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

P2: Describe the structure of the tissues of the body and their role in the functioning of two named body systems.

Extracts from this document...

Introduction

P2: Describe the structure of the tissues of the body and their role in the functioning of two named body systems. Epithelial tissue: Simple Epithelial tissue is one of the four major tissue types in the body, acting as an interface between the body and the rest of the world. Skin is composed of epithelial tissue which lines the body cavities and major organs. There are several different types of epithelial tissue, which form to fulfil specific needs and functions. This tissue, known collectively as the epithelium, can filter, absorb, and diffuse various substances, and it is also involved in sensory perception and bodily secretions. According to Marieb (2000) 'covering and lining epithelium covers all three body surfaces and contains versatile cells. One type forms the outer layer of skin while others dip into the body to line it cavities.' Cuboidal Cuboidal epithelium is cube-shaped with spherical nuclei in the centre that line ducts and tubes and allows materials to pass through. They are found in secretive or absorptive tissue like the exocrine gland, the lining of the kidney tubules and in the ducts of the glands. They also constitute the germinal epithelium, which produces the egg cells in the female ovary and the sperm cells in the male testes Columnar Columnar epithelium forms the lining of the stomach and intestines. Their nuclei are elongated and are usually located near the base of the cells with slightly oval nuclei. ...read more.

Middle

When parts of the body become inflamed, the connective tissue areolar soaks up the excess fluid and the part then swells up, this is a condition called edema. Various types of phagocytes are found in this tissue, they pick up and destroy bacteria , dead cells and other derbis. Adipose: Adipose is the name given for fatty and it is made up of a variation of areolar tissues of which adipose cells have doubled several times in order to obscure other cells and fibres. Once the adipose cell has matured adipose cells are filled so much fat that the cell is pushed to one side. Adipose is usually found under the skin and in organs like the heart and the kidneys. Adipose is also found in external temperature, it also helps protect the body against energy and it also stores energy. Muscle: Muscle is a specialized tissue that can contract. Muscle tissue contains the specialized proteins actin and myosin that slide past one another and allow movement. Examples of muscle tissue are contained in the muscles throughout your body. There are three types of muscles which are striated, non-striated and cardiac. Striated muscle: Striated muscle is attached to the bones of the skeleton or some and some facial muscles are attached to the skin. Striated muscle is found in skeletal muscle. Skeletal muscle is called striated muscle because striations are seen on it through a microscope. ...read more.

Conclusion

The lung is the organ where alveoli are mainly found. The pulmonary alveoli is where the exchange of gases in the blood takes place. The alveoli have an epithelial layer and plasma which is surrounded by matrix. The alveolar cells consist of three main types of alveolar cells these type of cells are known as type1, type 2 and type 3. Type one cells are what make the structure if the alveolar wall. Type 2 cells release surfactant in order to lower the surface tension of water and play a role in the increase of gas exchange. Type 3 cells eradicate unknown cells such as bacteria. The trachea which is also known as the wind pipe extends to bronchi from the larynx. Air travels through the trachea to get to the lungs. The lining of it consists of pseudostratified ciliated columnar epithelium cells that have mucosae goblet cells which are what produces mucus. The nasal cavity also known as the nasal fossa is a large space that is found above and behind the nose, the space is filled with air. The areas of the respiratory tract receive air that has been conditioned by the nasal cavity. Due to the big surface area provided by the conchae. The air that goes through the nasal cavity is either warm or cooled within one degree of the body's temperature. The air is then humidified. After this the dust and other particles are removed by the cilia, which are hairs that are found in the nostril. The cilia of the respiratory epithelium move the particulate matter towards the pharynx where it is swallowed. ...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

Here's what a teacher thought of this essay

4 star(s)

This is a good essay that goes into a great deal of depth from a biological point of view. It discusses various forms of tissues and their structures.

However, it does not fully discuss how the tissues are related to function of organs. In places there is detail that is not required and the writer needs to choose information and relate it to the topic.

****

Marked by teacher Sam Morran 07/06/2013

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)

    are two lungs to be supplied - hence the right and left pulmonary arteries. The pulmonary veins (there are four of them), now carrying oxygenated blood, must enter the left atrium. The main artery to the body leaving the left ventricle to the aorta and the main vein bringing blood

  2. P2 - Physiology of fluid balance

    http://www.chem.purdue.edu/gchelp/atoms/states.html The atoms within a solid are packed very tightly together which gives it its definite shape and volume. As they are packed so tightly, this does not allow vibrations between the atoms resulting in limited motion. A solid is not easily compressible as there is limited free space between particles.

  1. Use examples to explain how body systems interrelate with each other

    Our body systems work together in several ways for example if a person is exercising their somatic nervous system will tell the skeletal muscles to start working. The working muscles will demand energy and the energy will be produced by ATP in the cells.

  2. P1 & P2 Public Health

    'These statistics are used to determine how health can be improved or how areas of concern can be highlighted and effects of ill health reduced or prevented.' Baker L, 2008, BTEC National Health and Social Care Book 2, page 2 Patterns of illness and disease can be a result of

  1. Unit 10 Caring for Children and Young People P2, M1 & D1

    There are nine Quality Standard?s for children?s homes; * The quality and purpose of care standard * The children?s wishes and feelings standard * The education standard * The enjoyment and achievement standard * The health and wellbeing standard * The positive relationships standard * The protection of children standard

  2. P4- Explain the physiology of two named body systems in relation to energy metabolism ...

    http://nursingcrib.com/wp-content/uploads/pulmonarycirculation-261x300.jpg The cardiac cycle Lastly, the cardiac cycle encompasses the events taking place within the heart during one heartbeat. The events in which the cardiac cycle can be described are as follows: 1. Both atria contract, forcing blood under pressure in the ventricles.

  1. Unit 5 Anatomy and physiology in health and social care

    called cisternae (which are sent to the Golgi body, or inserted into the cell membrane). It is represented by sour gummy worms. Smooth endoplasmic reticulum - (smooth ER) a vast system of interconnected, membranous, infolded and convoluted tubes that are located in the cell's cytoplasm (the ER is continuous with the outer nuclear membrane).

  2. Unit 2 task 2 -National Initiatives and anti-discrimination legislation.

    main aims: -To bring the human rights contained in the European Convention on Human Rights under the jurisdiction of UK courts. This makes it possible for people to raise or claim their human rights within complaints and legal systems in the UK.

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