BIOL 2P92 Lecture : Growth and its Measurement
19 Jan 2013
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Document Summary
Human growth is diffuse ( spread throughout: adult is taller, larger from front to back, has larger organs than a child. Development: physical, emotional, mental, social changes throughout live. Supine length (unable to stand infant"s length) Infant is placed, on it"s back, on a table. Ankles are gently pulled to straighten infant"s leg. Length is measured from top of its head to base of its heels. Person standing with their heels flat on the ground. Horizontal bar is moved to touch the top of the person"s head. Body mass amount of organic matter [dry mass plants] Wet body mass (weight) in humans is an indication of organic matter. Includes food + h2o method can be misleading. Absolute growth: total growth / cumulative height of a person. [graph] regular increase in size that levels out at 16 years. Therefore, male becomes taller than the female at 14: growth stops by the age of 18.
