HISTOLOGY Flashcards
(35 cards)
Type of soft connective tissue that has fibers and fibroblast (secreting fibers) all loosely arranged in a semifluid ground substance.
Loose connective tissue
Give the 3 main parts of neuron.
- Cell body/soma
- Axon
- Dendrite
Simple squamous epithelium can be seen in ?
- Blood and lymph vessels
- Heart
- Air sacs of lungs
- Pleura
- Peritoneum (mesothelium, endothelium)
Neurons are more numerous than neuroglia. True or False?
False
Excitable cells which form communication lines in most of the nervous system.
Neurons
They secrete myelin sheath in PNS.
Schwann cells (lemocytes)
Tissues which exert the greatest control over the body’s responsiveness to changing conditions; have property of irritability - ability to respond to any forms of stimuli
Nervous tissue
They secrete myelin sheath in CNS.
Oligodendrocyte
In all types of connective tissues, except ____, fibroblasts secrete fibers of structural proteins: collagen, elastin, or reticulin.
Blood
Type of epithelium containing single layer of cells; lines body cavities, tubes, and ducts (mesothelium, endothelium)
Simple epithelium
Describe skeletal muscle.
- Striated, voluntary
- Muscle attached to bones
- Multinucleated cylindrical fibers
Describe cardiac muscle.
- Striated, non-voluntary
- Muscle in myocardial layer of heart
- Branching fibers and intercalated discs
Type of soft connective tissue having fibroblasts occur in rows between many parallel bundles of fibers (tendon_
Dense regular
Give the three types of connective tissue fibers and their characteristics.
- Collagen fibers - have collagens; which are long, flexible, but not stretchable fibers
- Elastic fibers - have elastins, which are stretchable fibers (but not strong)
- Reticular fibers - have reticulins; which are similar to collagen fibers; but are thin and delicate
Describe smooth muscle.
- Non-striated, involuntary
- Gastro-intestinal, bronchial, biliary, blood vessel
- Fusiform/spindle-shaped
Well-developed neuroglia; long star-shaped cells with numerous, highly-branched processes
Astrocytes
Connective tissue is classified according to ?
- Fibroblast distribution
- Type of fibers present
What are the 3 essential components of tissues?
- Cells
- Intercellular substance (in conn. tis., ground substances/matrix has fibers?
- Junctional complex
Type of epithelium that has 2 or more layers; for protection (skin)
Stratified epithelium
Transitional epithelium can be seen in ?
- Renal pelvis of kidney
- Ureter
- Urinary bladder
- Urethra
Type of connective tissue that has fibroblasts and many collagen fibers on skin forms protective capsule around organs that do not stretch much
Dense irregular
They are phagocytic and is considered as fixed macrophage of the brain.
Microglia
Tissues capable of contraction
Muscular tissue
Give the 5 components of junctional complex and give their functions.
- Hemidesmosome - anchors cell to basement membrane
- Desmosome - anchors cell to cell
- Gap junction - communicating junction
- Zonula adherens - adhering jxn.
- Zonula occludens/tight junction - impermeable junction
