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Rov Loren Aniceto P.6 Histology - Coggle Diagram
Rov Loren Aniceto P.6
Histology
Epithelial Tissue
Cuboidal
Simple
1 layer, semithick, cube-shaped
Secrete & Absorb
kidney tubules & lines ducts/glands
Strat.
Protect glands
Sweat, Mammary, Salivary Glands
Multi-layered, cube-shaped
Columnar
Strat.
Protect and Secrete
Male Urethra and glands
Multi layered, only apical layer
Pseudostrat.
Secretes Mucus
Location
Ciliated: Trachea
Noncil: line male sperm ducts
Actually single layered, has cilia, nuclei moves up and down
Simple
1 layer, thickest, column-shaped
Absorption & durable
Digestive Tracts
Squamous
Simple
Diffusion & Filtration
Lungs & vessels
1 layer, flat
Strat.
Protects underlying tissue
Locations
Keratinized: Skin
Nonkeratin: Vagina & Esophagus
Multiple layers, flat
Transitional
Stretches
Bladder
Mix between strat. cuboidal & strat. squamous
Connective Tissue
CT Proper
Loose
Reticular
loose network of fibers in ground substance
Fibers form soft internal skeleton(Stroma), support other cell types
Lymph nodes, bone marrow, spleen
Adipose
Matrix like areolar
Packed with adipocytes (Fat cells)
Reserves food fuel, protects & support organs
Around kidneys & eyes, under skin, in breasts
Areolar
Wraps & cushion organs
Distributed beneath epithelial
Gel-like matrix
Contains: fibroblasts, macrophages, mast cells
Dense
Irregular
Same structure as regular, only dif. is irregularly arranged collagen fibers
Structural strength
Dermis of skin, Fibrous capsules of organs & joints
Elastic
High Proportion of elastic fibers
Allows recoil after stretching, pulsate flow of blood
Walls of large ateries, certain ligaments, bronchial tubes
Regular
Attach muscles to bones/other muscle, withstand stress
Tendons, most ligaments
Parallel collagen fibers, some elastic fibers
fibro blast, most common cell
Cartliage
Fibrocartilage
Less firm than hyaline
Absorb shock
Intervertebral discs, discs at knee joints
Elastic
Similar to hyaline but with more elastic fibers
Maintains shapes of structures
External ear(Pinna), epiglottis
Hyaline
Firm matrix, produce chondroblasts
When chondrocytes develop, they go into lacunae
Support & Reinforce
Tips of long bones, ribs, nose, trachea
Bone
Support & protect
Bones
Hard, matrix containing collagen fibers
Osteocytes in lacunae
highly vascularized(blood)
Blood
Transports subst. through body
Blood vessels
Red & White blood cells in matrix
Muscular Tissue
Cardiac
Nonvoluntary, circulates blood into body
Walls of the heart
Branched, striations, uninucleated, intercalated discs
Smooth
Moves substances through internal passageways
Mostly in walls of organs
Spindle-shaped, no striations, central nuclei
Skeletal
Locomotion, voluntary control & movement
Muscles attached to bones or to skin
Long, cylindrical, multinucleate, striations(banded pattern)
Nervous Tissue
Transmit signals from receptors to muscles & glands
Brain, Spinal cord, & Nerves
Cells
Neurons(Branching Cells) conduct impulses
Dendrites(Responds to stimuli)
Axons(Transmits electrical impulses through body)
Supporting cells
Support neurons
Membranes
Mucous
lines body cavities open to outside
Term "mucosa" refers to location, not composition
Nose, mouth, esophagus
Cutaneous(Skin)
Exposed to air & is a dry membrane
Keratinized Strat. Squamous(Epidermis) attached to dermis
Serous
Covers the internal organs
Found in ventral body cavities
Structure
Simple Squamous(Mesothelium)
Areolar CT
Glands
Exocrine
Unicellular
Mucous & Goblet Cells
Inside linings of intestines & respiratory tracts
Multicellular
Epithelium-derived ducts
Secretory Unit (Acinus)
Endocrine
Lose ducts during development
Produces hormones that are then sent to extracellular space