Karteikarten
ASSIGNMENT 4: CONNECTIVE TISSUE
Karten in diesem Stapel (45)
- 1Connective tissue is found where in the body?everywhere!
It is the most abundance tissue type by WEIGHT - 2Connective tissue is derived from? and is composed of?MESODERM
and is composed of:
nonliving extracellular matrix
(all connective tissues consist of cells embedded in a nonliving matrix) - 3The nonliving matrix surrounds and separates the cells and it provides important structural and nutritional support that enables connective tissue cells to?exist further apart than epithelial cells
- 4unlike epithelial tissue, connective tissue is? (blood)Vascularized (contains a blood supply)
- 5Connective tissue is made up of 3 components?1. Ground substance
2. extracellular fibers
3. cells - 6Extracellular fiber + ground substance =extracellular matrix
- 7Examples of connective tissue are?Blood
tendon
fat
cartilage
bone - 8Why does connective tissue take on different appearances and textures?variations in the GROUND SUBSTANCE and in the FIBER enable the tissue to take on many different qualities
- 9The ground substance can be either?Liquid
Gel
or
Solid - 10What are the 3 main functions of the ground substance?1. protects cells in tissue
2. is the medium for which exchange of nutrients and waste with bloodstream
3. acts as a barrier against microorganisms - 11Ground substance is made of ?glycoprotein called glycosaminoglycans or GAGs and the most common one is hyaluronic acid w/ protein
- 12What are the 3 types of fibers in connective tissue?1. collagenous
2. reticular
3. elastic - 13which fiber is most commonly found in the body ?collagenous
- 14Collagenous fibers are found where and why?IN ligaments and tendons because they are strong and withstand lots of pulling and stretching.
- 15Collagenous fibers are made up of?the protein collagen
- 16Collagenous fibers are also known as ?White fibers
- 17Reticular fibers are like collagenous butlike in that they are made up of COLLAGEN but they are not thick or strong but delicate and provide support for highly cellular organs like lymph nodes, bone marrow, and endocrine glands, and liver
- 18Elastic fibers are made up ofthe protein Elastin
- 19Elastic fibers are similar to reticular fibers because ?they are branched and form a network but they are not strong like collagenous
- 20Elastic fibers are found?in tissues that are subject to lots of stretching like vocal chords, lungs, and skin
- 21Elastic fibers are also known as?yellow fibers
- 222 major categories of cells in connective tissue arE?1. Fixed
2. Transient - 23Fixed cells=cells that remain in connective tissue
- 24Transient cells=Cells that pass in and out of connective tissue
- 25The ICONIC fixed cell=Fibroblast
- 26Fibroblast=a large cell that makes and secretes both the fibers and ground substance characteristic of their particular matrix.
- 27As the cell matures and the matrix is formed, the fibroblasts take on a less active and become?-cyte
fibrocyte
But if more matrix is needed later they return to
-blast - 283 common Wandering cells?1. Leukocytes
2. Mast cells
3. Macrophages - 29Leukocytes are?WHITE BLOOD CELLS that are found in blood
- 30Leukocytes move?IN and out of connective tissue in LARGE numbers when there is an infection
- 31Leukocytes are ___ than RBCare larger but can squeeze through walls of blood vessels into surrounding tissue, which is a process called
DIAPEDESIS - 32Leukocytes protect the body by?1. Engulfing and digesting invading microbes
2. Making antibodies that attach to microbes and DESTROY THEM - 33Mast cells are?Oval cells that have many dark-staining granules in cytoplasm
- 34Mast cells dark staining granules contain?Histamine and Heparin
(biochemicals that initiate an inflammatory response when released into the tissue) - 35Histamine=increases blood flow to an area by making capillaries leaky
- 36Heparin=prevents blood from clotting so pathways for increased blood flow remain open
- 37Mast cells are found near?blood vessels where they can release their contents directly into the bloodstream to protect against foreign bodies. When they come in contact with these foreign bodies they burst releasing their granules
- 38Macrophages are?Massive phagocytizing scavengers that can be either fixed or transient in connective tissue
- 39Macrophages do what?Engulf microbes, dead cells, and debris and digest it in lysosome
- 40Mobile Macrophages are drawn where?To sites of infection or inflammation where they aggressively move through and engulf any micro invaders
- 41Macrophages go by different names -Liver -Brain -Loose connective tissueKupffer cells (liver)
Microglial cells (brain)
Histocytes (loose connective tissue) - 42What are the 2 broad categories of connective tissue?1. Connective tissue proper
2. Specialized connective tissue - 43Connective tissue proper is further divided into?Loose Connective
+
Dense Connective - 44Loose connective tissue contains?Areolar
Adipose
Reticular tissue - 45Dense connective tissue contains?Dense regular
Dense irregular
Elastic tissue
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- G Anatomy & Physiology Karteikarten am ASSIGNMENT 4: CONNECTIVE TISSUE , erstellt von Ryan Kuser am 12/09/2016.
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- Ryan Kuser
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