tissues

• What are the four main tissue types?

  • Epithelial
  • Connective
  • Muscle
  • Nervous
• What is the function of epithelial tissue?

  Covers surfaces, protects and secretes
• What is the function of connective tissue?

  Supports and connects tissues
• What is the function of muscle tissue?

  Moves the body
• What is the function of nervous tissue?

  Transmits signals
• How do epithelial tissues protect the body?

  By covering surfaces and forming protective layers
• What are the two characteristics of epithelial tissue structure?

  Cell layers and cell shape
• What is an example of stratified squamous epithelium?

  Found in skin providing protection
• What are the main types of connective tissues and their characteristics?

  • Dense irregular: interwoven collagen fibers (skin dermis)
  • Dense regular: parallel fibers (tendons)
  • Loose: random fibers
  • Elastic: stretchy fibers
  • Adipose: fat cells
  • Reticular: mesh-like fibers
• What type of connective tissue has parallel collagen fibers?

  Dense regular connective tissue
• What is an example of simple squamous epithelium?

  Found in blood vessels for easy diffusion
• What is the primary function of adipose tissue?

  Stores fat for energy and insulation
• What distinguishes skeletal muscle tissue from cardiac and smooth muscle tissues?

  Skeletal muscle is multinucleated and voluntary
• What type of muscle tissue is involuntary and found in the heart?

  Cardiac muscle tissue
• What type of muscle tissue is found in internal organs?

  Smooth muscle tissue
• What is a key feature of skeletal muscle cells?

  They are multinucleated and have striations
• What is a key feature of cardiac muscle cells?

  They have a single nucleus and are branched
• What is a key feature of smooth muscle cells?

  They are uninucleated and spindle-shaped
• How do the structures of skeletal, cardiac, and smooth muscle tissues differ?

  Skeletal is multinucleated, cardiac is branched, smooth is spindle-shaped
• What is the role of T tubules in muscle tissue?

  They facilitate the transmission of signals for contraction
• Where are T tubules located in skeletal muscle tissue?

  At the A-I junction
• Where are T tubules located in cardiac muscle tissue?

  At the Z disc
• How do the functions of skeletal, cardiac, and smooth muscle tissues differ?

  Skeletal is voluntary, cardiac is involuntary, smooth is involuntary
• What type of muscles form the heart?

  Cardiac muscles
• What type of muscles are involuntary and control internal organs?

  Smooth muscles
• What are the three main parts of a neuron?

  Dendrites, cell body, and axon
• What is the primary function of nervous tissue?

  Allows communication through electrical and chemical signals
• What are the key features of skeletal muscle tissues?

  • Multinucleated cells
  • Presence of striations
  • Peripheral nuclei located at the edge of the cells
• What are the two main types of cells in nervous tissue?

  Neurons and glial cells
• What is the role of dendrites in a neuron?


  Receive signals from other neurons
• What does the cell body of a neuron do?

  Processes information
• What occurs at synapses?

  Neurotransmitters pass messages between neurons
• How do signals travel along the axon?

  Via action potentials
• What are the two main divisions of the nervous system?

  Central and peripheral nervous systems
• What does the central nervous system consist of?

  Brain and spinal cord
• What does the peripheral nervous system consist of?

  Nerves connecting to organs
• What is the correct path that a signal follows through a neuron?

  Dendrites → Cell body → Axon
• Which part of a neuron releases neurotransmitters into the synaptic cleft?

  Axon terminal
• What is the primary role of the axon terminal?

  Releases neurotransmitters
• What are T-tubules in muscle tissue?

  They facilitate the transmission of signals for contraction