Respiratory System Questions and Answers Graded A

Respiratory System Questions and Answers Graded A alveoli - ANS- air sacs inside the lungs that facilitate gas exchange average human breath - ANS- holds for 30-60 sec average sneeze traveling rate - ANS- 39 mph bronchial circulation - ANS- provides lung tissues w/ oxygen and nutrients cardiac notch - ANS- conduction zone - ANS- air pathways epiglottis - ANS- small flap of cartilage that closes over larynx when you swallow to prevent choking expiration - ANS- exhalation; diaphragm moves upwards and internal intercostals decrease size of thoracic cavity; increases throacic cavity air moves out of lungs expiratory reserve volume - ANS- amount exhaled forcibly after a normal inhale external respiration - ANS- gas exchange between alveoli and blood inspiration - ANS- inhalation; diaphragm moves downwards and external intercostals cause chest cavity to expand internal respiration - ANS- gas exchange between blood and tissues larynx - ANS- voicebox, made of 8 pieces of cartilage and contains vocal cords; air passes through them to vibrate and create sound; the faster it vibrates, the higher the pitch. children have thinner, smaller vocal cords, cuasing them to have higher voices, as we mature, vocal cords get longer and thicker, deepening our voices lingula - ANS- lung's tongue lower respiratory tract - ANS- trachea, bronchi, bronchioles, alveoli lungs - ANS- only organs of the respiratory system nasal cavity - ANS- divided into left/right by a nasal septum, lined w/ ciliated mucus membrane that helps to moisten the air and the cilia pushes the debris to the throat to be swallowed; contains lots of capillaries to warm the air oblique fissure - ANS- separates the 2 lobes pharynx - ANS- throat; contains the epiglottis pleural cavity - ANS- the space between serous and pleural membranes; contains