Histology-Term1

Front 1

Most cell membranes are in the fluid-mosaic model

Back 1

a. Proteins are moving constantly changing
b. Apical area of the cell is different than the lobe and the junctional complex (?)
i. Different receptors in the junctional complex
ii. MITOCHONDRIA and the NUCLEAR ENVELOPE are double membranes

Front 2

Muscularis externa of the esophagus

Back 2

a. Upper 1/3 = skeletal involuntary à rapid contraction
b. Middle 1/3 = mixed à slower contraction
c. Lower 1/3 = smooth à slowest contraction

Front 3

Chief cells – FUNDIC region of stomach

Back 3

a. Sero-enzymatic cells
b. Found at the base of the fundic glands, close to the muscularis mucosa interna
c. How can you tell the difference between a chief cell that’s empty or full?
i. The zymogen granules will be used up, you’ll have empty looking cells
ii. Mucous gland cell will be basal and flat
iii. Nucleus of chief cell would be EUCHROMATIC

Front 4

Pseudostratified epithelium

Back 4

is in respiratory tract

Front 5

Basement Membrane-3 Components

Back 5

i. Lamina densa – made by epithelium
ii. Lamina lucida - made by epithelium
iii. Lamina reticularis – made by connective tissue

Front 6

Pancreas

Back 6

a. It doesn’t have:
i. Myoepithellial cells
ii. striated ducts
iii. demilumes
iv. mixed glands
b. It Does have:
i. A defining centroacinar cell

In the exocrine portion there are pure sero-enzymatic cells

Front 7

Smooth Muscle cells

Back 7

a. Have no:
i. Myofibrils
ii. Sarcomeres
iii. Well-developed sarcoplasmic reticulum
1. pinocytotic vesicles are the closest thing to SR
iv. T tubules
v. Z-lines
1. something like a Z line (endbodies peripheral cytoplasm?)

Front 8

Cardiac Muscle Cells

Back 8

a. Intercalated disk – lateral separation of cells
i. Glorified junctional complex
ii. Ionic coupling

Anchoring by adherens and desmosomes, attachment for filaments – occurs at z-line, it becomes the transverse element

Front 9

Epiphyseal Plate

Back 9

a. Enchondral ossification
b. NOT intermembranous
c. Epiphyseal line – closing line
d. KNOW the zones and the direction
i. Reserve, proliferation, maturation & hypertrophy, calcified cartilage, ossification (metaphysis)
ii. Hemotoxylin will stain calcified cartilage BLUE

Front 10

Macrophage Types

Back 10

a. kupfer cell is a macrophage derived from monocytes in the Liver
b. osteoclast is the bone macrophage
c. hyaline cartilage – the most common, it’s a sensitive little bugger
i. metachromatic – due to the fact that the matrix is different around a bunch of cartilage cells and away from cartilage cells.
ii. Glucosamines are close to cell – metachromatic reaction
iii. A different stain or pattern to the same stain

Front 11

Bile canaliculi

Back 11

a. It is the intercellular duct

Front 12

Glands

Back 12

Apocrine, holocrine, merocrine

Front 13

Microvilli

Back 13

a. Villi are a collection of these cells

Plicae circularis is an additional fold.