Pancreas, Liver & Gallbladder (German) Flashcards
What is the difference between Exocrine and Endocrine
Exocrine: Secretes ONTO something
Endocrine: Secretes into the blood stream
Name the 3 Types of Exocrine Glands
- Merocrine
- Holocrine
- Apocrine
- Holocrine
Give an example of a merocrine gland
Salivary gland, Pancreas (releases via exocytosis)
Sebaceous gland is an example of a….. gland
Holocrine Gland
What is the function of Apocrine glands
Secrete membrane enclosed cytoplasm containing proteins and lipids
example (mammary glands)
True or False
The pancreas is and exocrine organ
False: Exocrine AND Endocrine
What is a Zymogen
AN inactive enzyme precursor
These cells secrete glucagon and make of 30% of Islet cells
Alpha cells
What do Beta cells secrete?
Secrete insulin
65% of Islet cell
What do Gamma cells secrete
Secrete Somatostatin
- Inhibits GI and pancreatic endocrine and exocrine secretion
- 4% of islet cells
What do PP cells secrete?
Pancreatic polypeptide
1% of Islet cell
What are the 4 functions of the Liver
- Blood reservoir
- Bile secretion
- Detoxification
- Metabolic homeostasis
What are the 3 major cell types of the liver
- Hepatocyte (work horse of liver)
- Kuppfer cell
- Sinusoidal epithelial cell
These cells produce bile and metabolize carbs, prteins and lipids….
Hepatocyte - workhorse of liver
Which liver cell removes pathogens from blood
Kuppfer cell (Liver specific macrophage)
What defining charecteristic do sinusoidal epithelial cells have?
No basement membrand
Large pores between cells
What is the main function of the Gall Bladder?
To store and secrete Bile
What stimulates the release of bile?
CCK
What does bile contain and where is it made?
Made by the liver
Contains: Bile salts, cholesterol, phospholipids, bilirubins & waste
Which liver cell filters blood?
Kupffer cells filer the blood
Name the 3 structures of the liver architecture classification
- Classic hepatic lobule (endocrine)
- Portal lobule (exocrine)
- Hepatic acinus (3 zones)
Name the 3 zones and their functions of the Hepatic Acinus
I - periportal zone O2 & nutrient RICH
II - intermediate zone
III - peripheral zone: O2 POOR
What are the phases of detoxification?
Phase I: drugs areconverted into morepolar compound (oxidized) Cytchrom p450 and microsomal oxidases
Phase II: Drugs conjugated to hydrophilic molecules
-Transerases