Curse 2018/19
Digestive system
presentación_digestivo.pptx | |
File Size: | 3769 kb |
File Type: | pptx |
Respiratory System
presentación_respiratorio.pptx | |
File Size: | 1334 kb |
File Type: | pptx |
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UNIT 3: HUMAN NUTRITION
Nutrition is performed by several systems. One of them is the digestive system. It provides with nutrients. The respiratory system provides the body with the oxygen it needs to carry out celular respiration. Wastes are expelled out using the excretory system and everything is transported by the circulatory system.
the_human_digestive_system.pptx | |
File Size: | 409 kb |
File Type: | pptx |
Digestion and absorption:
Both processes take place in the digestive system. First of all, food has to be broken into little pieces (digestion) in order to be absorbed and used by cells.
The nutrients obteined from digestion pass to the blood in a process called absroption that takes place in the intestines. Nutrients go to the blood and then to the cells to be used by them in the metabolism.
Types of digestion: Chemical and mechanical.
Mechanical digestion: the food is broken into pieces by mechanical processes (chewing, peristalsis).
Chemical digestion: molecules are broken into little molecules and monomers by enzymes. (Mouth, stomach, intestines).
Mechanical digestion: the food is broken into pieces by mechanical processes (chewing, peristalsis).
Chemical digestion: molecules are broken into little molecules and monomers by enzymes. (Mouth, stomach, intestines).
The Respiratory System:
The gas exchange: O2 from the lungs and CO2 from the cells.
respiratory_system_article.docx | |
File Size: | 660 kb |
File Type: | docx |
the_human_respiratory_and_circulatory_system.ppt | |
File Size: | 1500 kb |
File Type: | ppt |
affects_of_smoking_on_the_respiratory_system.docx | |
File Size: | 16 kb |
File Type: | docx |
The circulatory system. The one that delivers nutrients and removes wastes.
A heart disection....
heart_dissection_labinstructions.pdf | |
File Size: | 196 kb |
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The excretory system: to filter the blood (urinary sytem), skin and lungs.
excretory_system.pptx | |
File Size: | 167 kb |
File Type: | pptx |
A kidney dissection....
kidney_dissection_guide.pdf | |
File Size: | 505 kb |
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