Digestive System Flashcards
What is the main purpose of the GI tract?
The intake of nutrients for use of metabolism and excreting waste
What is the name of the whole tube of the digestive system?
Alignmentary cannal
5 steps of GI?
1) Food ingested
2) Mechanical digestion
3) Chemical digestion
4) Absorption
5) Excrete waste
What are the 2 factors that help the overall GI?
1) Motility
2) Secretion
7 main organs of the DS with measurements?
1) Oesophagus - 25cm
2) Stomach
3) Duodenum - 26cm
4) Jejunum + ileum - 4-6m
5) Colon - 135cm
6) Rectum - 12cm
7) Anal canal - 4cm
4 parts of the colon?
1) Ascending - 15cm
2) Transverse - 45cm
3) Descending - 30cm
4) Sigmoid - 45cm
4 accessory glands of the DS?
1) Salivary glands - enzymes + moisture
2) Pancrease - Enzymes
3) Liver + gall bladder
4) Appendix
4 physiological process of the DS?
1) Motility
2) Secretion
3) Digestion
4) Absorption
3 ways that control motility?
1) Peristalsis
2) Segmentation
3) Sphincters
What is the name of the serous membrane that encloses the abdominal cavity?
Peritoneum
What are the two types of peritoneum?
1) Parietal
2) Visceral
What are the 3 main reflections of peritoneum and where are they found?
1) Mesentery - from posterior below kidney
2) Retroperitoneum - found posterior outside of peritoneum eg. kidneys
3) Omeutum - organ to organ
Two types of Omeutum?
1) Greater - anterior
2) Lesser between organs transversely
Name the 3 main arteries that lead to the abdominal area
1) Celiac trunk
2) Superior mesenteric
3) Inferior mesenteric
Name the 3 branches of the celiac trunk
1) L-Gastric
2) Splenic
3) Common Hepatic