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Science Review Grade 8

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  • The ________________ system transports absorbed nutrients to all parts of the body.
    circulatory
  • _____________ occurs when liquid food is pushed from the esophagus into the stomach.
    Peristalsis
  • The _______________ system works with the digestive system to remove wastes from the blood.
    excretory
  • The vascular tissue in plants that carries water and minerals upward from the roots.
    Xylem
  • The organ that temporarily stores food and mixes it with gastric juices to form chyme.
    Stomach
  • The fingerlike projections in the small intestine that absorb nutrients into the bloodstream.
    Villi
  • The state of balance within the body that involves regulating temperature, pH, and nutrients.
    Homeostasis
  • The part of the small intestine where most absorption of nutrients takes place.
    Ileum
  • The large blood vessels where absorbed nutrients enter before being delivered throughout the body.
    Capillaries
  • Capillaries are the _______________ that connect to villi in the small intestine for nutrient absorption.
    blood vessels
  • The liver produces ____________, which helps break down fats.
    bile
  • Food is chewed into smaller pieces in the mouth to increase _______________ for enzyme action.
    surface area
  • The main role of the ________ intestine is to absorb water and form solid waste.
    large
  • The vascular tissue in plants that transports the products of photosynthesis.
    Phloem
  • The wave-like muscular contractions of the esophagus that push food into the stomach.
    Peristalsis
  • If the __________ is blocked, roots will not receive food for growth.
    Phloem
  • The enzyme in saliva that breaks down starch into sugars.
    Amylase
  • The correct path of food is:
    Mouth → Esophagus → Stomach → Small intestine → Large intestine → Rectum → Anus.
  • The organ that stores and concentrates bile before it is released into the small intestine.
    Gallbladder
  • In plants, the __________ transports water and minerals, while the ______________ transports glucose.
    xylem; phloem