Chapter 1 Notes

Chapter 1 Notes - CHAPTER 1 NOTES KNOW DIAGRAMS 1.3-1.8...

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CHAPTER 1 NOTES KNOW DIAGRAMS 1.3-1.8 Cells are Metabolically Active Use oxygen, nutrients Produce carbon dioxide, wastes Synthesize complex molecules Sensitive to environment Growth Reproduction Cells in the Body General Knowledge Only (200 types of cells) muscle nerve epithelial connective tissue Primary Cells/Tissues Muscle - contraction, generation of force Nerve - initiate, transmit electrical impulses Epithelial - barrier between body and external environment; exchange Connective - connect, anchor, support HEART HAS ALL FOUR TISSUE TYPES Nerve Cells (Neurons) Function in transmitting electrical signals Control and regulate muscle contraction, gland secretion, sensory perception, thoughts, memory, emotions, and much more Muscle Cells (Muscle Fibers) Found connecting bones, in the heart, in other internal organs Some under voluntary control, some involuntary Epithelial Cells – sit on a basement membrane Epithelial tissue (= epithelium) Single cell layers allow for direct exchange Forms barrier separates body from external environment lines hollow organs forms glands 1
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Epithelial tissue specialized for secretions Exocrine glands ducts leading to external environment
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Chapter 1 Notes - CHAPTER 1 NOTES KNOW DIAGRAMS 1.3-1.8...

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