Developmental Biology - Biology Online Tutorial (original) (raw)
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Developmental biology is primarily concerned with how a living thing grows and attains maturity.
Developmental biology is a biological science that is primarily concerned with how a living thing grows and attains maturity. The tutorials included here focuses on human growth and development. Thus, one can expect to learn about human zygote developing and maturing into adulthood after these tutorials. Also included here are informative guides on dietary sources of nutrients critical for the proper growth and development of humans.
Objectives
- To learn about human reproduction and the different life stages in which a person goes through, i.e. from zygote to adulthood
- To become familiar with the different pregnancy and birth control strategies
- To recognize the importance of a balanced diet comprised of vitamins, carbohydrates, proteins, fats, and minerals
Key Points
- In humans, reproduction is solely by sexual means (with gametes) as opposed to other organisms that reproduce asexually (without gametes).
- Humans produce gametes (sex cells) by meiosis. Females produce egg cells whereas males produce sperm cells. Both of these cells are haploid. This is important at fertilization so that the zygote that forms from the union will retain its diploid nature throughout generations.
- The major human life stages in chronological order are as follows: zygote, embryo, fetus, neonate, toddler, puberty, adult
- The human body grows as manifested by multifarious bodily changes. The growth and development of the human body are sustained by the nutrients procured from dietary sources or by the innate production of vital compounds.
- At old age, the human body becomes less efficient. Homeostasis becomes less efficient in maintaining favorable conditions. This leads to the degeneration of the body and ultimately, death.
Human Reproduction and Fertilization
For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to continue the existence of the species and pass on genetic information from generation to generation. Read this tutorial to learn more about human reproduction and fertilization…
Birth of a Human Baby
Following nine months inside the mother’s womb is the birth of the baby. Know the different stages of the birthing process in humans…
Physical Development in Humans
This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutorial to know the specific physical changes that female and male bodies undergo as they turn into adults…
Human Biology – Food and Digestion
This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good diet will be one consisting of the right amounts of nutritive compounds. Get to know the different nutritional requirements of the body through this tutorial…
A Balanced Vitamin Diet – Vitamins A – K
A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such as vitamins, in the body could disrupt the normal physiological activities. To know more about this topic, read this tutorial…
A Balanced Diet – Carbohydrates and Fat
Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an overview of the different carbohydrates and fats the body needs, read this tutorial…
A Balanced Diet – Minerals and Proteins
Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and development. Know the importance of proteins and different minerals in this tutorial.
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