4th Tissue Function

According to Carlson (YEAR), neuron (nerve cell) is defined as,” the information-processing and information-transmitting element of the nervous system”. The shape and variety will depend on the specialized job they perform. The majority of neurons have in common in one form or another, the four structures or regions: the cell body or soma, axon, dendrites; and terminal buttons. The soma or the cell body contains the nucleus which regulates all cell activity. Dendrites is derived from the Greek work Dendron, for tree, because they resemble trees. The dendrite is attached to the cell body of the neuron which receives information and

The nervous system is made up of basic units called neurons. The main role of the neurons is to receive, integrate and transmit information throughout the body. There are some neuroglial cells found in nervous system aswell which provide support to the neurons by giving protection and nourishment Neurons have nerve processes that looks like finger like projections extended from the nerve cell body. They also contain axons and dendrites which enable them to transmit signals throughout the body. Normally, axon carry signals away from the cell body and dendrites carry signals toward the cell body according to Regina Bailey (2013). Neurons have three different shapes: bipolar, unipolar and multipolar where bipolar has two neuronal processes coming out of the cell body, unipolar has only one neuronal process coming out of the cell body and multipolar has many neuronal processes coming out of the cell body.

Nervous tissue is the main component of the two parts of the nervous system. The brain and spinal cord of the central nervous system (CNS), and the branching peripheral nerves of the peripheral nervous system PNS. The entire CNS is encased in bone. The brain is within the cranium, while the spinal cord runs within a canal through the vertebrae. Within its bony case, the entire CNS is bathed in a cerebrospinal fluid. Therefore, CSF analysis is more effective than a blood test for understanding CNS

In this assignment i will be describing Epithelial and connective tissues, the organs where they are found and their roles.

Neurons are what send nerve impulses from one part of the nervous system to the other. Neuroglia is the “glue” that holds the neurons together. (Campbell, 2016). There are multiple parts of the neuron that help to transmit the impulses. A neuron includes the cell body, nucleus, dendrites, axon, myelin sheath, and axon ending. The main portion is the cell body which holds the nucleus or DNA of the cell (Boeree, 2009). Dendrites receive the message from other neurons while axons carry the impulse to another neuron. The myelin sheath serves as insulation for the impulses so they can travel faster. The axon ending then sends the impulse on to another neuron and the process is completed for that impulse (Boeree, 2009). Nerve tissue helps to run the nervous system and the impulses sent in the body from neurons. All of the tissues of the body work together in order for the body to function and work as it

The four types of tissues consist of Epithelial, Connective, Muscle, and Neural tissue. Epithelial tissue consists of many layers of cells which provide protection, manages permeability, sensation, and produces specialized secretions. It takes a special cell to be able to produce secretions, and these are called gland cells. Cells like fibroblasts, macrophages, fat cells, and mast cells help perform the function of Connective tissue. Connective tissue’s many functions consist of protection, transportation of materials, storage of leftover energy, and defense. Muscle Tissue is specialized for contraction, so all cells belonging to the Muscle tissue must be able to help

The central nervous system is composed of millions of nerve and glial cells, together with blood vessels and a little connective tissue. The nerve cells or neurons in the blood play a very major role in the transmission and reception of signals. The glial cells, termed neuroglia, are characterized by short processes that have special relationships to neurons, blood vessels, and connective tissue . These cells play a very major role in receiving and transmitting of the signals on stimulating while holding the corresponding hasta mudras.

Neuronal cell bodies also vary widely both in size (small, medium, large, and giant) and in shape (star-shaped, fusiform, conical, polyhedral, spherical, pyramidal). There are over 200 different kinds of neurons. Neurons can be classified by the direction that they send information. Scientists have also categorized neurons into four groups that are based on shape. Multipolar neurons are the most common in the vertebrate nervous system and have the structure of a model neuron: a cell body from which a long axon extends and dendrites branch from the cell body. Unipolar neurons are the most common invertebrate neuron and have structure of where the dendrites branch off from the axon instead of the cell body. Bipolar neurons have two axons extending from the cell with the dendrites and synaptic terminals on each side. Pseudo-unipolar neurons sense pressure, touch, and pain. Pseudo-unipolar have no true dendrites. They have two axons that extend from the cell body and synaptic terminals at the end. Scientists also classify neurons categorized by function and the direction it sends information. For example there are four basic types of the functional cell; sensory (or afferent) neurons, motor (or efferent) neurons, and interneurons. Sensory neurons send information from sensory receptors (ex. in skin, eyes, nose, ears, and tongue) toward the central nervous system. Motor neurons carry

