TISSUES Flashcards
a group of similar cells
TISSUES
WHAT ARE THE FOUR PRIMARY TYPES OF TISSUE
- EPITHELIAL TISSUE
- CONNECTIVE TISSUE
- MUSCULAR/MUSCLE TISSUE
- NERVOUS TISSUE
provides a COVERING (skin,
the linings of the various passages inside the body).
EPITHELIAL TISSUE
SUPPORTS other tissues and binds them together (bone, blood, and lymph tissues).
CONNECTIVE TISSUE
includes striated (also called
voluntary) muscles that move the skeleton, and smooth muscle, such as the muscles that surround the stomach.
Muscle Tissue
is made up of nerve cells (neurons) and is used to carry “messages” to and from various parts of the body.
Nervous Tissue
Covers internal and external surfaces
EPITHELIAL TISSUE
Fuse cells together tightly so that passing of substances between cells are prevented
CELL JUNCTIONS
mechanically binds the cells together; contain protein filaments that serve as carrier molecules
Desmosomes
binds cells to the
basement membrane
Hemidesmosomes
- areas where the membranes of two adjacent cells join together to form a barrier; it regulates the flow of solutes and liquids according to their charge and size
TIGHT JUNCTION
help the tight junctions anchor
the epithelial cells to each other
Adhesion belts
allow for the transfer of low
molecular-weight substances, ions, and electrical signals between adjacent cells
GAP JUNCTION
has only one cell layer where every cell is in direct contact with the underlying basement membrane.
Simple epithelium
What are the 2 classifications of epithelial tissue by layer
Simple and Stratified
contain two or more layers of cells.
stratified epithelial tissue
Single layer of cube-like cells.
SIMPLE CUBOIDAL EPITHELIUM
What are the 4 classifications of epithelial tissue by shape
- Cuboidal
- Squamous
- Columnar
- Transitional
Single layer of tall, thin cells.
SIMPLE COLUMNAR EPITHELIUM
Flat or squashed
Squamous
Main characteristic is
the square
Cuboidal
Rectangular cell
appearance
Columnar
Rounded ends of cell
layering similar to
stratified
Transitional
Single layer of flat hexagonal cell.
SIMPLE SQUAMOUS EPITHELIUM
Single layer of tall cells - while some cells reach the free surface, other do not, making it appear stratified
PSEUDOSTRATIFIED COLUMNAR EPITHELIUM
Several layers of cells that are cuboidal in the basal layer and progressively flattened toward the surface
STRATIFIED SQUAMOUS EPITHELIUM
Several layers of cuboidal epithelial cells.
STRATIFIED CUBOIDAL EPITHELIUM
More than one layer of epithelial cells, but only the surface cells are columnar; deeper layer cells are irregular or cuboidal in shape
STRATIFIED COLUMNAR EPITHELIUM
consists of five or more layers of cuboidal or columnar cells.
TRANSITIONAL EPITHELIUM
A diverse primary tissue type that makes up part of every organ in the body
CONNECTIVE TISSUE
an intricate network composed of an array of multidomain macromolecules organized in a cell/tissue-specific manner
Extracellular Matrix
create the matrix
Blast
maintain the matrix
Cytes
break it down
Clasts
WBCs capable of ingesting foreign substances
Macrophages
- releases chemicals like
histamine that promotes
inflammation
Mast cells
Shapeless background which holds the cells and protein fibers
GROUND SUBSTANCE
Consists of relatively few protein fibers that form a lacy network.
Ex.
- Areolar
- Adipose
- Reticular
LOOSE CONNECTIVE TISSUE
Has a relatively large number of protein fibers that form thick bundles and dill nearly all of the
extracellular space.
Dense Connective Tissue
Composed of chondrocytes located in spaces called lacunae within an extensive matrix
Cartilage
Hard Tissue
Bone
Liquid matrix
Blood
Matrix with mostly collagen and a few elastic fibers
AREOLAR (LOOSE) TISSUE
Consists of adipocytes, or fat cells, which contain large amounts of lipids for energy storage.
ADIPOSE (LOOSE) TISSUE
Network of interlacing reticular fibers and reticular cells that are loosely arranged
RETICULAR (LOOSE) TISSUERETICULAR (LOOSE) TISSUE
Matrix consisting mostly of collagen fibers which may be arranged in the same direction (dense regular) or in many different directions (dense irregular)
DENSE COLLAGENOUS TISSUE
Has abundant elastic fibers among its collagen fibers
DENSE ELASTIC TISSUE
capable of stretching and recoiling like a rubber band with strength in the direction of fiber orientation
Dense Regular Elastic Connective Tissue
It covers the ends of bones where they come together to form joints
HYALINE CARTILAGE
Has more collagen than hyaline cartilage; Flexible and can withstand considerable pressure
FIBROCARTILAGE
Contains elastic fibers in addition to collagen and
proteoglycans
ELASTIC CARTILAGE
Name 3 types of Cartilage
- Hyaline Cartilage
- Fibrocartilage
- Elastic Cartilage
HARD TISSUE with living cells and mineralized matrix
Bone
has spaces between trabeculae, or plates of the bone and therefore resembles a sponge
Spongy bone
LIQUID MATRIX, enabling blood cells and platelets, collectively called formed elements to move through blood vessels
BLOOD
more solid, with almost no space between many thin layers of mineralized matrix
Compact Bone
Produces motion by shortening or contracting.; Composed of elongated cells called muscle
fibers that are highly specialized to generate force
MUSCLE TISSUE
Voluntary muscle and enables body movement; Attached to skeleton
SKELETAL MUSCLE
Specialized tissue for the HEART
CARDIAC MUSCLE
contain specialized gap
junctions; are important in coordinating the transitions of the cardiac muscle cells.
Intercalated disks
Forms the walls of hollow organs
SMOOTH MUSCLE
Forms the brain, spinal brain, and nerves.
NERVOUS TISSUE
sends electrical signals; the
functional unit of the nervous system
Neurons
supports and protects the neurons because they are not regenerative
Neuroglia
contains the nucleus and is the site of general cell function.
Cell Body
usually receive stimuli that lead to electrical changes.
Dendrites
Conduct electrical signals that originate from the base of an axon where it joins the cell
body and travel to the end of the axon.
Axons
support cells of the nervous
system; nourish, protect, and insulate the neurons.
Glial cells
Thin sheets or layers of tissues that cover structure or line cavities.
TISSUE MEMBRANES
Lines cavities that open to the outside of the body.
MUCOUS MEMBRANE
______________ are
the ones that secrete mucus.
Goblet cells or multicellular mucous glands
Lines cavities that do not open directly to the exterior and covers organs that lie within these cavities.
SEROUS MEMBRANE
protect the internal organs from friction, help hold them in place, and act as a selectively permeable barrier to prevent large amounts of fluids
SEROUS MEMBRANE
found in between joints
to reduce friction and allowing smooth movement within the joint
Synovial Membrane
protects the blood vessels that
pass through the bones
Periosteum
What is the technical term for our skin?
Cutaneous Membrane
____________ _________ is usually a beneficial process occurring when tissues are damaged.
TISSUE INFLAMMATION