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Digestion, Breathing and Cellular Respiration

  • Science
  • Class 10
  • 3D model
  • English

Digestion, Breathing and Cellular Respiration: a 3D model for Class 10 Science, covering The food path is one tube: mouth, throat, oesophagus, stomach, small intestine, large intestine, rectum…, Food is pushed along by peristalsis: a wave of muscle contraction behind the food., The stomach churns food with gastric juice (acid and pepsin) into chyme and releases it slowly into the small intestine., Bile from the liver (stored in the gall bladder) emulsifies fat into small droplets…, Villi in the small intestine absorb nutrients into blood capillaries….

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Also called

digestion · digestive system · alimentary canal · breathing · respiration · respiratory system · cellular respiration · life processes · nutrition · human digestion · peristalsis · villi · absorption · bile · pancreatic juice · diaphragm · lungs · ventilation · inhalation · exhalation · mitochondria · aerobic respiration

Topics

  • The food path is one tube: mouth, throat, oesophagus, stomach, small intestine, large intestine, rectum…
  • Food is pushed along by peristalsis: a wave of muscle contraction behind the food.
  • The stomach churns food with gastric juice (acid and pepsin) into chyme and releases it slowly into the small intestine.
  • Bile from the liver (stored in the gall bladder) emulsifies fat into small droplets…
  • Villi in the small intestine absorb nutrients into blood capillaries…
  • Breathing in: the diaphragm contracts and flattens and the ribs move up and out, so chest volume increases…
  • The lungs have no skeletal muscle that pulls air in; air always flows down a pressure difference.
  • Food and air share the throat; the epiglottis closes the airway during swallowing.
  • Cellular respiration happens inside cells (mostly mitochondria)…

About this model

A GLB file of about 2055 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Mouth, small intestine, liver, pancreas, large intestine, lungs, bronchial tubes and windpipe: HuBMAP Human Reference Atlas, CCF 3D Reference Object Library (Kristen Browne et al., NIH/NIAID; derived from the NLM Visible Human Project), CC BY 4.0, simplified, moved and recoloured. Food pipe, stomach, throat, voice box, epiglottis, gall bladder, ducts, diaphragm, ribs, breastbone, backbone, villi and body-cell close-ups, markers, gauges, stand and all animation: made for Lably. | CC BY 4.0. All reused meshes are CC BY 4.0 (HuBMAP Human Reference Atlas); new parts made for Lably are shared under the same licence.

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