Midterm 1 Flashcards
Characters of epithelium
Cellularity - cell only Polarity - apical and basal A vascularity - no blood vessels Replacements Rest in basement membrane
Epithelium function and location
Absorption
Secretion
Protection
Skin
Trachea
Urinary bladder
Simple squamous
Function
Barrier
Secretion lube
Simple cuboidal
Function
Absorption
Secretion
Simple columnar
Function
Mucous
Absorption
Pseudostratified
Function
Secretes mucous
Stratified squamous
Function
Protection from abrasion
Stratified cuboidal
Function
Protection
Stratified columnar
Function
Protection and secretion
Transitional
Function
Expand
Connective tissue matrix (3) define
Collagen - thick tough resistance flexibility
Fiber - stretch and recoil yellow fiber
Reticular - thin cologne fiber with glycoproteins
Areolar
Function
Most abundant
Wraps and cushion
Inflammation
Adipose
Function
Fat
Reticular
Function
Provide shapes
Dense regular
Attachment of bone and muscle
Dense irregular
Elastic
Moves skins
Hyperplasia
Tissue growth through cell multiplication
Hypertrophy
Muscle enlargement from preexisting cell
Working out
Neoplasia
Development of tumor
Differentiation -
Unspecialized tissues of embryo becomes specialized
Metaplasia
Changing one type of mature tissue to another
Smokers bronchi
Atrophy
Shrinkage of tissue through loss in cell size or number
Necrosis
Pathological death of tissue
Apoptosis
Normal death of cell
Pluripotent
Stem cell that can be developed into any type of cell in the embryo
Totipotent
Develops into any type of fully differentiated human cell
Multi potent
Bone marrow producing blood cell
Unipotent
Most limited plasticity, only epidermal cell produce it
Layers of skin
Low to high
Stratum basal Stratum spinosum Stratum granulosome Stratum lucidum Stratum corneum
What does stratum basale have?
Tactile cell
Stem cell
Melanocytes
Sensory nerve ending
What does spinosum have?
Dendritic cell and Desmosomes
Is stratum granulosome alive or dead?
Alive
Stratum lucidum is alive or dead and is usually in _______ skin?
Dead
Thick