Screening Paper II · 2 Science and Technology · APPSC Group 1
2.6.2 Human body systems notes
5 notes, in reading order.
- 2.6.2.1Digestive system: organs, enzymes and absorption
Food moves along the alimentary canal, where enzymes from the mouth, stomach, pancreas and intestine break carbohydrates, proteins and fats into small molecules that are absorbed mainly in the small intestine.
Advanced · 6 min · Full course - 2.6.2.2Respiration and excretion: lungs, kidneys and dialysis
Lungs take in oxygen and remove carbon dioxide through millions of alveoli, while kidneys filter blood to remove urea and balance water and salts, and dialysis does this job when kidneys fail.
Advanced · 6 min · Full course - 2.6.2.3Blood and circulation: heart, blood groups and blood pressure
The heart pumps blood in a double circuit, and blood carries oxygen, nutrients, defence cells and clotting factors around the body.
Advanced · 6 min · Full course - 2.6.2.4Nervous system, brain and sense organs
The brain, spinal cord and nerves carry electrical and chemical signals that control movement, thought, balance and the senses, and each part of the brain has a distinct job.
Advanced · 6 min · Full course - 2.6.2.5Endocrine glands and hormones
Endocrine glands release hormones directly into the blood to regulate growth, metabolism, blood sugar, stress response and reproduction, and too much or too little of a hormone causes a named disorder.
Advanced · 6 min · Full course
Practise Human body systems. Questions with answers explained, from the same topics.
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