Accessory Organs Of Git

Accessory Organs of the Digestive Tract

Disclaimer Shekshun A pasensya na kayo kasi dito sa Accessory glands, hindi ko pa naisasama ang salivary glands. Kahit nung undergrad kasi ako mismo di ko sya madistinguish kapag pinakita na sa akin. Haha. Tsaka nahihirapan akong ituro yung distinguishing feature kaya hindi ko siya magawa. Siguro halos 1 oras kong tinititigan yung salivary glands at iniisip kung papano ituturo. At dahil hindi ko talaga alam, pwde bang bukas na lang yun bago mag-exam at itanong natin sa mga mas nakakaalam? Hehe. Sorry! Kapag nga pala inaral nyo, wag nyo munang i-slideshow agad kasi yung notes dun ko nilagay sa panel na may click to add notes

PANCREAS

Centroacinar cell  pointer

Artery

Vein

LIVER

Konting lecture part lang Second largest organ and the largest gland Thin capsule : GLISSON’S CAPSULE Sparse, delicate, reticular CT accompanying blood vessels as they penetrate the parenchyma Predominant cell type: HEPATOCYTES Cell arrangement : 1-2 cell thick plates separated by HEPATIC SINUSOIDS Dual blood supply: portal vein and hepatic artery Three drainage systems: hepatic veins, lymphatic vessels, and bile ducts.

Portal vein Hepatic artery

Bile duct

Central vein

Kuppfer cell

Sinusoid

Hepatocytes

Kuppfer cell

Sinusoid

Hepatocytes

GALL BLADDER

A hollow pear-shaped green organ Attached to the lower surface of the liver FUNCTION: stores (30-50 ml) and concentrates bile and releases it in response to CCK

• Hollow organ with layered walls A. MUCOSA • Simple columnar epithelium overlying lamina propria. • Plicated into convoluted folds, varied height; narrow clefts – Secrete mucus – Contain a membrane sodium pump for water absorption from stored bile (concentrate)

B. MUSCULARIS • interwoven smooth muscles (L, T , & O) + C, E , R fibers • Contract and empty gall bladder <-- CCK

C. ADVENTITIA AND SEROSA • DCT may be attached to the liver (adventitia) and a serosa covering its free (peritoneal surface)

Mucosa – simple columnar epithelium

Muscularis

Serosa/Adventitia

Muscularis