Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Phys4 GI Intro

Phys4 Overview of GI function

QuestionAnswer
3 main phases of digestion 1.Cephalic (food outside the body, senses are stimulating activation). 2.Gastric (food in the stomach). 3.Intestinal (chyme moving through the Intestines, abrosorption). **All 3 are ALWAYS ongoing.
Cephalic phase of digestion The senses (sight, smell, thought, sound) trigger responses in anticipation of food: 1.Salivation. 2.Vagal activation of Orad & Cuadad stomach, pancreas, liver, and GB.
What are the 3 main functions of saliva 1.Lubrication. 2.Protection. 3.Digestion.
Main contents within saliva 1.Enzymes (amylase for carb digestion). 2.Mucous. 3.Bicarb. 4.Antibacterial agents.
Main stomach secretions 1.Pepsin. 2.Acid. 3.IF. 4.Mucous. 5.Hormones.
Functions of the Orad Stomach Upper part of stomach that: 1.Accomadates. 2.Digests. 3.Delivers to small intestine.
Functions of the Caudad Stomach Lower part of stomach 1.Mix. 2.Grind. 3.Deliver to small intestine.
Do they Orad and Caudad stomach work together? YES, they both help to deliver food to the small intestine.
Main Pancreatic secretions EXOCRINE PANCREAS secretes: 1.Digestive enzymes. 2.Bicarb.
Main liver/GB secretions 1.Bile. 2.Bicarb.
Key sensory receptors found in the GI 1.Stretch. 2.pH. 3.Osmolality. 4.Chemo. **contribute to regulation hormone release.
Where will you find striated muscle in the GI? 1.Pharynx. 2.Upper Esophagus. 3.External Anal Sphincter
What is the difference b/w Intrinsic and Extrinsic nervous systems in the GI? EXTRINSIC: the SNS & PNS which modulate the Intrinsic system. INTRINSIC: (Enteric) is w/in the gut wall and serves as the "brain" of the GI. It initiates neural signals & motility, adjusting function on its own.
Where all do the GI sensors in the duodenum send signals to? They send neural & hormonal signals to: 1.Pancreas. 2.Liver. 3.GB. 4.stomach. **These neuronal reflexes influence secretions & motility.
Main function of Small Intestine 1.Primary site for absorption & digestion. 2.Majority of WATER absorption. **Mostly completed by the end of jejunum.
What does the Iliocecal reflex influence? Gastric emptying and motility. **If it is stimulated by passing food, it signals to stop emptying and fod delivery.
Main function of Large Intestine 1.Absorbs water and electrolytes. 2.Packs & Evacuates (biggest job)
Created by: WeeG