Notes in Intro to Histology 4 Basic Tissue Types

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Published	09/03/2024	The three main types of cells in the bone are {{c1::osteoblasts, osteocytes, and osteoclasts}}
Published	09/03/2024	osteoCYTEs are found in cavities, or {{c1::lacunae}} between the layers of {{c1::calcified bone matrix}}, and (function) {{c1::assist with t…
Published	09/03/2024	osteoBLASTs are found {{c1::along the surface of bones}} AND {{c1::lining the Haversian Canal inside the bone}}. osteoblasts are responsible for …
Published	09/03/2024	osteo{{c1::CLASTs}} are large multinucleated cells that can be found {{c1::within the bone marrow}}, and (function to) {{c1::REMOVE calcified bon…
Published	09/03/2024	The two types of bone tissue are {{c1::cancellous (trabecular) bone}} and {{c1::compact (cortical) bone}}
Published	09/03/2024	compact (cortical) bone is {{c1::DENSE}} and found {{c1::closer to the OUTSIDE surface of the bone}}
Published	09/03/2024	cancellous (trabecular) bone is the {{c1::DEEPER portion}}, with {{c1::interconnecting cavities}}
Published	09/03/2024	both compact and trabecular bones will be arranged in two forms: {{c1::lamellar bone}} and {{c1::woven bone}}
Published	09/03/2024	lamellar bone is arranged in {{c1::sheets}}. 80% of lamellar bone is found within {{c1::compact bone}}, while 20% is found within {{c1::trabecula…
Published	09/03/2024	woven bone is arranged {{c1::randomly}}. It is mostly found in {{c1::developing and growing bones}}
Published	09/03/2024	{{c1::spicules}} are the connections between little beams in trabecular bone, which form spaces that contain {{c1::bone marrow}}
Published	09/03/2024	In compact/cortical bone, there are strcutural units called {{c1::haversian systems, or osteons}}, which consist of {{c1::concentric lamella…
Published	09/03/2024	the central canal of the Haversian system is called the {{c1::Haversian Canal}}, and contains {{c1::blood vessels and nerve fibers}}
Published	09/03/2024	the {{c1::lacunae}} are the white spaces throughout the osteon, which contain {{c1::osteocytes}}
Published	09/03/2024	osteoBLASTs have {{c1::basophilic}} cytoplasts, meaning their cytoplasts are {{c1::negatively}} charged.
Published	09/03/2024	What are the Levels of Biological Systems?
Published	09/03/2024	the smallest living part of the body is the {{c1::cell}}
Published	09/03/2024	{{c1::200}} different cell types that are classified into {{c1::4}} different types of tissue:{{c1::connective tissueepithelial tissuemuscle tissuener…
Published	09/03/2024	there are {{c1::78}} main organs in the body, of which the largest are the {{c1::liver and skin}}
Published	09/03/2024	the major organs, which are necessary for life, are {{c1::brain, heart, lungs, pancreas, kidney, eye, liver}}
Published	09/03/2024	we can accquire samples to study in histology by {{c1::needles, endoscopic tubes, cannulae, scalpel}}
Published	09/03/2024	hematoxylin is {{c1::positively}} charged and eosin is {{c1::negatively}} charged
Published	09/03/2024	{{c1::connective tissue}} is the matrix that supports and connects cells and tissue together. There are two parts of {{c1::connective tissue}}:&n…
Published	09/03/2024	most common cell in the cellular component of connective tissue is {{c1::fibroblasts}}
Published	09/03/2024	extracellular matrix of connective tissue is composed of{{c1::proteinsfibers (collagen, reticular, elastic)ground substance}}
Published	09/03/2024	Classifications of Connective Tissue{{c1::1. connective tissue proper (loose or dense)2. supporting connective tissue (bone or cartilage)3. fluid conn…
Published	09/03/2024	Hyalin Cartilage: Why does the tissue stain dark purple?
