Connective Tissue Proper Flashcards
what are the three fibers of CT proper?
Reticular (branching interwoven network, resist forces applied in multiple directions)
Elastin (stretch, memory)
Collagen (strong, tensile strength, tendons and ligaments)
What are tendons and ligaments made of?
Collagen - Dense regular CT (dense regular is packed closely together with collagen fibers!!)
General Functions (6)
-store energy
-structural framework
-protect internal structures
-transport fluids/substances
-connect tissue types
-assist immune system
3 types of loose CT
-areolar
-adipose
-reticular
Adipose Tissue
Cells: Adipocytes
Fibers: Collagen and elastin
Location: subcutaneous fat, areas with fat (breasts, buttocks), visceral fat around organs
Function: Protect organs, cushion, insulate, absorb shock, store energy
Fibrous tissue
Cells: fixed and wandering
Fibers: Mostly fibrin
Location: Kidney, spleen, lymph nodes, bone marrow
Function: Support from multiple directions (scaffolding), light and strong
Areolar Tissue
Cells: All cells and fibers present, lots of ground substance
location: endomysium, papillary layer of dermis of skin, support around organ
Function: support that permits independent movement, cushions organs, immune system, nutrients and waste
Dense Regular CT
Cells: Fibrocytes
Fibers: Collagen lined up like bamboo, super close together, some elastin
Location: Tendons, ligaments
Function: Support, hold other tissues/bones in place and together
Dense irregular CT
Cells: Fibrocytes
Fibers: Collagen in irregular orientation, some elastin
Location: Organ capsules, joint capsules, periosteum
Function: Strength in multiple directions, diffusion
Dense Elastic CT
Cells: Fibrocytes
Fibers: Mostly elastic, some collagen
Location: ligamentum flavum, ligaments supporting transitional epithelia
Functions of Dense CT (4)
-firm attachment sites
-reduce friction between muscles
-stabilize position at bones
-resistance to stretch
Synovial Membrane
Epithelial cell: Cuboidal incomplete
CT: Areolar
Location: line joint cavities (synovial)
Function: Line cavities, produce fluid
Cutaneous membrane
Epithelial cell: stratified squamous (epidermis)
CT: Areolar and dense irregular
Location: Skin
Mucous membrane
Epithelial cell: simple columnar or stratified columnar
CT: Areolar (lamina propria)
Location: Digestive, reproductive and respiratory tract
Function: Resists entry of pathogens
Serous Membrane
Epithelial cell: Simple squamous
CT: Areolar
Location: peritoneal, pleural, pericardial cavities
Function: Reduce friction
What is Fascia?
Sheets of CT, support for surrounding tissues and organs
Superficial Fascia
Location: Subcutaneous layer/hypodermis, between skin and underlying tissues
CT: Areolar
Deep Fascia
Location: Surrounds bones, muscles, nerves, blood vessels; can blend into tendon and fuse into periosteum
CT: Dense
Subserous Fascia
Location: Between deep fascia and serous membrane
