• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Nervous System in Relation to Sensitivity of The Body

Extracts from this document...

Introduction

Sensitivity of the Body All living things perform seven life processes; Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion and Nutrition. Each system of the body has a specific role in each of these actions. In this article we shall discuss sensitivity. The system directly involved in sensitivity is the Nervous system. The nervous system is not one specific system. It includes both the central nervous system and the peripheral nervous system. The central nervous system is located within the brain and spinal cord. The peripheral nervous system is stretched throughout the remainder of the body, connecting the central nervous system to the all of our limbs and organs. Sensitivity in the body covers a wide range of senses; sight, taste, touch, hearing and smell. There are five sense organs in the human body which can be associated with senses known as sensory organs. These five sensory organs each have receptors for the specific stimuli which link to the parts of the nervous system (sensory systems) and by extension, the brain. In addition to these five senses there are a number of other senses that require the use of multiple sensory organs such as pressure or awareness of balance. ...read more.

Middle

Touch Sense of touch originates in the bottom layer of skin known as the dermis. This is filled with a number of tiny nerve endings which receive information about what your body comes into contact with. This information is sent to the spinal cord through the peripheral nervous system, which in turn sends messages to the brain where the feeling is registered. The human body has twenty five variations of nerve endings that all send messages to the brain. (09) Senses; Touch 15/4/11. The most common of these nerve endings detect pain, temperature and pressure. (09) Senses; Touch 15/4/11, (11) Your sense of touch 25/4/11. These sensory receptors cover the entire body, including the skin, epithelia, skeletal bones, muscles, joints, internal organs and the cardiovascular system. Some areas of the body are more sensitive than others. This is determined by the number of nerve endings located there. For example: if you were to bite your tongue, there would be a considerable amount of pain due to the large number of nerve endings that are sensitive to pain found on either side of your tongue. ...read more.

Conclusion

Meaning we have mostly no control over these actions. (16) Autonomic Nervous System 6/5/11. This explains why we are unable to stop our digestive system being active when we are hungry. You could contrast this to how you are able to hold your breath. We cannot stop our body taking actions to gain nutritive materials. The only way to stop our stomach rumbling is to give in and eat. (15) What makes us Hungry pt. 2 6/5/11, (14) Hunger and Eating 6/5/11. When we see, smell or think about food, this stimulates the nerves involved in digestion we will begin producing saliva; one of the first steps to breaking down food into nutrients. Conclusion Sensitivity is a very difficult subject to cover in its entirety. It includes all of our senses and feelings; even some that we may not be directly aware of. The nervous system is found throughout the body. When you begin to look into how we are able to achieve a particular sense, it will prove more complicated with each step you take. You can conclude that the nervous system plays the biggest role in sensitivity. Without our nervous system and by extension our senses; basic human function and survival would not be possible. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Healthcare section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Healthcare essays

  1. Marked by a teacher

    The Role of Energy in the Body and the Physiology of Three Named Body ...

    5 star(s)

    Below is a diagram of gaseous exchange in the alveolus. Ventilation, or Breathing, and the Respiratory Muscles. Ventilation is the movement of air in and out of the thorax to replenish the oxygen supply and remove surplus waste products (carbon dioxide and water).

  2. P2 - Physiology of fluid balance

    factors as if the carrier protein does not accommodate a particular protein diffusion across the membrane will not occur. The concentration gradient is also a big influence on facilitated diffusion as it does not require ATP and therefore goes against the concentration gradient in order to flow through the membrane.

  1. Describe the role of energy in the body and the physiology of three named ...

    Ventricles are bulging with blood and the increased pressure forces the atrio-ventricular valves shut (giving rise to the first heart sound-lubb) 3. Muscle in the ventricular walls begins to contract, pressure on blood inside rises and forces open the semi-lunar valves in the aorta and pulmonary artery.

  2. I will discuss the structure and functions of the nervous system including the structure ...

    The spinal cord has two functions, one is to connect the larger part of the peripheral nervous system to the brain. Nerve impulses are sent through the spinal cord through sensory neurons and are sent up into the brain. The second thing that the spinal cord is used fir is that it acts as a coordinator and this causes reflexes.

  1. Unit 6

    however when I first started school I was in Kenya and I was distance from everyone else simply because. I couldn*t speak clear English; most of the time when I spoke people did not understand what it I am trying to say, so therefore I was given special support to work on my English.

  2. Unit 7 Sociology

    health is an approach that some people take to health and illness; they basically identify 'health' as the absence of disease within the individual. This particular model is the most popular and has been since the industrial revolution in the mid-19th century, mainly because they underpin the ideas, beliefs and values of the NHS.

  1. In the human body the respiratory system, cardiovascular system, the digestive system, the musculoskeletal ...

    Aerobic ? this system needs oxygen. This gives more energy when you exercise for a few minutes. When the oxygen reaches your blood muscles your aerobic energy system switches on. What is the role of the respiratory system? The role of the respiratory system is to supply the blood with oxygen which is then carried throughout the whole body.

  2. Human Anatomy and Physiology

    Energy is released and stored in the mitochondria and mitochondria also stored glucose until we need them. There is a process inside the substance which is called, adenosine triphosphate (ATP)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work