Structure. Nervous tissue is composed of neurons, also called nerve cells, and neuroglial cells. Four types of neuroglia found in the CNS are astrocytes, microglial cells, ependymal cells, and oligodendrocytes.
What is tissue in nervous system?
Nervous tissue is found in the brain, spinal cord, and nerves. Nervous tissue also includes cells that do not transmit impulses, but instead support the activities of the neurons. … These are the glial cells (neuroglial cells), together termed the neuroglia.
What are the major tissues in the nervous system?
Nervous tissue is grouped into two main categories: neurons and neuroglia. Neurons, or nerves, transmit electrical impulses, while neuroglia do not; neuroglia have many other functions including supporting and protecting neurons.
How is nervous tissue formed?
The nervous system develops from the ectoderm following an inductive signal from the mesoderm. The initial mesodermal cells condense to form the notochord, which elongates under the primitive streak along the anterior—posterior axis of the developing embryo.
What epithelial tissue does?
Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.
What are tissues?
Tissue is a group of cells that have similar structure and that function together as a unit. … There are four main tissue types in the body: epithelial, connective, muscle, and nervous. Each is designed for specific functions.
What are the 3 types of nervous tissue?
4.4B: Types of Nervous Tissue
- Microglial Cells.
- Ependymal Cells.
- Satellite Cells.
- Schwann Cells.
What are types of tissue?
There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).
How is nervous tissue different from other tissues?
Nervous tissue the most complex of the four basic tissues, is composed of nerve cells, the neurons and supporting cells, the neuroglia. Unlike other basic tissues, the nervous tissue almost lacks intercellular substance.
What is the epithelial tissue made of?
Epithelial tissue is made up of epithelial cells. The cells can be different shapes and can be arranged in a single layer or multiple layers depending on where they are in your body and what kind of functions they have.
What organs are made up of epithelial tissue?
The lining of the mouth, lung alveoli and kidney tubules are all made of epithelial tissue. The lining of the blood and lymphatic vessels are of a specialised form of epithelium called endothelium.
What type of tissue are tendons and ligaments made of?
Tendons and ligaments are mainly composed of type I collagen fibers surrounded by a mesh of loose connective tissue. The whole tendon transmits forces from muscle to bone. However, it also shows viscoelastic behavior such as creep or stress relaxation.