Types of Epithelium Flashcards
(14 cards)
Shapes of ET
Squamous
Cuboidal
Columnar
Pseudo Stratified Columnar
Simple vs Stratified
Simple:
-1 layer
-squamous
-columnar
-cuboidal
pseudostratified columnar
Stratified:
-2 layers
-squamous
-transitional “urinary”
Simple Squamous
lung “alveoli”
-diffusion
-secretion
-lungs
-blood vessels
Stratified Squamous
Sole of Foot
(Stratified Squamous, Keratinized)
Protects against friction,
infection, and water loss
Epidermis (keratinized), oral
cavity, vagina, rectum, &
esophagus
Simple Cuboidal
Kidney
Absorption & Secretion
Kidneys and Liver (ducts)
Transitional
Bladder
Allows for stretching
Simple Columnar
Small Intestine (Ileum)
Absorption & Secretion
Stomach & Intestines
Pseudo Stratified Columnar
Trachea and Esophagus
Trapping Particles & Secretion
Respiratory
Skeletal Muscle Tissue
Muscle
Contraction
striations
multi nucleated
Cardiac Muscle Tissue
Controls rhythm
Less striations
single nucleus
Intercalated
disks are the
primary
landmark
Smooth Muscle Tissue
involuntary
no striations
single nucleus
Dense Connective Tissue
Regular:
- parallel collagen fibers
-fibroblast nuclei create collagen
-tendons muscle-bone, ligaments bone-bone
-deep fascia
-binding
Irregular:
-network of collagen
-fibroblast nuclei
-dermis
-provides strength
-resist stress
Elastic:
-layers wavy fibers
-fibroblast nuclei “elastin in collagen”
-vessels
-bronchial tubes
-expansion/contraction
Dense Regular CT vs Smooth Muscle
The fibroblasts on CT tends to be thinner
than the single nucleus of SM
Loose Connective Tissue
Reticular:
-reticular fibers “will stain dark”
fibroblast nuclei “create collagen”
-lymphatic organs
-bone marrow
-framework
-filter “lymphatic”
Areolar:
-thin, elastic fibers
-think, collagen fibers
-fibroblasts in ground sub.
-basal lamina
-support around vessels, joints and organs
-flexible support/cushion
-includes mast cell and macrophages “immune”
Adipose:
-large lipid droplets
-adipocytes “fat storage”
-subcutaneous fat
-packing organs
-insulation/padding
-energy storage
