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A&P- LAB: C/T
Connective tissue
| Question | Answer |
|---|---|
| What is the most abundant and widely distributed of the tissue types? | Connective tissue |
| What are the types of adult connective tissue? | 1. Connective tissue proper 2. Cartilage 3. Bone 4. Blood |
| What are the subclasses of connective tissue proper? | 1. Loose connective tissue 2. Dense connective tissue |
| What are the functions of connective tissue | 1. protect 2. Support 3. Insulate 4. bind other tissues together |
| What are the sub-subtypes of loose connective tissue proper | 1. areolar 2. adipose 3. reticular |
| What are the sub-subtypes of dense connective tissue proper | 1. Dense regular connective tissue proper 2. Dense irregular connective tissue proper 3. elastic connective tissue proper |
| What are ligaments and tendons made of? | Dense regular connective tissue |
| What do tendons and ligaments do? | Bind the bones together or connect skeletal muscles to bones |
| What does areolar connective tissue do? What is it made of? | Made of loose connective tissue proper soft packing material that cushions and protects body organs |
| What does adipose tissue do? What is it made of | Made of loose CTP provides insulation for body tissue and source of stored energy |
| Where can areolar CTP be found | underneath epithelia and surrounding capillaries |
| What are all connective tissue derived from? | Embryonic tissue. mesenchyme |
| What are degrees of vascularity for types of connective tissue. | Most connective tissues has rich blood supply exception: - Cartilage: Avascular - Dense connective tissue - poor vascularization |
| What is the extracellular matrix? What is it made of? where can it be found? | - made of noncellular, nonliving material - located between cells of connective tissue - exact composition/amount varies btx CT |
| What are the components of the extracellular matrix | 1. Ground substance 2. fibers |
| What is the ground substance composed of? | interstitial fluid Cell adhesion proteins proteoglycans |
| Where is firm matrix found in? | in cartilage and bone |
| What is Lucunae | cavities in the matrix that hold connective tissue cells in cartilage and bone |
| What are types of fibers? | Collagen (white): thicker Elastic (yellow): thinner Reticular (fine collagen): thinnest |
| What is the role of fibers? | To provide support |
| What are the most abundant fibers? | Collagen |
| What type of tissue is considered the model, or prototype of connective tissue d/t its clear common structural plan | Areolar connective tissue |
| What tissue has all three varieties of fibers? How are they arranged? | Areolar tissue Sparse transparent gel-like ground substance |
| What cell secretes matrix | Fibroblast |
| What are the more durable connective tissues? What is th consistency of its ground substance | Bone, cartilage, and connective tissue Firm ground substance with more fibers |
| Embryonic connective tissue: Mesenchyme | embryonic CT Gel-like ground substance that contains fibers star shaped menchymal cells Function: creates all other CT Found: in embryo |
| CTP, loose CT: areolar | Matrix: Gel-like w/3 fibers Function: wraps and cushions organs macrophages phagocytize bacteria and plays role in inflammation Holds/ conveys tissue fluid Location: under epithelia (lamina propria of mucous membranes, package organs, capillaries) |
| CTP: loose CT: adipose | Same matrix as areolar but sparse packed w adipocytes nucleus are to the side because of fat Function: energy reserve, insulates, supports, protects organs Location: under skin, around kidneys, eyeballs, within abdomen, in breast |
| CTP: Loose CT: reticular | Description: reticular fibers in loos ground substance Function: form internal skeleton (stroma) that support cell types Location: lymphoid organs (lymph nodes, bone marrow, and spleen) |
| CTP: Dense regular CT | parallel collagen fibers, w elastic fibers, w/ major cell type: fibroblast Function: attach muscle to bone/muscle; bone/bone; withstands tensile stress when force pulls 1 direction Location: tendons, ligaments, aponeuroses |
| CTP: (dense) elastic connective tissue | high proportion of elastic fibers, dense Function: allows recoil after tissue stretches, maintains pulsatile flow of blood through arteries aids passive recoil of lungs after inspiration Location: large artery walls, verterbral ligame |
| CTP: Dense irregular CT | irregularly arranged collagen fiber, elastic fiber, and fibroblast Function: withstands tension exerted in many directions, provdes structural strength Location: dermis of skin, submucosa of digestive tract, fibrous capsules of organs and joints |
| Cartilage: Hyaline | no shape but firm matrix, formed by collagen fibers and chondroblasts make the matrix, after maturing (chondrocytes) in the lacunae supports, reinforces, resilient cushion, resists compressive stress embryonic skeleton, ends of long bones, nose, lary |
| Cartilage: Elastic | similar to hyaline cartilage, but more elastic fibers in matrix maintains shape of structure allowing great flexibility supports external ear and epiglottis |
| Cartilage: Fibrocartilage | matrix similar to hyaline cartilage, but less firm. mostly thick collagen fibers Function: tensile strength w/ability to absorb compressive shock location: intervertebral disc, pubic, symphysis, discs of knee join |
| Bones: osseous tissue | hard calcified matrix containing many collagen fibers, osteocytes lie in lacunae, vascularized supports, protects, acts as levers, stores calcium, minerals, and fat. hematopoiesis (blood cell formation) made of bones |
| Blood | red and WBC in plasma (fluid matrix) Function: transport of respiratory gases, nutrients, wastes, and other substances Location: contained within blood vessels |
| Mast cell | stuffed full of granules, dark staining in cytoplasm releases histamine that makes capillaries more perneable durine inflammation and allergies |
| What are the 3 fibers found in the areolar matrix? and what else can be found? | Collagen, fibroblast, elastic fibroblasts macrophages mast cells some WBC |
| Canaliculi | microscopic canals between the lacunae of ossified bone. |
| Inner vs outer aspect of periosteum layer | The outer layer of compact bone, contains the superficial fibrous layer of periosteum and deep cellular layer. |
| Perichondrium | Both elastic cartilage and hyaline cartilage are surrounded by a membrane called the: |
| connective tissue matrix is composed of | ground substance and protein fibers |
| Out of bone, blood, lymph, and nervous tissue. Which one is not connective tissue | nervous tissue |
| where are the chondrocytes located in hyalin cartilage? | in lacunae that they create. |
| The presence of lacunae indicates what? | that the tissue is cartilage |
| what releases histamines | mast cells |
| What protein fibers provide strength | collagen fibers |
| what is the outer membrane of cartilage | perichondrium |
| what is a column of bone tissue | osteon |
| what is the small space surrounding a chondrocyte | lacunae |
| what produces matrix fibers | fibroblast |
| what is the extracellular material | matrix |
| what protein fibers provide flexibility | elastic fibers |
| what is the syrupy fluid of matrix | ground substance |
| what is the nutrient channels in bone | canaliculi |
Created by:
cguerrero8
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