periodic classification of elements — Science STD 10 — Question
Gujarat BoardEnglish MediumSTD 10Scienceperiodic classification of elements4 Marks
Question
Describe the human digestive organs.
✓
Answer
The various organs of human digestive system are as follows :
$(1)$ Buccal cavity opens into the mouth. It contains teeth and tongue. It contains salivary glands. Digestion occurs through saliva.
$(2)$ Mouth opens into oesophagus. Food moves further in the oesophagus through peristaltic movement.
$(3)$ Oesophagus opens into stomach. The wall of the stomach contain gastric gland. Gastric juice converts the food into acidic medium for the digestion of food.
$(4)$ Stomach opens into small intestine. The exit of food from the stomach is regulated by a sphincter muscle.
$(5)$ It receives secretions of the liver in form of bile juice and bile salts and from pancreas in form of pancreatic enzyme. It is the site for complete digestion of food.
$(6)$ The walls of the intestine contains villi which absorbs digested food and increase the surface area for absorption. The villi are richly supplied with blood vessels.
$(7)$ Small intestine opens into large intestine.
$(8)$ Large intestine opens into anus. Water is absorbed into large intestine. The rest of the material is removed from the body via the anus. The exit of this waste material is regulated by the anal sphincter.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.