Describe the structure of the main tissues of the body and their role in the functioning of two named body organs

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BND Health and Social Care

Unit 5- Fundamentals of anatomy and physiology

P2 Describe the structure of the main tissues of the body and their role in the functioning of two named body organs

In this assignment I am going to be talking about the structure of the main tissues within the body and what their role is in terms of the functioning of two named body organs

The first tissue that I am going to be talking about is the nervous tissue. The nervous tissue is found in the nervous system, and includes the brain, spinal cord and nerves through out the organism. The tissues main function is to carry messages throughout the body, gathering and feeding back information via electronic impulses along specialised cells called neurones. Like an information highway it synchronizes the working of the nervous system by sending messages, to ensure that the all the body’s systems work together, maintaining the constant internal conditions needed and enabling the body to respond to external stimuli. (B.Stretch, 2007)

Neurons are highly specialised cells that make up the nervous tissue. They have a cell body and a long myelin sheath called the axon which carries electrical impulses. The axon ends in synapses which can link with other nerve cells or tissues such as muscles.  (http://www.nlm.nih.gov/MEDLINEPLUS/ency/imagepages/8682.htm)

Within the nervous system, where the tissues can be found, there are four main nerve groups that link back from the body to the brain through the spinal cord. There are two main systems the peripheral nervous system, which has sensory nerves though out the body which it connects to the central nervous system the spinal cord and brain. Sensory nerves send messages to the central nervous system which processes them and then sends out messages to the glands and the muscles, telling them what to do.

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(http://en.wikipedia.org)

The next tissue that I am going to be talking about is the muscle tissue. The muscle tissue is a specialised tissue that has the ability to conduct electrical impulses and to contract. There are three types of muscles and these are called:

  • Striated (also called voluntary or skeletal muscle),
  • Non-striated (also called involuntary, plain or smooth)
  • The cardiac muscle.

Striated muscles main function is to create movement of the skeleton by applying force to joints and bones by contradictions. It also maintains the body’s posture.

They generally contract voluntarily (by ...

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