Fat Flashcards
(23 cards)
Contains:
-nerves
-blood vessels
-lymphatics
Most efficient form of calorie & water storage
Fat
-Unilocular (filled with triglycerides)
-convert androgen to estrogen
-release leptin
-eccentrically flatten nucleus
-bound by reticular fibers
White fat
-Multiocular
-smaller size cells
-lipid oxidation
Uncoupling protein is a carrier protein transporting H+ to matrix without ATP synthase, thus heat and not ATP is released
-more NADH oxidation & O2 consumption
Brown fat
-Develop into lipoblast (preadipocytes brown or white)
-develop into chrondroblast
-form the perichondrium
Mesenchymal cells (fibroblasts)
Thin ring of cytoplasm surrounding an Empty vacuole (left by the dissolved lipid droplet)
Signet ring cell
-avascular
-no nerves or lymphatics
-glycosaminoglycans (in matrix permitting diffusion between blood vessels & chondrocytes)
Cartilage
-produce ECM (fibers & ground substance)
-become chondrocytes located in lacunae
Chondroblasts
-Growth occurring inside young cartilage
-separated into own lacunae
-undergo mitosis (embryo)
Interstitial growth
-inner cellular growth of the perichondrium (adults)
-undergo mitosis
-add new cartilage to surface
-apart of repair
Appositional growth
Articular cartilage: synovial joints
-tracheal ring & bronchi
-nasal septum & laryngeal
-costal cartilages (adults) & fetal skeleton
-Type II 70% water, rich in GAGs (hyaluronic acid) basophilic
-Spherical nucleus
-isogenous groups
Hyaline cartilage
-Found where structures must withstand bending
-external ear
-Eustachian tube
-epiglottis
-laryngeal
Type II & elastic fibers
Elastic cartilage
-where dense connective tissue blends into hyaline cartilage
-intervertebral discs
-articular discs & pubic symphysis
Type I
Many collagen fibers resembling lacunae around dense irregular connective tissue
Fibrocartilage
-Outer fibrous layer (dense irregular connective tissue)
-inner cellular layer (chondrogenic cells)
NOT IN HYALINE
-in fibrocartilage only
Perichondrium
Freely moveable
Diarthrosis
Slightly moveable
Amphiarthrosis
Immovable
Synarthrosis
-Articulating surfaces enclosed within fluid-filled joint capsule (not touching)
-fibrous layer
-secrete synovial fluid (hyaluronic acid &!leukocytes)
Synovial
Between skull bones
Suture
Forms interosseous membrane
Syndesmosis
In roots of teeth & alveolar process of maxilla & mandible
Gomphosis
At intervertebral disc & pubic symphysis
Symphysis
-Hyaline cartilage connecting Bone
-in epiphyseal plate & rib cage
Synchondrosis
Degeneration of articular hyaline cartilage
Osteoarthritis
