Growth and Body Composition - Growth and Body Composition...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Growth and Body Composition Growth is defined as an increase in body mass, and increase metabolically active protoplasm. Simply, getting bigger. Common measurements of growth include height, weight, length, and body composition. Hyperplasia is an increase in cell numbers; hyperplasia occurs early in life, during prenatal stages. Hypertrophy is an increase in cell size, this occurs after birth. Hyperplasia is a prenatal occurrence while hypertrophy occurs during young childhood and at puberty. Prenatal and post-natal stages are the major stages of growth. The prenatal stage is defined in three distinct phases. The blastocyst occurs immediately after fertilization, nutrition is found in uterine solutions and in the egg itself. The embryonic stage sees the differentiation of cells into specific tissues and organs as well as a slight increase in weight. The fetal stage sees a major growth in weight and composition; the fetus receives nutrients from the maternal bloodstream. A prenatal growth curve appears a simple exponential parabola when graphing the days against the body weight. Post-natal growth is that which occurs after parturition. The post-natal growth curve takes a sigmoid shape. Prior to the inflection point, growth is self-accelerating and exponential. After the inflection point, the growth slows due to restricting factors. The inflection point of the post- natal sigmoid growth curve is puberty.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern