2.6.6 - 2.6.8- Tissue

Cards (18)

  • Main types of tissue:
    • Connective
    • Muscle
    • Epithelial
    • Nervous
  • Specilised cell : tissue : organ : organ system : organism
  • Connective tissue:
    • provides support and structure
    • found in the skin, bones, and blood vessels
  • Types of cartilage:
    • Hyaline: forms embryonic skeleton and covers end of adult bonds, found in the nose and trachea
    • Fibrous: found in discs between vertebrae and in the knee joint
    • Elastic: found in the outer ear and form the epiglottis (in the back of throat)
  • In the cartilage there’s chondroblasts which form an extra cellular matrix and then enter G0, chondrocytes then maintain the matrix.
  • 3 types of muscle tissue:
    • cardiac
    • skeletal
    • smooth
  • Cardiac muscle
    • makes up walls of the heart
    • looks striated
    • cross links allow contraction
    • muscle movement is involuntary
  • Skeletal:
    • connected to bones by tendons
    • looks striated
    • contracts in 1 direction only
    • voluntary movement
  • Smooth:
    • found in intestine, uterus, bladder
    • Not striated
    • tapers away to form a point
    • propels substances along
    • involuntary
  • Epithelial tissue is a type of tissue that covers the outside of the body and lines the inside of the body:
    • squamous
    • close together
    • No blood vessels
    • has projections- villi and cillia
  • 3 main types of plant tissue:
    • epidermal
    • vascular
    • meristematic
  • epidermal tissue is the outer layer of the leaf
  • epidermal tissue is the outer layer of the leave:
    • squamous
    • has a waxy cuticle- decrease water lost
  • vascular tissue make up the xylem an phloem which togther are called the vascular bundle.
  • meristemtic tissue
    • contains stem cells
    • found in roots and shoots
    • Doesnt contain chloroplasts
    • has little celluse to allow space to grow
  • Plant organs
    • flowers- sexual reprodution
    • leaves- photosynthesis
    • stem- supports- transport- storage
    • roots- absorbs water, minerals and acts as an anchor
  • organ is a collection of tissues that work togther to perform a job or function- 11 organ systems in the human body
  • Key organ system examples:
    • nervous
    • respiratory
    • digestive
    • circulatory
    • excretory