1. Digestive Compartments
I. Key iterms
Tiêu hóa
Digestive
di'dʒestiv
Compartments
kəm'pɑ:tmənt
intracellular
,intrə'seljulə
endocytosis
vacuoles
vækjuələ
Extracellula
ekstrə'seljulə
continuous
kən'tinjuəs
Gastrovascular cavity
distribution
distri'bju:∫n
nutrients
'nju:triənt
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2. II. Fill in the blank
Most animals process food in specialized…………………….
These compartments reduce the risk of an animal digesting its own cells and…………..
In …………………………………… ..., food particles are engulfed by …………………. and digested within food vacuoles (amoeba, hydra)
………………………………………..… is the breakdown of food particles outside of cells
It occurs in compartments that are ……………………with the outside of the animal’s body
Animals with simple body plans have a ………………………………………that functions in both digestion and …………………………..of nutrients
compartments
tissues
intracellular
digestion
endocytosis
Extracellular
digestion
continuous
gastrovascular cavity
distribution

3. Digestive Compartments
III. Please translate the following passage
Most animals process food in specialized compartments
These compartments reduce the risk of an animal digesting its own cells and tissues
In intracellular digestion, food particles are engulfed by endocytosis and digested within food vacuoles (amoeba, hydra)
Extracellular digestion is the breakdown of food particles outside of cells
It occurs in compartments that are continuous with the outside of the animal’s body
Animals with simple body plans have a gastrovascular cavity that functions in both digestion and distribution of nutrients

4. Intracellular Digestion
Tentacles
Food
Gastrovascular cavity
Mouth
Figure 41.8 Digestion in a hydra
Epidermis
Gastrodermis

5. Digestive Compartments
IV. Home work
Please translate the following passage
More complex animals have a digestive tube with two openings, a mouth and an anus
This digestive tube is called a complete digestive tract or an alimentary canal
It can have specialized regions that carry out digestion and absorption in a stepwise fashion

6. Crop stores and moistens
Fig. 41-9a
Crop stores and moistens
Gizzard pulvarizes food with the aid of sand particles
Esophagus
Intestine enzymatic digestion and absorption
Pharynx
sucks food
Anus
Mouth
Figure 41.9a Variation in alimentary canals
Typhlosole
Lumen of intestine
(a) Earthworm

7. Foregut Midgut Hindgut Esophagus Rectum Anus Crop Mouth Gastric cecae
Fig. 41-9b
Foregut
Midgut
Hindgut
most of the digestion
occurs in this section
Esophagus
Rectum
Anus
Crop
food is stored
and moistened
Figure 41.9b Variation in alimentary canals
Mouth
Gastric cecae
digestion and absorption
(b) Grasshopper

8. Stomach Gizzard Intestine Mouth Esophagus Crop Anus (c) Bird
Fig. 41-9c
Stomach
Gizzard
Intestine
Mouth
Esophagus
Crop
Anus
Figure 41.9c Variation in alimentary canals
(c) Bird