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• Connective tissue is one of the four types of tissues found in our body
• Connective tissue helps provide structure, support, defense, transport materials, and binds things together
• Connective tissue consists of cell fibers, including collagen fibers and elastic fibers
• The cells in connective tissue are separated by a ground substance made up of water fluid and a mix of proteins called matrix
• Types of connective tissues:

  • Loose connective tissue: composed of collagen and elastic fibers, found in and around blood vessels and organs
  • Fibrous connective tissue: large amount of collagen, few cells, found in tendons and ligaments
  • Cartilage: found at the end of bones, in the nose, and ears
  • Adipose connective tissue: body fat used for insulation and energy storage
  • Blood: special type of connective tissue with cells separated by fluid
  • Bones: also considered a type of connective tissue
• Epithelial tissues line cavities and cover surfaces of vessels and organs
• Functions of epithelial tissues:

  • Protection from sunlight and pathogens
  • Secretion of sweat, hormones, and mucus
  • Absorption and exchange of substances like oxygen and CO2
  • Important in sensation and touch
• Types of epithelial tissues:

  • Squamous: wider than tall, found in lungs and blood vessels
  • Cuboidal: width and height are the same, found in glands
  • Columnar: taller than wide, found in the digestive tract and possibly the trachea
  • Classified by shape and number of layers (simple or stratified)
• Nerve tissues are found in the brain, spinal cord, and peripheral systems
• Made up of nerve cells called neurons that transmit electrical signals throughout the body
• Parts of a neuron:

  • Cell body with nucleus and organelles
  • Dendrites receive signals
  • Axon transmits signals with myelin sheath insulation
  • Axon terminal communicates with other cells
• Muscle tissues are responsible for movement inside and outside the body
• Functions of muscle tissues:

  • Movement, body posture, heat production
  • Ability to contract and relax
• Types of muscle tissues:

  • Smooth: found in digestive tract and blood vessels, involuntary
  • Cardiac: found in the heart, striated, helps pump blood
  • Skeletal: attached to bones by tendons, voluntary, helps with movement
• The four types of tissues discussed in the video are connective tissue, epithelial tissue, nervous tissue, and muscle tissue
• Connective tissue provides structure, support, defense, transport materials, and binds things together in the body
• Examples of connective tissues include:

  • Loose connective tissue
  • Fibrous connective tissue
  • Cartilage
  • Adipose connective tissue
  • Blood
  • Bones
• Epithelial tissues provide protection, secretion, absorption, exchange, and sensation
• Epithelial tissues are classified based on their shape and the number of layers, including squamous, cuboidal, and columnar, as well as simple and stratified types
• Nerve tissues are found in the brain, spinal cord, and peripheral nervous system
• The main types of muscle tissues are smooth, cardiac, and skeletal muscles
• Smooth muscles are involuntary and are found in organs like the digestive tract, while skeletal muscles are voluntary and are attached to bones for movement
• Cardiac muscles are found in the heart and help pump blood throughout the body
• There are over 600 different skeletal muscles in the human body
• Connective tissue provides structure, support, defense, and transport within the body
• Examples of connective tissues include:

  • Loose connective tissue
  • Fibrous connective tissue
  • Cartilage
  • Adipose tissue
  • Blood
  • Bones
• Epithelial tissues line cavities, cover surfaces, and serve functions such as protection, secretion, absorption, and sensation
• Nervous tissues transmit electrical signals through neurons, facilitating communication between the brain and the body
• Main types of muscle tissues:

  • Smooth
  • Skeletal
  • Cardiac
  • Functions:
  • Movement
  • Posture
  • Heat production
• Skeletal muscles are voluntary and enable movement by being attached to bones

  Smooth muscles are involuntary and assist in functions like digestion