science II period exam

• Veins are blood vessels that carry deoxygenated blood back to the heart.
• The heart has four chambers: two atrium and two ventricles.
• The left ventricle pumps oxygen-rich blood into the aorta, which carries it throughout the body.
• Arteries are blood vessels that carry oxygenated blood away from the heart to the body.
• Blood flows from the right atrium into the right ventricle, then out through pulmonary arteries to lungs where it picks up oxygen and releases carbon dioxide.
• Blood is pumped by the left ventricle through aorta to all parts of body except lungs.
• what is the function of the respiratory system?

  The respiratory system's main job is to move fresh air into your body while removing waste gases
• what things the circulatory system does?

  The circulatory system pumps blood from the heart to the lungs to get oxygen. The heart then sends oxygenated blood through arteries to the rest of the body. The veins carry oxygen-poor blood back to the heart to start the circulation process over.
• which are the parts of the heart?

   aorta, right atrium, left atrium , right ventricle , left ventricle , mitral valve , tricuspid valve
• red blood cells  carry oxygen from the lungs and deliver it throughout our body.
• white blood cells are the soldiers (cells) that protect our body from the pathogens
• Capillaries transport blood, nutrients and oxygen to cells in your organs and body systems
• platelets are small cells that forms clots for preventing our body to bleed
• circulatory system and respiratory system are besties
• plasma is  the clear liquid part of blood which contains the blood cells and transports carbon dioxide.​
• nasal cavity

  the nasal cavity filters warms and moisturizes air 4 breathing
• pleural cavity


  is the potential space between the 2 pleurae
• intercostal muscles

  are located between the ribs and they help w/ the inhalation process
• ribs


  are thin curved bones that form the ribcage and the help protect the most important organs (lungs, heart etc..)
• diaphgram


  is a muscle located at the base of the chest cavity and it helps the lungs expand
• trachea


  is a tube made of cartilages where the air enters to the lungs
• lungs

  are like 2 pinkish red balloons that allows us to breathe
• broncus


  carries air from the trachea to the luns
• bronchiole


  are small air passes within the lungs that branch out to the bronchi they help distribute air to the alveoli
• alveoli


  are small air sacks in the lungs where the gas exchange takes place
• gas exchange


  is carried out by organisms where different gases moves in different places: Oxygen diffuses into the blood stream
• labels 

  A) bronchus

  B) nasal cavity

  C) pleural cavity

  D) intercoastal muscles

  E) ribs

  F) diaphgram

  G) trachea

  H) lung

  I) bronchiole

  J) alveoli

  
• inhalation is when we breath in through our nose or mouth
• the respiratory system is made up of organs that allow us to take oxygen into our body and release carbon dioxide
• exhalation is when we breathe out through our nose or mouth
• heart

  A) right side

  B) left side

  C) pulmonary artery

  D) aorta

  E) vena cava

  F) pulmonary vein

  G) right atrium

  H) left atrium

  I) tricuspid

  J) mitral

  K) right ventricle

  L) left ventricle

  
• 1: blood enters the right atrium for superior and inferior vena cava
• 2: blood in the right atrium flows trough right AV valve into right ventricle
• 3: contraction of right ventricle forces pulmonary valve open
• 5: blood is distributed by right and left pulmonary arteries to the lungs
• 6: blood returns from lungs via pulmonary veins to left atrium
• 7: blood in left atrium flows trough left AV valve into left ventricle
• 8: contraction to left ventricle (simultaneous to step 3) forces aortic valve open
• 9: blood flows trough aortic valve into ascending the aorta
• 10: Blood in aorta is distributed to every organ in the body