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Histology Practical I and II
Epithelial tissue, connective tissue, cartilage, bone, adipose tissue, blood, muscle tissue, nerve tissue, circulatory system
143
Histology
Graduate
02/11/2013
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Lobar ducts
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large branches of the main duct which extend to the lobes of the gland
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Interlobar ducts
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Interlobar ducts found in the connective tissue surrounding the lobes
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Interlobular ducts
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Interlobar ducts found in the connective tissue surrounding the individual lobules of the gland
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Intralobular ducts
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Branched interobular ducts in lobules
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Intercalated ducts
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terminal branches of the duct system, which connect intralobular ducts with the secretory units of the gland
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compact bone
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spongy bone
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b and t cells (small lymphocytes)
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basophil
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eosinophil
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eosinophils
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monocyte
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neutrophils
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natural killer cell
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parenchyma
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epithelial components of glands
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stroma
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connective tissue portion of glands
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serous gland
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has thin fluid, may contain protein
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mucous gland
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has thick mucous material
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merocrine
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no cytoplasm lost
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apocrine
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some cytoplasm lost
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holocrine
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entire secretory cell lost
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duct system from largest to smallest
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gray matter
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soma (cell body), synapses, dendrites, axons
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white matter
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only myelinated axons
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nerve
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collection of axons in the PNA
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tract, lemniscus, fasciculus
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collection of axons in CNS
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nucleus vs. cortex
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nest vs. layers of grey matter
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ganglion
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collection of soma (nerve cell bodies) in the PNS
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afferent
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input/towards
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efferent
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output/away -> signal travels to EFFECTOR
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nissl bodies
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stacks of rER
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schwann cells
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-supporting cells in the PNS
-produce the lipid rich myelin sheath
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satellite cells
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-for a complete layer surrounding the neuronal cell bodies of ganglia
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neuroglia
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-supporting cells in CNS
-4 types
1. oligodendrocytes
2. astrocytes
3. microglia
4. ependymal cells
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oligodentrocytes
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-small cells that are active in the formation and maintenance of myelin in the CNS
-can myelinate multiple neurons
-usually only see a small, round, dark staining nucleus
-cell shape is star-like
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astrocytes
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-provide physical and metabolic support for neurons of CNS
-larger, lighter, round/oval nucleus with dark staining nucleolus
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microlgia
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-small, dark, flattened, elongated nuclei
-possess phagocytotic properties
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dorsal root ganglia
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-contain cell bodies
-not synaptic stations
-see LOTS satellite cells
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sympathetic ganglia
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-contain cell bodies of autonomic (postsynaptic) neurons
-contain synaptic stations
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Type I muscle fibers (red)
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-slow oxidative fibers

-slow twitch, fatigue resistant, low power output
-energy from oxidative phosphorylation
-lots myoglobin
-need oxygen

-smaller
-lots mitochondria
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Type IIa muscle fibers (white)
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-fast oxidative-glycolytic fibers

-medium sized cells
-fewer mitochondria

-fast twitch, fatigue resistant
-depend on glycoysis (anaerobic resp.)
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Type IIb (white)
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-fast glycolytic fibers

-VERY large fibers
-few mitochondria

-fast twitch, fatigue prone, glycolytic
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