life processes

• Parts of an alimentary canal in humans are referred to as MOSS DJ I LA, which stands for Mouth, Oesophagus, Stomach, Small Intestine, Duodenum, Jejunum, Ileum, Large Intestine, Anus.
• Salivary glands secrete an enzyme called salivary amylase or ptyalin, which degrades starch into simple sugar.
• Peristaltic movement is a wave of contraction behind the food and expansion in the region of contained food that occurs in the alimentary canal for pushing the food from anterior to posterior ends.
• Respiration is the process in living organisms, which involves breathing (gaseous exchange) and the breakdown of simple food in order to release energy inside the cell.
• The breakdown of sugars by yeast to make alcohol in the absence of air is called fermentation.
• The accumulation of lactic acid causes muscle cramps.
• Pharynx contains rings of cartilage which ensure that air passage does not collapse.
• Respiration in plants occurs all through out the day, but the photosynthesis process occurs in the daytime, in the presence of sunlight only.
• Small intestine is the site of the complete digestion of carbohydrates, proteins and fats.
• Bile is secreted by liver and stored in gall bladder.
• Emulsification of fats is the conversion of large fat pieces into very fine fat globules.
• End products of respiration are CO2 and H2O.
• Examples of organisms that perform respiration include most plants and animals, muscles, bacteria, yeast and parasitic worms, etc.
• Human respiratory system serves to provide fresh oxygen to all body cells and removes harmful carbon dioxide from the body.
• Human respiratory system comprises nostrils, nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, alveoli, blood capillaries and lungs.
• Breathing involves two main processes: inspiration (breathing in) and expiration (breathing out).