Road to RMT'25: Histopath

#histopath #review #RMT

epithelial tissue

lining, covering and glandular tissue in the body

connective tissue

the most abundant and widely distributed tissue type

muscle tissue

it is highly specialized to contract, or shorten and to produce movement

nervous tissue

it has two major function which are irritability and conductivity

ectoderm, mesoderm, endoderm

the three embryonic germ layers

glandular epithelium

multicellular structure that is secretory in function

endocrine glands

it is often called the ductless glands

exocrine

retain their ducts and their secretions empty through the ducts to the epithelial surface

merocrine

it secretes substances by simple diffusion or exocytosis

apocrine

A secretory products that are collected in the apical part of the secretory cells and the apical portion is also shed along with the secretory matter

transitional

umbrella cells is here

simple squamous

serous membranes, blood vessels and air sacs in the lungs

simple cuboidal

it is the salivary gland, pancreas, walls of the kidneys and surface of the ovaries

simple columnar

digestive tract from the stomach to the anus

simple columnar

Goblet cells are often seen in this type of epithelium

pseudostratified columnar

its cells rest on a basement membrane

pseudostratified ciliated columnar

it lines most in the respiratory tract

stratified squamous

Nonkeratinized and keratinized

stratified cuboidal

it is rare in the body and usually found in the the ducts of large glands

connective tissue

it originate from the embryonic mesenchyme

collagen

the most abundant protein in the body

fibroblasts

it repair and collagen production

collagenous fibers

resistant to shearing and tearing

reticular fibers

supportive stroma for forces parenchymal secretory cells

elastic fibers

tissue can be stretched or distended and return to their original shape

type 1

the most abundant type of collagen an the major structural proteins in the lungs

type 2

it is produce by the chondroblastic activity hyaline and elastic cartilage

type 3

fetal collage which coexist with type 1

type 4

the basement membrane

bone

sometimes called osseous tissue

lacunae

composed of bone cells sitting in cavities

cartilage

less hard and more flexible than bone

elastic

supports the external ear

fibrocartilage

forms the cushion like disks between the vertebrae of the spinal column

hyaline

it forms the supporting structures of the larynx and attaches to the ribs of the breastbone

dense connective tissue

abundance of closely packed fibers

tendon

connects skeletal muscles to bones

ligament

connects bones to bones at joints

loose connective tissue

it is softer and has more cells and fewer fibers than any other connective tissue type expect blood

myxoid connective tissue

the less commonly encountered connective tissue

myxoid connective tissue

it is found in embryonic specimens and in the umbilical cord as Wharton’s Jelly

areolar tissue

most widely distributed connective tissue

areolar tissue

it helps packs and hold the internal organs in their proper positions

adipose tissue

it forms the subcutaneous tissue beneath the skin

adipose tissue

it protects from extremes heat and cold

reticular connective tissue

it can support many free blood cells in the lymphoid organs

blood/vascular tissue

it is the transport vehicle for the cardiovascular system that carries nutrients wastes and respiratory gases

muscle tissue

it is highly specialized tissue arising from the mesoderm that functions to contract or shorten

skeletal

long, cylindrical, multinucleated, nonbranching

cardiac muscle

it is found in the heart and has short, uninucleated, with irregular striations

intercalated disk

branching cells that fit together at junctions called

smooth msucle

it is found in walls of hollow organs like bladder, stomach, uterus and blood vessels

nervous tissue

it rises from the ectoderm

bipolar neurons

it possess a single axon and a single dendrite

unipolar neurons

it is rare in vertebrates and possess

multipolar neurons

possess a single axon and more than one dendrite

pseudounipolar neurons

possess a single process that extends from the cell body and subsequently branches into an axon and dendrite

pseudounipolar neurons

they are present in the spinal and cranial ganglia

neurons

it conducts electrical impulses

pseudounipolar neurons

it has no axons