The outermost connective tissue covering of nerves is the
Peripheral nerve: Anatomy
Types Of Connective Tissue - What Is Connective Tissue - Functions Of Connective Tissuethe
Nervous System Lab Learning Objectives Draw a neuron and label its key histological and structural features. Explain the microscopic structure of a nerve fiber, including the structure of the myelin sheath and connective tissue layers. Identify the four types of glial cells, their structures, and their functions. Explain the general layout of the spinal cord, cerebrum, and cerebellum, and identify key cell types in each region. Distinguish some important pathological examples from normal tissue. Keywords This is an experimental portion of the website.
Nervous tissue , also called neural tissue or nerve tissue , is the main tissue component of the nervous system. The nervous system regulates and controls bodily functions and activity and consists of two parts: the central nervous system CNS comprising the brain and spinal cord , and the peripheral nervous system PNS comprising the branching peripheral nerves. It is composed of neurons , or nerve cells , which receive and transmit impulses, and neuroglia , also known as glial cells or glia, which assist the propagation of the nerve impulse as well as provide nutrients to the neurons. Nervous tissue is made up of different types of nerve cells, all of which have an axon. An axon is the long stem-like part of the cell that sends action potential signals to the next cell. Functions of the nervous system are sensory input integration, control of muscles and glands , homeostasis , and mental activity. Nervous tissue is composed of neurons , also called nerve cells, and neuroglial cells.
Within a nerve, each axon is surrounded by a layer of connective tissue called the endoneurium. The axons of a nerve. Starting with the outermost wrapping of.
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The nervous system enables the body to respond to continuous changes in its external and internal environments. It controls and integrates the functional activities of the organs and organ systems. Nervous system cells consist of neurons and neuroglia. Neurons transmit nerve impulses to and from the central nervous system CNS , thereby integrating motor and sensory functions. Neuroglial cells support and protect the neurons. Although both Schwann cells and oligodendrocytes are in charge of axon myelination, they have distinct morphological and molecular properties and different embryonic origins, the neural crest and the neural tube, respectively.
As a result, which of the following would you expect? She has lost feeling in her lower body. Her doctor tells her that swelling is compressing a portion of her spinal cord. Which part of her cord is likely to be compressed? The waiter brings a very hot plate, telling you to be careful about touching it. You touch it anyway, producing a pain sensation in your fingers, a withdrawal of your hand, and an auditory comment of what you are thinking. Her frightened parents take her to the emergency room, where she is examined.
12.4A: Structure of a Nerve
A nerve is the primary structure of the peripheral nervous system and is composed of bundles of axons. A nerve is an enclosed, cable-like bundle of axons the projections of neurons in the peripheral nervous system PNS.