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Embryogenesis Organogenesis

The process of embryogenesis begins when an egg or ovum is fertilized by a sperm cell to form a zygote.

24 Feb 2011

Somitogenesis is the process by which somites are formed during embryogenesis. Somitomeres are formed first, which are essentially segmented blocks of tissue that differentiate to form the skeletal muscle, vertebral column and skin of vertebrate animals.

24 Feb 2011

Formation of Gastrula

Once an egg is released from the ovary during ovulation, it meets with a sperm cell that was carried to it via the semen. These two gametes combine to form a zygote and this process is called fertilization. The zygote then begins to divide and becomes a blastula.

24 Feb 2011

Formation of Blastula

This zygote then undergoes mitotic division, a process that does not result in any significant growth but creates a multicellular cluster called a blastula.

24 Feb 2011

Embryogenesis Cleavage

The zygote will ultimately multiply through cleavage, which is a mitotic division process that forms a multicellular embryo.

24 Feb 2011

Calcium Health Risks

Calcium is an essential mineral in the body that is required for healthy bone development and other vital functions of the body. Some of the health risks associated with calcium deficiency and calcium toxicity are described below.

24 Feb 2011

Calcium and Diet

Calcium is an essential nutrient that needs to be included in the diet because our bodies cannot manufacture it.

24 Feb 2011

Uses of Calcium

Calcium is the most abundant mineral in the human body, making up about 2% of the total body weight. Some of the roles calcium plays in the body are described below.

24 Feb 2011

Calcium Compounds

Calcium forms several compounds in nature and many of these have a wide variety of uses. Some examples of calcium compounds include...

24 Feb 2011

What is Calcium?

In humans, calcium is the most abundant mineral and forms about 2% of our total body weight. Almost all of this calcium is found in the skeleton and the rest is found in the teeth, the blood plasma, the body’s soft tissues and the extracellular fluid.

24 Feb 2011

Down Syndrome Research

Down syndrome or Down’s syndrome is a genetic condition caused by the presence of an additional copy of chromosome 21 in a person’s cells. This additional DNA causes the physical characteristics and developmental problems associated with the syndrome.

23 Feb 2011

Down Syndrome in Society

Despite advances in the understanding and general management of Down syndrome, the condition is still associated with a certain amount of stigma. It is important that individuals with this condition receive support from their family, friends and society at large.

23 Feb 2011

Down Syndrome History

Down syndrome or Down’s syndrome is a congenital condition caused by the presence of an additional copy of chromosome 21 in a person’s cells. This is also referred to as trisomy 21.

23 Feb 2011

Down Syndrome Epidemiology

Down syndrome or Down's syndrome is a genetic disorder that affects hundreds of babies worldwide. The condition is caused by the presence of an additional copy of chromosome 21 in a person’s cells.

23 Feb 2011

Down Syndrome Management

Down syndrome is incurable and efforts to manage the condition are focused on early childhood intervention, education and proper support and care.

23 Feb 2011

Down Syndrome Screening

Down syndrome or Down's syndrome is an incurable genetic disorder that is mainly diagnosed after birth. However, mothers can also undergo antenatal screening to help predict how likely it is that their baby will be born with the condition.

23 Feb 2011

Down Syndrome and Other Diseases

Individuals with Down syndrome suffer from several health problems as a result of their condition. While these problems may only be mild in some individuals, others experience more severe health conditions and require special medical care and support.

23 Feb 2011

Down Syndrome Complications

Down syndrome is associated with several complications and health conditions that may require special medical care and support. Some of these conditions such as heart defect may be present from birth, while others such as epilepsy or intestinal problems may emerge over time.

23 Feb 2011

Down Syndrome Symptoms

Down syndrome or Down's syndrome, is a congenital condition that typically gives rise to characteristic facial and physical features. Individuals with this condition may also suffer from a range of associated health problems, although the severity of these problems varies between individuals.

23 Feb 2011

What is Down Syndrome?

Down syndrome or Down's syndrome, is a congenital condition that usually causes some degree of learning disability and is typically characterized by certain physical features.

23 Feb 2011