| Question |
Answer |
| What happens if you lose the enteric nervous system? |
no propulsion of materials in GI tract -random contractions |
| Where does tonic inhibition occur? |
sphincters |
| What does delayed emptying cause? |
nausea, vomiting, bloating and heart burn |
| What is rapid emptying? |
diarrhea (osmotic and secretory) |
| What is secretory diarrhea? |
cholera - infection, upsets ion balance across the gut |
| What does the digestive system provide to the body? |
nutrients, water and solutes |
| What are the four basic functions of the GI tract & accessory glands? |
fragmentation, digestion, secretion, and absorption |
| What is osmotic diarrhea? |
ex - lactose intolerant - missing lactase results in lactose being delivered to the colon, no glucose transporter in colon, so material sits in colon, pulls water into colon - diarrhea |
| Which part of the GI tract are passive conduits/ |
esophagus and anus |
| Which part of the GI tract is a secretory organ? |
stomach |
| Which part of the GI tract is absorptive? |
intestines |
| Which type of diarrhea is isoosmotic? |
all kinds of diarrhea are isoosmotic - 300mOsm |
| What is the concentration of NaCl in secretory diarrhea? |
300 mOsm |
| What is the concentration of NaCLl in osmotic diarrhea? |
less than 300 mOsm - glucose adds to concentration |
| Will sever diarrhea result in metabolic acidosis or metabolic alkalosis? |
metabolic acidosis |
| What is the best way to rehydrate someone who has severe diarrhea? |
salt solution containing rice (polymers of glucose) |
| What does increased gastrin do to secretin? |
increased secretin |
Science Vocab 147928
