Andhra Pradesh Board Solutions for Chapter: Coordination in life processes, Exercise 14: Fill in the blanks

2:1:2:3 is the ratio of our dentition. Here 1 represents _____.

Large protein molecules are broken down in _____ of digestive tract.

_____ is a strong acid which is secreted during digestion. (Sulphuric acid, Hydrochloric acid)

Olfactory receptors present in _____ triggers signals to brain.(nasal cavity, mouth)

The pH of saliva is _____ in nature. (acidic/alkaline)Enable GingerCannot connect to Ginger Check your internet connection
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Fill in the blanks with suitable words given below.

Fluctuations of hormone (i) _____ (ghrelin, gastric secretion) levels result in a sensation of hunger and motivation of consuming food. When you feel your stomach is full and there is no need for food anymore. Another hormone (ii) _____ (leptin, gastric secretion) that gets secreted suppresses hunger. When we take food into the mouth it has to be chewed thoroughly. For this purpose, the (iii) _____ (circular, surface) muscles help in chewing actions, while the (iv) _____ muscles of the jaw move the jaw up, down, forward and backward during the mastication. The (v) _____ (fifth carnival, fifth facial) nerve controls the muscles of the jaw. Under the actions of (iv) _____(central, autonomous) nervous system saliva is released by the salivary glands moistens the food to make chewing and swallowing easier. The salivary (vii) _____ (lipase, amylase) in the saliva breaks down the starch into sugars. As a result of chewing the food is transported into the oesophagus by the action of swallowing which is coordinated by the swallowing centre in the (viii) _____(medulla oblongata, cerebrum) and the (ix) _____(Pons Varolii, Midbrain) the tongue which is gustatory recognise the taste and (x) _____ (10th cranial, 5th cranial) nerve plays an important role in the sensation of taste.