Respiratory System 0.0 / 5 ? Physical EducationAnatomy & physiologyASAQA Created by: izzybook25Created on: 13-04-18 09:23 Name parts of the respiratory system Pharynx, larynx, trachea, bronchii, lung, intercostal muscles, ribs, alveoli, bronchiole, diaphragm 1 of 28 How is oxygen transported? 93% within oxyhaemoglobin, 7% within plasma 2 of 28 How is carbon dioxide transported? 70% in carbonic acid, 23% within haemoglobin, 7% in plasma 3 of 28 What is the breathing rate? The number of inspirations and expirations per minute 4 of 28 What is the average resting breathing rate? 12 - 15 5 of 28 What is tidal volume? The volume of air inspired or expired in one breath 6 of 28 What is the average resting tidal volume? 500ml 7 of 28 What amount of volume reaches which areas? 350ml reaches alveoli, 150ml remains in lungs 8 of 28 What is minute ventilation? The volume of air inspired or expired per minute 9 of 28 What is the equation for respiratory system? f x TV = VE 10 of 28 What is average resting minute ventilation? 7500ml 11 of 28 What is breathing rate response to exercise? Increases in proportion to exercise, reaches 50-60 breaths per min 12 of 28 What is tidal volume response to exercise? Increases in proportion, plateau during sub max cos lungs can't refill quick enough, max 3 litres 13 of 28 What is minute ventilation response to exercise? Anticipatory rise, rapid increases, steady state when supply + demand, gradual decrease. Doesn't plateau - has to keep up with gas exchange 14 of 28 What are the mechanics of inspiration at rest? External intercostals contract + pull ribcage out, diaphragm flattens to increase lung volume and decrease pressure 15 of 28 What are the mechanics of inspiration during exercise? Larger force on contraction created by sternocleidomastoid and pectoralis minor 16 of 28 What are the mechanics of expiration at rest? External intercostals relax and lower ribcage, diaphragm relaxes to decrease lung pressure + volume - passive process 17 of 28 What are the mechanics of expiration during exercise? Larger contraction created by internal intercostals and rectus abdominus 18 of 28 How is respiratory system controlled? RCC in medulla oblongata - IC controls inspiration, EC controls expiration 19 of 28 How is respiration controlled at rest? Nerve impulses control contraction - intercostal nerve and phrenic nerve to diaphragm. Expriation is passive 20 of 28 How is respiration controlled during exercise? Chemoreceptors detect CO2 increase/O2 decrease, thermoreceptors detect blood temp, propriorecpetors detect movement, barorecpetors informs state of lung inflation 21 of 28 Where does gaseous exchange take place? Alveoli 22 of 28 What is capillarisation? Exercise causes body to adapt and use more capillaries 23 of 28 What causes gaseous exchange? Partial pressures 24 of 28 What is the dissociation curve at rest? 30% oxygen dissociated, 70% associated 25 of 28 What is the dissociation curve during exercise? 70% dissociated, 30% associated 26 of 28 What shift happens during exercise? Bohr shift - left 27 of 28 Name 2 lifestyle diseases from lack of exercise Asthma, COPD 28 of 28
An unhealthy lifestyle has a detrimental effect on the cardiovascular and respiratory systems 0.0 / 5
Comments
No comments have yet been made