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16. Digestive system: Salivary glands, tongue, oesophagus and stomach

Choose all that apply:

1.Identify the functions of pharynx.

Secrete renin
Connects nose and mouth to oesophagus
Pathway for food from mouth to oesophagus
Secretes gastric juice

2. Guess the functions of oesophagus.

Movement of food is by peristalsis
Rhythmic contractions and relaxations are observed
It is a J-shaped organ
It is a 22-centimeter long canal

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