Lesson 1 science

• Respiratory System

  Responsible for taking in oxygen and expelling carbon dioxide
• Nose and mouth


  Entrance of the oxygen
• Nasal cavity


  Making the air warm, damp, and clean
• Pharynx


  Throat
• Larynx


  Voice box
• Tranchea


  Serves as passageway of air into the lunngs
• Brochi


  Branching tubes that connects the tranchea to the lungs
• Bronchioles


  Hairlike tube that connects to the aveoli
• Alveoli

  Gas exchange happens
• Inhale


  Oxygen enters our body
• Inhale


  Ribs move out and chest space increases
• Inhale


  Diaphragm muscle contracts
• Diaphragm 


  A muscle in the respiratory system that helps us breath
• Exhale


  Carbon dioxide exits our body
• Exhale


  Ribs move in and chest space decreases
• Exhale


  Diaphragm muscle relaxes
• Circulatory System 


  It is the life support structure that nourishes your cells
• Circulatory System


  It fuctions with other body systems to deliver different materials into the body
• Cardiovascular system 


  Other term of circulatory system
• Heart


  Pumps the blood throughout the body
• Heart


  Main organ of circulatory system
• Blood vessel


  Carries the blood throughout the body
• Vein


  Carries blood toward the heart
• Arteris


  Carries the blood away from the heart
• Capillaries 


  Smallest blood vessel
• Capillaries 


  Connecting the smallest vein to the smallest arteris
• Capillaries 


  The actual side wherein gasses and nutrients exchange
• Blood


  Carries the materials throughout the body
• Heart


  Has four chambers
• Receiving chambers


  The two arteria are the -
• Arteria


  Accept blood from the body and lungs
• Pumping chambers


  The two venticke are -
• Venticle


  Movjng the blood to the lungs and into the body
• Valve


  In between the arterium and venticle
• Prevent the blood to flow backwards


  What does the valve do?
• Valve


  On way doors that keep the blood from moving in only one direction