Histology: Structure, Function, Location Flashcards
Simple squamous epithelium
S: one later, fried egg looking cells
F: rapid diffusion and filtration
L: glomerulus of kidneys, blood vessel linings, mesothelium of body cavities
Simple columnar epithelium
S: single layer of long skinny cells with goblet cells interspersed
F: absorption, secretion, movement of particles
L: digestive tract from end of stomach to intestines, bronchioles
Simple cuboidal epithelium
S: single later of cube shaped cells
F: secretion and absorption
L: tubules of kidneys, glands, ducts
Pseudostratified columnar epithelium
S: Can look stratified because every cell touches basement membrane but not all reach the free space. But still only one layer of columnar cells. Will ALWAYS have cilia
F: secretion, absorption, capture of foreign substances
L: trachea, nasal cavity, sinus lining
Stratified squamous epithelium
S: múltiple layers of squamous cells
F: protection against abrasion and infection, reduce water loss
L: epidermis, mouth, throat, larynx, anus, vagina
Stratified columnar epithelium
S: múltiple layers of tall thin cells, will be ciliated in larynx
F: protection, secretion
L: larynx, mammary gland ducts
Stratified cuboidal epithelium
S: múltiple layers of cube shaped cells
F: secretion, absorption, protection
L: sweat and salivary gland ducts
Transitional epithelium
S: changes shape when stretched versus unstretched. Dome or cube shaped when not stretched, flatter when stretched
F: stretch
L: bladder, ureters
Skeletal muscle
S: striated, non branching, long skinny closely packed cells, nucleus near periphery
F: voluntary movement
L: attached to skeleton
Smooth muscle
S: unstriated, long skinny closely packed cells
F: involuntary movement
L: hollow organs of digestive system, uterus
Cardiac muscle
S: branching, striated, long skinny closely packed cells with gap junctions and intercalated discs Involuntary
F: pump blood through heart
L: heart
Nervous tissue
S: star shaped cells
F: transmission of nerve impulses
L: brain, spinal cord, nerves
Loose areolar connective tissue
S: fibroblasts, macrophages, and lymphocytes in a network of collagen, elastic, and reticular fibers. Can merge with dense connective tissue
F: loose packing, support, nourishment for associated structures
L: under epithelial basement membranes, packing between glands, muscles, and nerves. Lamina propria of mucous membranes
Loose adipose connective tissue
S: adiposecytes with little extra cellular matrix, cytoplasm at periphery
F: packing, insulation, energy storage, organ protection
L: subcutaneous areas, around kidneys, in mammary glands
Reticular connective tissue
S: irregularly arranged reticular fibers with leukocytes and macrophages interspersed
F: superstructure for lymphatic and hemopoietic tissues
L: within lymph nodes, spleen, bone marrow
