Tissues: Connective

fibers are loosely arranged (not in bundles) and cells are intermingled loosely in matrix

• packing agent
• fills in space 
• helps anchor BV and nerves to organs

connective tissue component of serous membranes all over; no specific place

• prevalent cell: adipose cell
• clusters of adipose cells bound tightly together and matrix is found between clusters

• store fat for energy reserves 
• insulator
• shock absorber
• helps protect organs from mechanical injury

• hypodermis
• bony eye sockets
• kidney capsule made of adipose

• fibers (protein fibers) are densely packed in matrix, forming bundles
• fibroblast squeezed between the bundles of fibers
• regular because all fibers are in one direction

• strength in the direction of stress
• strength where tension is exerted
• helps reduce pull (on muscles, for example)

ligaments and tendons

• tight bundles in all different directions
• fibroblast squeezed between bundles of fibers
• fibers (protein fibers) are densely packed in matrix forming bundles

• relieve stress in many different directions
• provide strength in many different directions

dermis of skin

• where prevalent fiber chondroblasts [cytes] 
• prevalent fiber is collagenous, but you don't see it

• form 
• protection
• facilitates movement by reducing friction at movable joints

• found at articulating ends of bones that form a movable joint
• cartilage of fetal skeleton
• preformed cartilage model
• rings of trachea to prevent collapse

• cellular matrix
• osteoblasts--> osteocytes
• osteoclasts
• calcification hardens it 
• BV and canaliculi run through it; spongy and compact bone
• after bone is laid down, hydroxy appetite occurs and it hardens
• covered by periosteum
• highly vascular

• skeleton
• long bones of body 
• (diaphysis= compact bone to take stress)

• form
• lever in movement 
• protection of internal organs

• transport of materials 
• temperature regulation 
• defense

• found in circulatory system
• carreis cells of body's defense system

• cells are three types: RBCs, WBCs, and platelets
• matrix=m fluid called plasma (mostly water)
• WBC= nucleus
• RBC= no nucleus