True: The small intestine is the main site of nutrient absorption., Enzymes in saliva begin the breakdown of carbohydrates., The large intestine’s main role is to absorb water from undigested food., The oesophagus is a muscular tube that pushes food towards the stomach by peristalsis., Metabolism refers to all the chemical reactions that occur within the body’s cells., Basal metabolic rate (BMR) is the minimum energy required for basic body functions at rest., Energy from carbohydrates, fats, and proteins can all be used by the body for respiration., The kidneys remove urea, excess salts, and water from the blood., The liver converts excess amino acids into urea in a process called deamination., Carbon dioxide is mainly excreted through the lungs., The urinary bladder stores urine before it is excreted., The pancreas produces enzymes that help digest proteins, fats, and carbohydrates., Bile is produced by the liver and stored in the gallbladder., Fibre in the diet helps the large intestine move waste along., Cellular respiration releases energy in the form of ATP., The liver helps detoxify harmful substances from the blood., Urine is mainly composed of water, urea, and salts., The small intestine has villi and microvilli to increase surface area for absorption., Peristalsis occurs throughout the digestive tract to move food along., Metabolic rate can be affected by age, sex, and activity level., False: The stomach produces bile to help digest fats., Anabolism is the process of breaking down molecules to release energy., Catabolism involves building large molecules from smaller ones., Sweat glands help remove carbon dioxide from the body., The stomach absorbs most nutrients from food., The large intestine produces digestive enzymes., Fat is mainly digested in the stomach., Urea is produced in the kidneys., The lungs remove nitrogenous waste from the body., Metabolism only refers to the breakdown of food.,

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