Blood and tissues

• Blood


  A liquid connective tissue consisting of several cell types suspended in a liquid called plasma
• Plasma


  The matrix for the blood
• Cell types in the blood

  • Red blood cells
  • White blood cells
  • Platelets
• Red blood cells


  • Disk shaped that carries oxygen
• White blood cells


  • Help the body fight infection and other diseases
• Platelets


  • Cellular fragments that seal cuts and damaged blood vessels
• Muscle tissues


  The function of which is to produce motion
• Types of muscle tissues

  • Skeletal muscle
  • Cardiac muscle
  • Smooth muscle
• Skeletal muscle


  • Voluntary muscle
  • Attached to bones to facilitate movement
  • Cells are called fibers and are striated because of the actin and myosin bands
• Cardiac muscle


  • Found in the walls of the heart
  • Involuntary muscle
• Smooth muscle


  • Involuntary muscle without striations
  • Also called visceral muscle because it lines the walls of the organs and blood vessels
• Nervous tissues


  Control body functions and respond to environmental stimuli
• Functions of nervous tissues

  • Sensory input delivered by nerves to the brain and spinal cord
  • Integration of data by the brain and spinal cord
  • Motor output triggered by nerves carrying impulses from the brain and spinal cord
• Organs


  • Composed of one or more tissues
  • Integrate the function of different tissues, providing functions that the individual tissues lack