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Study guide (Chapter 31.4 (Connective tissues “connect” tissues to one…
Study guide
Chapter 31.4
Connective tissues “connect” tissues to one another, both functionally and structurally. They bind, organize, support, strengthen, protect, and insulate other tissues.
Loose connective tissue holds internal organs in place. Ligaments and tendons consist of dense connective tissue.
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Blood consists of fluid plasma, cells, and platelets. It is considered a connective tissue because blood cells and platelets arise from stem cells in bone.
Chapter 31.1
All cells in an animal body are derived from stem cells which can either divide or differentiate into a specialized cell type
The first divisions of a fertilized egg yield totipotent cells that can form any tissue or develop into a new individual.
Later embryos have pluripotent cells that can still form any tissue. After birth, cells are less versatile.
Chapter 31.6
Nervous tissue makes up the communication lines of the body and is found in the brain, spinal cord, and nerves.
It consists of neurons that send and receive communication signals and glial cells that support the neurons.
A neuron have a central cell body and long cytoplasmic extensions that send and receive signals. Sensory neurons detect information, interneurons integrate and assess information about internal and external conditions, and motor neurons command muscles and glands.
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chapter 31.7
An organ system consists of two or more organs that interact chemically, physically, or both in tasks that help keep individual cells as well as the whole body functioning.
Organ systems interact to provide cells with the materials that they need and to rid the body of wastes.
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