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Health Sciences 17 Online
OpenStudy (anonymous):

I have an anatomy question.

OpenStudy (anonymous):

Can someone help me?

OpenStudy (anonymous):

Will give fan and medal

OpenStudy (anonymous):

Which list describes the path oxygen takes to the blood? (3 points) bronchi, alveolar sacs, alveoli, capillaries trachea, bronchi, capillaries, alveoli larynx, trachea, bronchi, capillaries pharynx, larynx, capillaries, alveoli 2. What function do the alveolar sacs serve in the respiratory system? (3 points) cool and clean the air before it moves to the capillaries warm and clean the air before it moves to the alveoli increase surface area for gas exchange with the capillaries decrease pathogens in the air before it moves to the alveoli 3. How does air pressure control expiration? (3 points) A decrease in air pressure within the lungs allows air to flow in. An increase in air pressure within the lungs allows air to flow out. A decrease in air pressure within the lungs causes them to contract. An increase in air pressure within the lungs causes them to expand. 4. What environmental conditions induce hemoglobin to bind to carbon dioxide? (3 points) an environment low in oxygen an environment high in oxygen an environment under high pressure an environment under low pressure 5. How does the tar from cigarette smoking disrupt oxygen distribution to the cells? (3 points) It restricts air flow through the bronchi. It reduces the surface area of alveolar sacs. It binds to hemoglobin in red blood cells. It does not directly affect oxygen distribution. 6. How could an endocrine system disorder affect the respiratory system? (3 points) It could restrict air flow through the bronchi. It could disrupt the rate of respiration. It could prevent hemoglobin from binding to oxygen. It could decrease the surface area of alveolar sacs.

OpenStudy (anonymous):

@Blues

OpenStudy (anonymous):

@Wild_Buck

OpenStudy (anonymous):

@ganeshie8

OpenStudy (somy):

give it a try first, which options do you choose & why so? and then we'll help you know if you are right or not, & if not, we'll lead you to correct answer :)

OpenStudy (anonymous):

Hello! Without telling you the answer to the first question - just following the passage of air from the atmosphere to your lungs. You breathe in through your nose (normally) so air passes through the nasal cavity then down a structure known as the pharynx which in simple terms is a chamber what sits behind the nose and mouth communicating with both the nasal and oral cavities. Air passes from the pharynx to the larynx (which contains the vocal cords) and into the trachea (the main windpipe). The trachea splits into two primary bronchi which then undergo further divisions giving off progressively smaller airways with respect to diameter. After the primary bronchi it is the secondary bronchi and tertiary bronchi which provide flow to the lobes and segments of the lungs respectively. At this level, we stop referring to the tubes that carry air as bronchi and start calling them bronchioles (reflecting a change in structure - bronchioles contain less cartilage than bronchi). The final two branches of the conducting airways are the conducting bronchioles and the terminal bronchioles. The terminal bronchioles are confusing named as this isn't the last bronchiole. Instead, think of terminal referring to the end of the bit of the respiratory tree that gas transfer cannot take place in. Everything after this point is capable of allowing oxygen to join blood and allowing carbon dioxide to leave blood. These airways are known collectively as the acinus. The respiratory bronchioles are the initial airways of the acinus and these go on to form alveolar ducts and sacs. For air to leave the alveoli and enter the capillaries, it has to then pass through several more layers which may be more information than you need!

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