This is important because myelinated nerves conduct impulses more quickly than non-myelinated nerves. They form myelin sheaths on the axons of a neuron, which are lipid-based insulation that increases the speed at which the action potential, can travel down the axon.
Sensory neurons that have one process that splits into two branches, forming the axon and dendrite Unipolar brush cells: Microglia are small glial cells.
These cells are smaller than neurons. On the basis of function neurons can be differentiated as Sensory afferent nerves: The cell processes connect to those of other mesenchymal cells through gap junctions. Aids formation of the blood-brain barrier. The epineurium is the outermost layer of dense connective tissue enclosing the peripheral nerve.
For example, type I collagen provides resistance to stretch in bone tissue, while type IV collagen makes up the suprastructure of the basement membrane.
Have 3 or more processes coming off the soma cell body. Medium sized spiny neuron Glia Glia are the supporting cells of nervous tissue and significantly outnumber neurons. Their functions within the nervous system depend on the specific type of neuroglia: Collagen fibers are made up of many subunits, called collagen fibrils, that appear striated under electron microscopy.
Related Atlas Images Epithelial Tissue Epithelial tissue is a highly cellular tissue that overlies body surfaces, lines cavities, and forms glands. Proper connective tissues Proper connective tissues include loose connective tissue, often referred to as areolar tissue, and dense connective tissue.
When adipocytes are clustered in large numbers they are referred to as adipose tissue. Finally, gap junctions perform the opposite function.
Tight junctions form a solid barrier to prevent movement of molecules between adjacent epithelial cells. The three layers of connective tissue surrounding each nerve are: Connective tissue cells do not oppose each other but rather are separated by a large extracellular matrix.
Microvilli are small processes projecting from the apical surface to increase surface area. The extracellular matrix is made up of a ground substance and protein fibers.
Supporting cells are non conducting cells that are in intimate physical contact with neurons. This is part of the section about the structure and function of different tissue types, which is related to the section about histology and cells incl.
A neuron consists of a large cell body — cyton perikaryon or soma, thin protoplasmic processes-dendrites and a long process-axon. When the action potential travels to the axon terminal, neurotransmitters are released across the synapse and bind to the post-synaptic receptorscontinuing the nerve impulse.
The glia found within the central nervous system, which consists of the brain and spinal cord, are called neuroglia. They release chemicals from their axons into blood, instead of into the synapses. Oligodendrocytes differ from astrocytes listed higher-up this page by having fewer and thinner processes and no gap junctions.
These projections are referred to as axons or dendrites. Contraction of skeletal muscle tissue is rapid and strong.Introduction to tissues (Epithelial, Connective, Muscle and Nervous tissue) A tissue is a group of cells, in close proximity, organized to perform one or more specific functions. There are four basic tissue types defined by their morphology and function: epithelial tissue, connective tissue, muscle tissue, and nervous tissue.
Cells of nervous tissue are nerve cells (neurons) and supporting cells inside the CNS is called neuroglia and in the peripheral nervous system are called Schwann cells. Supporting cells are non conducting cells that are in.
Structure and Functions of Nervous Tissue Note: This is part of the section about the structure and function of different tissue types, which is related to the section about histology and cells incl. structure of animal cells, cell division, mitosis, meiosis.
Nervous Tissue. Nervous tissue is one of four major classes of tissues.
It is specialized tissue found in the central nervous system and the peripheral nervous system. It consists of neurons and supporting cells called neuroglia. The nervous system is responsible for the control of the body and the communication among its parts. The epineurium is the outermost layer of connective tissue surrounding a peripheral nerve.
It is made of dense irregular connective tissue and usually contains multiple nerve fascicles as well as blood vessels which supply the nerve. Cellular Components of Nervous Tissue Patrick R.
Hof, Esther A. Nimchinsky, Grahame Kidd, Luz Claudio, and Bruce D. Trapp Several types of cellular elements are integrated to constitute normally functioning brain tissue. The neuron is .Download