2. Nutrition Panel
Nutrient Per medium sized
egg (58g)
Nutrient Per medium sized
egg (58g)
Protein (g) 6.4 Vitamin D (μg) 1.6
Total Fat (g) 4.6 Riboflavin; B2 (mg) 0.25
SFA (g) 1.3 Vitamin B12 (μg) 1.4
MUFA (g) 1.7 Folate; B9 (μg) 24
PUFA (g) 0.7 Phosphorus (mg) 91
N-3 PUFA (g) 0.1 Sodium (mg) 78
N-6 PUFA (g) 0.7 Iodine (μg) 25
Vitamin A (μg) 64 Selenium (μg) 12
Figure 1: Ovalbumin (protein
found in egg white) [2]
Figure 2: Vitamin A (Retinol) [3] Figure 3: Vitamin B2 (Riboflavin)[4]
Table 1: Adapted from [1]
3. Mastication [5]
• Teeth, tongue, masticatory
muscles and temporomandibular
joint [5]
• Mechanoreceptors activate [5]
Mechanical Digestion [5]
Salvia secretion [5]
• Mucins (Glycoproteins) &
Water [6]
Chemical Digestion [5]
• Saliva enzymes [5] Figure 4: [7]
4. The Oesophagus
Figure 5: Peristalsis [8]
Peristalsis [6]
• Constrictor muscles [6]
• Moves bolus into oesophagus [6]
• Upper oesophagus [6]
• Active reflex [6]
• Lower oesophagus [6]
• Enteric nervous system [6]
5. • Peristalsis: Antrum and pylorus are subjected
to peristaltic waves [10]
• Bolus is churned into chyme [11]
TheStomach
Chemical Digestion Mechanical Digestion
Figure 6: [9]
Figure 7: [12]:
6. Small Intestine - Digestion
Duodenum
• Chyme enters through pyloric
sphincter [10]
• Pancreatic proteases released [13]
• Stomach acids neutralised [13]
• Absorption preparation [13]
Figure 8: [14]
17. Summary
• Protein, Vitamin A & B2
• Mechanical digestion
• Chemical digestion
• Nutrient functions
• Protein = non preferred energy
source
18. 1. Griffin, BA 2016, ‘Eggs: good or bad?’, vol. 75, no. 3, pp. 259–264.
2. Wikimedia Commons contributors, Ovalbumin 1OVA 2016, Wikimedia Commons, the free media repository, viewed 17 August
2019, <https://commons.wikimedia.org/w/index.php?title=File:Ovalbumin_1OVA.png&oldid=190803832>.
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<https://commons.wikimedia.org/wiki/File:Retinol_3D_balls.png#filelinks>.
4. Wikimedia Commons contributors, Riboflavin 3D balls 2018, Wikimedia Commons, the free media repository, viewed 17 August 2019,<
https://en.wikipedia.org/wiki/File:Riboflavin-3d-balls.png>.
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Diseases, vol. 8, no. 3, pp. 117–129.
6. Campbell, I 2011,‘The mouth, stomach and intestines’, Anaesthesia & Intensive Care Medicine, vol. 13, no. 2, pp. 56–58.
7. Quain, J 1840, ’Anatomy of the mouth’, The viscera of the human body, viewed 17 August 2019
<https://www.flickr.com/photos/liverpoolhls/10825831536>.
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<https://commons.wikimedia.org/wiki/File:2404_PeristalsisN.jpg>.
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10.Boland, M 2016, ‘Human digestion – a processing perspective’, Journal of the Science of Food and Agriculture, vol. 96, no. 7, pp. 2275–2283.
11.Medicine LibreTexts 2019, 5.4: PROTEIN DIGESTION, ABSORPTION AND METABOLISM, viewed 17 August 2019
<https://med.libretexts.org/Courses/American_Public_University/APUS%3A_An_Introduction_to_Nutrition_(Byerley)>.
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<https://commons.wikimedia.org/wiki/File:Regions_of_stomach.svg>.
13.OpenStax 2016,’ Protein Metabolism’, Anatomy and Physiology, OpenStax CNX, viewed 17 August 2019, <https://courses.lumenlearning.com/suny-
ap2/chapter/protein-metabolism/>.
14. Authors own image 2019 (unpublished)
15.Hammiverse.com, n.d., 41.1 Digestion in Humans - Overview and Protein Digestion, viewed 17 August 2019,
<http://www.hammiverse.com/lectures/41/1.html>.
References
19. References
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26. Authors own image 2019 (unpublished).
27. Nutrition Factors 2019, Vitamin B2 Riboflavin Absorption and Digestion, Nutrition Factors, viewed 13 August 2019,
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28. Loomis, H 1999, ‘Protein’, Chiropractic Journal, vol. 13, no. 8, p. 41.
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30. Debelo, H, Novotny, JA & Ferruzzi, MG 2017, ‘Vitamin A’, Advances in Nutrition, vol. 8, no. 6, pp. 992–994.
31. Goldstein, MC, & Goldstein, MA 2018, Vitamins and Minerals: Fact Versus Fiction, ABC-CLIO, LLC, 2018 ProQuest Ebook Central,
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4eee-ab6e-3ef2482e3e22@8.25>.
Editor's Notes
Moving onto the micronutrients, here you can see the different uses of Vitamin A including facilitating immune response, vision, cell differentiation and proliferation, intercellular communication and reproduction[19].