tissues

• connective tissue helps to provide structure, support, defence, transports materials and bind things together
• what are the cell fibres that connective tissue is made up of?

  collagen and elastic fibres
• connective tissues are separated by what?

  ground substance that is made up of water, fluid and a mix of proteins called matrix
• loose connective tissues are composed of collagen and elastic fibres
• where can loose connective tissue be found?

  in and around blood vessels and organs
• fibrous connective tissue is made up of a large amountmof collagen and very few cells
• where can fibrous connective tissue be found?

  found in tendons and ligaments
• cartilage is found at the end of bones in our nose and ears
• adipose connective tissue is body fat and is used for what?

  insulation and to help store energy
• blood is a connective tissue, the cells are separated by fluid
• connective tissues help to attach bones, attach muscle to bone, move material around in the form of blood. It also gives us structure in the form of bones and helps to store some fat tissue
• epithelial tissues:

  • line cavities and cover surfaces of blood vessels and organs
  • provide protection from sunlight and pathogens
  • involved in the secretion of sweat, hormones and even mucus
  • Involved in absorption and exchange, like oxygen and CO2
  • they are important in sensation, our ability to feel
• epithelial tissues line the outside of our body, the inside of our vessels and help to keep us alive
• squamous epithelial tissues are found where?


  the lungs and blood vessels
• squamous epithelial tissues' width is greater than their height
• cuboidal epithelial tissues are cube shaped and found in important glands
• columnar epithelial tissues are found where?

  in the digestive tract and sometimes the trachea
• columnar epithelial tissues' height is greater than its width
• nerve tissue is found in :

  • the brain
  • the spinal cord
  • peripheral systems
• nerve tissues are often made up of nerve cells called neurons
• neurons transmit electrical signals across your body, allowing your brain to communicate with your body
• a neuron has a cell body that contains the nucleus and other organelles
• neurons have dendrites that receive electrical signals from other neurons
• the axon of a neuron is where nerve signals pass along
• the myelin sheath acts as insulation for the axon
• the axon terminal communicates with dendrites of other cells, this allows electrical signals to pass and flow throughout your body
• what are nerve tissues?

  a group of neurons working together to pass electrical signals from your brain to many parts of your body
• muscle tissue is responsible for the movement inside and outside of the body. they help with body posture and produce heat
• muscle tissue has the ability to contract and get shorter, and relax and go back to their original size
• what are the three types of muscle tissue?

  cardiac, skeletal and smooth
• cardiac and skeletal are striated muscles, what does this mean?

  they have regularly repeated stripes which are formed by proteins called myofilaments
• where can smooth muscles be found?

  in the digestive tract, inside veins and arteries
• smooth muscles are involuntary muscles, you do not have to think about them in order for them to work.
• what is the function of smooth muscles?

  they help with the movement of food waste and blood throughout the body
• skeletal muscles are also involuntary muscles, they work with bones in order to help us move around
• skeletal muscles are connected to bones by tough connective tissue, called tendons
• cardiac muscles can be found where?

  the heart
• cardiac muscles are a mixture between smooth and skeletal muscles
• what is the function of cardiac muscles?


  they help the heart to pump blood
• epithelial tissues are closely packed cells that form layers