Exercise 4: Tissues Flashcards
two principal cell types of nervous tissues
neurons,neuroglia
tissues found in the brain, spinal cord, and nerves
nervous tissues
cells that have the ability to react to various stimuli
neurons or nerve cells
tissues that exhibit the properties of irritability and conductivity
nervous tissues
ability to react to various stimuli
irritability
ability to conduct impulses
conductivity
cells that receive and send information
neurons or nerve cells
number of nerve processes a single neuron may have
one or more
information that is transmitted by neurons
nerve impulses
unbranched, nerve process
axon
branched nerve process
dendrite
nerve process that transmits impulses away from the nerve cell body
axon
nerve process that transmits impulses towards the nerve cell body
dendrite
neuron with only one nerve process
monopolar neuron
neuron with two nerve processes, one axon and one dendrite
bipolar neuron
nerve process with one axon and two or more dendrites
multipolar neuron
cells that do not conduct impulses but serve as supporting tissues
neuroglia
cells that insulate, support and protect different neurons
neuroglia
tissue specialized for contraction
muscular tissue
highly vascularized and innervated tissues
muscular tissue
tissues with the propertiea of extensibility, elasticity, and contractility
muscular tissue
units of histological organization which are cells that have become elongated
fibers
fibers with the ability to contract or shorten producing movement
muscle fibers
three types of muscle tissues
skeletal, cardiac, smooth muscle
muscular tissues that are striated and voluntary
skeletal muscle tissues
muscular tissues that form long cylindrical units with a multinucleated appearance
skeletal muscle tissues
the nuclei in skeletal muscle tissues are found
along the periphery of the long cylindrical units
muscular tissues that are striated and voluntary
cardiac muscle tissues
muscular tissues composed of smaller, branching cells and may be mononucleated or binucleated
cardiac muscle tissues
muscular tissues characterized by the presence of intercalated disks
cardiac muscle tissues
dark bands where cardiac muscle cells connect end to end
intercalated disks
intercalayed disks are made of
gap junctions
purpose of gap junctions within intercalated disks
facilitates passage of ions from cell to cell that results in rapid conduction of electrical impulse across the heart
muscular tissues that are non-striated and involuntary
smooth muscle tissues
made of spindle or fusiform-shaped cells
smooth muscle tissues
spindle fibers are also called
fusiform-shaped cells
muscular tissues found in the walls of hollow internal structures
smooth muscle tissues
muscular tissues that contracts much more slowly than other muscle types
smooth muscle tissues
most abundant primary tissue in the body
connective tissue
tissue for connecting and binding body parts together
connective tissue
tissue protecting the organs
connective tissue
tissues providing a framework for movement of muscles
connective tissue
tissues serving as insulators
connective tissue
tissues acting as a liquid medium for transporting substances throughout the body
connective tissue
tissues including the loose and dense connective, cartilage and blood
mature connective tissue
matrix of dense and loose connective tissues, bone and blood is made of
different connective tissue
extracellular matrix of loose connective tissues is made of
fibroblasts
extracellular matrix of cartilagenous tissues is made of
chondroblasts
extracellular matrix of cartilagenous tissues is maintaned by
chondrocytes
extracellular matrix of bone tissues is made of
osteoblasts
extracellular matrix of bone tissues is maintained by
osteocytes
extracellular matrix of blood tissues is made of
plasma
enables connective tissues to form packing materials around organs
extracellular matrix
enables connective tissues to bear weight
extracellular matrix
enables connective tissues to withstand abrasion and other abuses
extracellular matrix
enables connective tissues to absorb large amounts of water to serve as a reservoir in the body
extacellular matrix
most connective tissues are highly vascularized
true
tendons and ligaments have no blood supply
falsethey have bad supply of blood
cartilages are vascular
falseavascular
four types of connective tissues
connective tissue proper,cartilages,blood/vascular,bone/osseous
types of loose connective tissues
areolar,reticular,adipose
types of dense connective tissue
dense regular,dense irregular
connective tissue that functions as universal packing material that binds organs together and keeps them in their proper position
areolar connective tissue
most abundant type of connective tissue
areolar connective tissue
connective tissue composed of fibroblasts, collagenous, elastic and reticular fibers in a semi-fluid ground substance
areolar connective tissue
means small open space
areola
when areolar connective tissues are viewed through a microscope
most of the matrix appears to be composed of small empty spaces
connective tissue that is predominantly composed of reticular fibers which are synthesized by reticular cells
reticular connective tissue
fibroblasts that synthesize more reticular fibers than collagenous fibers
reticular connective tissue
forms stroma in lymphoid organs
reticular connective tissue
forms the hypodermis or subcutaneous tissue beneath the skin where it serves as an insulator, protecting the body from extreme heat and cold
adipose connective tissue