The normal function of the central and peripheral nervous systems depend highly on the successful functionality of afferent and efferent neurons. Neurons are cells that have the ability to transmit sensory and motor messages throughout the body. These signals are promoted by electrically insulating myelin sheaths that surround the axons of neurons. These sheaths are produced by Schwann cells and other glial cells. When a neuron is damaged, a communicative circuit is compromised and essential signals cannot be transmitted throughout the body.

Nervous tissue makes up the brain and nervous system. It is used to transmit information around the body for a huge variety of tasks (for example, controlling muscles). Apart from in the brain, it is also found in the spine and in sensory organs such as the eyes. It is made up of cells called neurons which transmit electric-chemical signals around the body and centrally to the brain. For example, when we feel pain in our finger, it is caused by sensory input to the nerve cells in the finger, which transmit an electric impulse to the brain. The brain then “translates” this impulse into what we call pain.

The nervous system coordinates voluntary and involuntary actions of animal bodies and is in charge of transmitting signal from one part of the body to another part. It is divided into two main systems, the Central Nervous System (CNS) that contains the brain and the spinal cord, and the Peripheral Nervous System (PNS) that includes mostly all nerves connecting the CNS to every part of the body (Martini et al., 2005). The entire nervous system relies on the good functioning of specialized cells: the neurons that convey electrical signals; and the neuroglia that is composed of several types of specialized cells with different functions either involved in the structure of the nervous system, the enhancement of the signal transmission or even in the defense mechanism.

The nervous system consists of three major structures: the brain, the spinal cord, and the peripheral nerves. The brain is

Nervous tissue is the main component of the nervous system which consists of the brain, spinal cord, and nerves. This tissue consists of neurons and supporting cells which are the two major cell types of nervous tissue. Neurons are cell processes that may quite long in structure as the extend from the cell body which contains the nucleus. Neurons function as transmitters of electrical signals from sensory receptors to effectors such as muscles and glands. Nervous tissue supporting cells primarily support and protect the neurons (Marieb & Hoehn, 2013, p. 140).

There are 4 types of tissue in our body.They are the epithelial,connective,nervous,and muscular tissue.Epithelial covers the whole surface of the body.It occurs on the surfaces on the interior of the body.The cells are packed tightly together.There are six types of epithelial tissue which are simple squamous ,simple cuboidal ,simple columnar ,stratified columnar ,stratified cuboidal ,pseudostratified columnar.Epithelial tissue is usually separated from the tissue by a thin sheet of connective tissue.The connective tissue is a group of tissues in the body that maintains the form of the body and its organs.It provides cohension and internal support.The connective has 7 types of tissue.They are loose connective tissue,fibrous tissue,bone tissue,cartilage,adipose tissue,and blood tissue.The nervous tissue is is specialised to react to stimuli.Its also conduct impulses to various organs in the body.There are only two types of nervous tissue,neuron and neuroglial.The neuron are easily stimulated and transmit impulses very rapidly.They are not sensitive to stimuli.They do not conduct nerve impulses.The main function of the muscular system is movement.The three types of muscular tissue is cardiac,skeletal,and smooth.Cardiac muscle tissue shows some of the characteristics of smooth and of skeletal.The skeletal is attached to and bring about the movement of the various bones of the skeleton.Smooth is made up of thin-elongated muscle cells, which are called fibres.

There are three kinds of neurons that interacts with the Central Nervous System, Sensory neurons that send signals to the CNS; Motor neurons that send signals away from the CNS to the muscles, organs, tissues etc., lastly , the Interneurons which is contained within the CNS. Action potentials are the electric impulses in a neuron that transfer information and transmit it through an axon.