Fill in the Blanks Life Span - RespiratoryOnline version Life span consideration - Respiratory by Leisa Sanderson 1 anteroposterior deflation Inspiratory transverse Adolescent crying Child rounder scoliosis six stretchability abdomen Expiration tactile Adult thorax Cilia ten kyphosis pulmonary Infant decreases Normal respiratory rate - 30 - 60 18 - 30 12 - 16 10 - 20 When assessing an infant it is important to remember that the thorax is in shape , this makes it harder for the infant to expand their . You can assess fremitus by placing your hand over the infants thorax when they are . It may be easier to assess respiratory rate by watching the infants . Around years of age the diameter decrease in proportion to the diameter . During rapid growth spurts spinal curvature and rotation known as may appear . Curvature greater than percent should be referred for medical evaluation . In older adults may be accentuated due to cartilage and osteoporitic changes . muscles may become less powerful , and inspiratory reserve volume . may require the use of accessory muscles and of the lung is often incomplete . Elastic tissue of the aveoli loses it's and changes to fibrous tissue . in the airways decrease and become less effective causing older adults to become more prone to infections .