)
It refers to the space containing the visceral organs.
coelom
It is the part of the coelom located at the chest and the abdomen.
pleuro-peritoneal cavity
Complete the sentence below: The _______________ contains the heart.
pericardial cavity
It refers to the surface of the pleuro-peritoneal cavity.
peritoneum