Published	09/03/2024	Hyaline Cartilage: What are the components of cartilage and the main cell type? Where are those main cell types in the image?
Published	09/03/2024	Hyaline Cartilage: What is the term for the area at the star? What fibers are found at the star?
Published	09/03/2024	Hyaline Cartilage: Where are the lacuna?
Published	09/03/2024	hyaline cartilage vs fibrocartilage vs elastic cartilage
Published	09/03/2024	where is hyaline cartilage located?
Published	09/03/2024	the bone matrix is mainly composed of {{c1::mineralized cartilage}}
Published	09/03/2024	you can find osteoblasts {{c1::on the edge of the osteon, or on the insides of the haversian canal}}
Published	09/03/2024	Where is the Haversian Canal? What is it, and what cells line it?{{c1::the HC is the black hole in the middle of the osteon, and its where vasculature…
Published	09/03/2024	Whats the difference between compact bone and trabecular bone? What type of bone is in this image?{{c1::compact bone is the outside of bone, has osteo…
Published	09/03/2024	Where are the osteocytes and lacuna located in this picture?{{c1::the little black dots lining in circles around the haversian canal are the lacuna.os…
Published	09/03/2024	whats the difference between lamellar and woven bone?{{c1::lamellar bone is straight and organized, woven is irregularlamellar bone is older and stron…
Published	09/03/2024	{{c1::epithelial tissue}} lines all internal and external surfaces, which means {{c1::all substances that enter/leave tissue must pass thru it}}
Published	09/03/2024	epithelial tissue has three functions:{{c1::secretionabsorptionbarrier}}
Published	09/03/2024	epithelial cells have {{c1::polarity}}, meaning they have different sides: {{c1::basal, apical, lateral}}they adhere to each other {{c1…
Published	09/03/2024	epithelial tissue is derived from a {{c1::regenerating stem cell}} and can be one layer {{c1::simple/pseudostratified}} or layered {{c1::str…
Published	09/03/2024	epithelial cells, on top of being classified by layers, can either be {{c1::surface}} or {{c1::glandualr}}
Published	09/03/2024	{{c1::simpe columnar epithelial tissue}}
Published	09/03/2024	{{c1::stratified squamous}}
Published	09/03/2024	{{c1::glandular epithelium}}
Published	09/03/2024	{{c1::pseudostratified columnar tissue}}
Published	09/03/2024	the three types of muscle tissue are {{c1::skeletal, cardiac, smooth}}
Published	09/03/2024	main things about skeletal muscle tissue:{{c1::peripheral nucleivascularized, so you'll see capillariesactin/myosin sarcomeres (A band, I band, Z disc…
Published	09/03/2024	main things about cardiac muscle:{{c1::central nuclei,smaller in shapeless organized striationsINTERCALATED DISCS}}
Published	09/03/2024	what kind of tissue? which is longitudinal, which is transverse? what are the dark spots?{{c1::skeletal muscle tissueleft is longitudinal, right is tr…
Published	09/03/2024	where is the endomysium?
Published	09/03/2024	{{c1::endomysium}} wraps around each fibril.{{c1::perimysium}} wraps fibrils into fasicles.{{c1::epimysium}} wraps fasicles into a functioning muscle …
Published	09/03/2024	Find the A band
Published	09/03/2024	Find the I band. whats it made of?
Published	09/03/2024	Where are the Z discs?
Published	09/03/2024	Z-line to Z-line is a {{c1::sarcomere}} which is the {{c1::basic contractile unit of skeletal muscle}}
Published	09/03/2024	where are the capillaries{{c1::white spots}}
Published	09/03/2024	where are intercalated discs?{{c1::intercalated discs are connections b/w adjacent cardiomyoctyes that make the cardiomyoctes beat together}}
Published	09/03/2024	where are nuclei?{{c1::dark ovals. note that they are central in cardiac muscle, unlike in skeletal muscle}}
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