How are cells_specialized_chapter_8_lesson_2

How are cells_specialized_chapter_8_lesson_2

• 1.
  How Are CellsSpecialized? Chapter 8, Lesson 2
• 2.
  Main idea: Complexorganisms have many types of cells. Each cell has special structures that allow it to carry out specific tasks.
• 4.
  Both plants andanimals have tissues that perform specific jobs. Tissues are groups of cells with a common structure and function.
• 5.
  Types of Tissues Epithelialtissues: sheets of cells that cover surfaces and line certain body cavities and blood vessels. Connective tissues: joins other tissues together, stores fat, and makes blood cells. Bone and cartilage are examples
• 6.
  Types of Tissues Muscletissues: create movement in one direction only by getting longer or shorter. Nervous tissue: Some sends signals to muscles and others protects nerves and provide them with nutrients
• 7.
  Organs: made upof several tissue types working together to perform one or more functions Plants have leaves, roots, and flowers as their organs Humans have brains, hearts, stomachs, and livers.
• 8.
  Organ Systems Organ systemsare groups of organs that work together to perform complex tasks. Plants have vascular systems. All of the plants leaves together are an organ system.
• 9.
  Organisms that arelarger and more complex need more complex organ systems to maintain life. Some organs are part of more than one system. The hypothalamus is part of the nervous system and the endocrine system.
• 10.
  Organ System Function Circulatory System Provides body with oxygen Urinary System Removes liquid wastes Musculoskeletal System Supports body and enables movement Digestive System Obtains nutrients from foods Endocrine System Chemical messenger system Nervous System Controls movements and other organ systems
• 11.
  Endocrine system isa chemical messenger system that makes and sends out hormones Hormones have many functions, such as regulating growth and blood sugar. Plants use hormones to control growth and other functions.