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Unit 10 Body Systems Physiology

Unit 10 Body Systems Physiology. CardioPulminary System Heart (Circulatory System) Veins and Arteries (Vascular System)) Lungs (Respiratory System ). Objectives and Questions. 1. Students will be able to describe the functions of the lungs.

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Unit 10 Body Systems Physiology

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  1. Unit 10 Body SystemsPhysiology CardioPulminary System Heart (Circulatory System) Veins and Arteries (Vascular System)) Lungs (Respiratory System)

  2. Objectives and Questions • 1. Students will be able to describe the functions of the lungs. • 2. Students can describe the flow of deoxygenated blood from the body through the heart to the lungs. • 3. Students can describe how gasses are exchanged within the various structures of the lungs. • 4. Students can describe the flow of oxygenated blood from the lungs to the heart and back to the body. • 5. Students can describe the basic constituents of blood.

  3. Lung Function: To allow gas exchange ….so body can Oxygenate blood to be delivered to the rest of the body and to take CO2 from the blood (deoxygenate)into the lungs to be expelled.

  4. Diaphragm (muscle)controls breathing diaphragm contracts & moves down during inhalation (air in) diaphragm relaxes & moves up during exhalation (air out) How Your Lungs Work

  5. You breath in air through the trachea, which branches into two bronchi…one to each lung. The bronchi branch into smaller tubes called bronchioles and end in clusters of alveoli where gas exchange occurs through the blood capillaries.

  6. Primary Function of the Lungs is to provide GAS EXCHANGE!!!! Deep within the lungs are little air sacs called Alveoli These are surrounded by blood capillaires where diffusion of gasses takes place. **CO2 in blood(coming from the body through the heart) is diffused into alveoli **O2 enters the blood stream from the aveoli (filled with O2 from breathing) (goes to heart) to be pumped to rest of body. Both these processes happen by DIFFUSION (high conc to Low conc) Breathing rate is controlled by CO2 levels in blood Oxygen enters blood by DIFFUSION Carbon dioxide leaves blood by Diffusion https://www.youtube.com/watch?v=hc1YtXc_84A https://www.youtube.com/watch?v=hc1YtXc_84A

  7. Pulmonary VEIN brings OXYGENATED blood back to heartPulmonary ARTERY brings DEOGYGENATED blood to the lungs

  8. Is blood ever blue? No… always shades of red Publishers use blue to represent blood with low oxygen (goes to the lungs) concentration and red to represent oxygenated blood ( goes to the body)

  9. THE HEART

  10. 4 Major functions of the Heart Pumps nutrients and wastes throughout the body Pumps blood that carries gases (Carbon Dioxide and Oxygen) Pumps blood that carries hormones (Endocrine) Distributes heat…(Homeostasis)

  11. If the circulatory system is like a network of freeways, The heart is like the major city.Roads are like the veins and arteries.

  12. The Roads! Veins carry blood to the heart (Highway going towards a major city) Arteries carry blood away from the heart (Highway going away from a major city) The further away from the heart the smaller the veins and arteries get ( Freeways become highways, become two lane roads) Capillaries: very small veins and arteries that connect with the tissues and organs where nutrients and gasses exchange. ( Surface streets and driveways)

  13. Pathway of blood from body thru Heart to lungs hi CO2 low O2 • 1. DEOXIGENATED blood is brought to the heart from the body via the inferior and superior VENA CAVA ARTERY • 2. Flows into the RIGHT ATRIUM • 3. Pumped to the RIGHT VENTRICLE • 4. Pumped up the PULMINARY ARTERY branches and goes into the lungs . Where gas exchange will occur…CO2 out of blood, O2 into blood.

  14. Pathway of blood from lungs to heart and body. Hi O2 • 1. OXYGENATED blood pumped back to heart from lungs via the PULMINARY VEINS into the LEFT ATRIUM. • 2. Pumped into the LEFT VENTRICLE. • 3. Pumped up the AORTA (AORTIC VEIN) to head and lower body to oxygenate the body. https://www.youtube.com/watch?v=Rj_qD0SEGGk

  15. The heart and vascular system transport blood around the body

  16. Diseases Diseases of the heart and blood vessels are the leading cause of death in the U.S. Arthrosclerosis- buildup of fatty deposits on inner walls of arteries; blood flow is restricted Heart Attack: an area of heart muscle does not get oxygen cause an artery leading to the heart is blocked

  17. Diseases Diseasesof the heart and blood vessels are the leading cause of death in the U.S. Arthrosclerosis- buildup of fatty deposits on inner walls of arteries; blood flow is restricted Heart Attack: an area of heart muscle does not get oxygen cause an artery leading to the heart to be blocked

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