5.1 – The Study of Tissues Flashcards
tissue (def)
group fo similar cells and cell products that arise from the same region of the embryo and work together to perform a specific structural or physiological role in an organ
4 primary tissues
epithelial
connective
nervous
muscular
matrix (def)
aka extracellular material
surrounds the cell
epithelial tissue (def)
tissue composed of layers of closely spaced cells that:
cover organ surfaces
form glands
serve for protection, secretion, and absorption
epithelial tissue (location)
epidermis
inner lining of digestive tract
liver and other glands
connective tissue (def)
tissue w/ usually more matrix than cell volume
often specialized to support and protect organs
and binds tissues and organs to each other
connective tissue (location)
tendons and ligaments
cartilage and bone
blood
nervous tissue (def)
tissue containing excitable cells specialized for rapid transmission of coded information to other cells
nervous tissue (location)
brain
spinal cord
nerves
muscular tissue (def)
tissue composed of elongated, excitable muscle c ells specialized for contraction
muscular tissue (location)
skeletal muscles
heart (cardiac muscle)
walls of viscera (smooth muscle)
matrix is composed of…
fibrous proteins and a clear gel known as ground substance/tissue fluid/extracellular fluid (ECF), or interstitial fluid
ground substance (def)
clear gel in matrix
contains water, gases, minerals, nutrients, wastes, hormones, and other chemicals
cells obtain their oxygen, nutrients, and other needs from ground substance
cells release metabolic wastes, hormones, and other products into ground substance
the extracellular material of a tissue is called the ___
matrix
___ fluid is any body fluid that is not contained in the cells
extracellular
ground substance is best described as what?
the clear gel portion of the matrix
in histology, a very thin slice of a tissue is referred to as what?
a histological section
what is a group of similar cells that performs some discrete function w/in an organ described as?
tissue
what is the extracellular material of a tissue called?
matrix
the tissue found covering body surfaces, lining body cavities, forming the internal and external linings of many organs, and constituting most gland tissue is ___ tissue
epithelial
interstitial fluid is the matrix material located ___ the cells
outside
extracellular fluid, interstitial fluid, tissue gel, and tissue fluid are all different names for what term?
ground substance
a tissue found at surfaces, composed of one or more layers of closely adhering cells, is called ___ tissue
epithelial
what is a histological section?
a thin slice of tissue prepared for microscopic observation
