Activity 9 CONNECTIVE TISSUE Flashcards
Distributed throughout the body but is never exposed to the outside environment
Connective tissue
Three basic components of connective tissue
Specialized cells
Fibers
Ground substances
Functions performed by connective tissue
A) supports/protects some parts of the body
B) connects organs
C) fills up spaces between or within organs
Types of connective tissue
A. Areolar or Loose
B. Dense
C. Cartilage
D. Bone or osseous
E. Adipose
Most numerous and largest fiber
Collagen fiber
Thick and somewhat wavy and exhibit faint longitudinal striations
Collagen fiber
Present in varying abundance in all types of connective tissues
Collagen fiber
Flexible but offer great resistance to a pulling force and abundant in the dermis, bone, tendon, dentin, etc.
Collagen fiber
Fine, single fiber which is usually straight and form branching and anastomosing network
Elastic fiber
Fiber that has the ability to be stretched by a small force and return to it’s original dimension when force is removed.
Elastic fiber
What organs are rich in elastic fibers?
Aorta and lungs
Very Slender fiber which tends to form delicate network rather than coarse bundles.
Reticular fiber
This fiber persist in delicate networks surrounding adipose cells, smooth muscle cells, sarcolemma of striated muscle, endoneurium of nerve cells and in close association with basal lamina of most epithelia
Reticular fiber
One of the fixed cells of a loose connective tissue
Fibroblast
Shape of the cell in connective tissue
Flattened with oval nucleus
Appears like a fibroblast but nucleus is smaller
Inactive macrophage
Type of dense connective tissue that is found where great tensile strength is required, such as in ligaments and tendons
Dense Regular connective tissue
Collagen fibers are compactly arranged in bundles and between those are rows of fibroblasts.
Dense Regular connective tissue
Collagenous fibers are larger, more numerous, and more concentrated.
Dense irregular connective tissue
Elastic fibers are larger and more numerous
Dense irregular connective tissue
Specialized form of tissue characterized to have no nerves or blood vessels of its own
Cartilage
Types of cartilage in the animal body are
hyaline, elastic, and fibrocartilage
Most common cartilage
Hyaline
A thin membrane outer covering of a cartilage and is comparable to the periosteum of a bone
Perichondrium
Substance of the cartilage secreted by chondroblast
Matrix
Young cartilage cell
Chondroblast
Tiny space containing a cartilage cell, usually surrounded by darken capsule when seen under the microscope
Lacuna
Cartilage cell found in the lacuna
Chondrocyte
There is a presence of elastic fiber in the matric
Elastic cartilage
The matrix is permeated with collagenous fibers
Fibrocartilage
Small chondrocytes in lacunae are
usually distributed in rows within the fibrous matrix
In fibrocartilage, ____________ is absent because fibrous cartilage forms a transition area between hyaline and tendon or ligament
Perichondrium
The outermost covering of the bone that contains blodd vessels, nerve, and osteogenic cell
Periosteum
Made up of spindle-shaped bone cells; continuous, uninterrupted, and arranged around the bone’s circumference.
Periosteal lamella
Structural units of the compact bone. More or less oval in shape, closely packed to constitute bulk of the bone
Haversian systems
Intact haversian system includes:
Haversian canal
Concentric lamella
Lacunae
Canaliculi
Osteocyte
a small canal found at the center of the Haversian system.
It contains the bone marrow and communicates with blood vessels in the central marrow cavity of the bone shaft it is responsible of the distribution of nutrients to the bone cells.
Haversian canal
called Haversian lamella
This is the bone matrix in form of continuous rings arranged around the Haversian canal
Concentric lamella
tiny spaces found between the rings of concentric lamellae. They contain the bone cells called osteocytes.
Lacunae
numerous branching little canals which cerve to connect with neighboring lacunae for the purpose of distribution of nutrients
Canaliculi
Mature cell usually found at the lacuna
Osteocyte
Tissue that fill up spaces between organs.
Seen in subcutaneous layer of skin and other parts
Adipose or fat tissue
Round cells are called
Adipocytes
