¶ … Organ Systems: The Pituitary Gland
The pituitary gland, according to Davies (2007), "is a pea-sized endocrine gland at the base of the brain," linked to the hypothalamus by the infundibulum. It is divided into several parts; i.e. The anterior lobe (front part) and the posterior lobe (back part). The anterior lobe secretes seven hormones that are essentially responsible for the regulation of a number of activities that take place in the human body - from reproduction to growth. Of the seven, five are tropic hormones (induce other glands to secrete hormones). The pituitary gland secretes only two hormones. The targets and effects of the nine are presented in the table below.
The Anterior Pituitary
Tropic Hormones
Hormone
Target
Function
Adrenocorticotropic hormone (ACTH)
Adrenal glands
Involved in the stimulation of the cortex of the adrenal glands to secrete cortisol and aldosterone. Cortisol regulates blood pressure and blood sugar levels, as well as metabolism. It is an anti-inflammatory agent, helping the body...
S. Congress that the prospects of stem cell research were so vast that it could touch all the realm of medicine (Connor 2000). An unlimited source of embryonic stem cells will solve the problem of shortage of transplants. Embryonic stem cells will save lives by curing generative diseases of the brain, hepatitis, diabetes, leukemia, rheumatoid arthritis, muscular dystrophy and cystic fibrosis and diseases of the heart and kidneys. But current
Nervous System: In order to achieve its function, the nervous system is divided into two major parts i.e. The Central Nervous System (CNS) and Peripheral Nervous System (PNS). The central nervous system is basically made up of the brain and spinal cord and has the main function of receiving information from the body and sending out instructions. While the brain is protected by the skull, the spinal cord is guarded
This is called acute adrenal failure or an Addisonian crisis. It can be fatal if it isn't cared for. The indications may include: Pain in the abdomen, lower back or legs Severe vomiting and diarrhea Dehydration Low blood pressure Loss of consciousness (Addison's disease, 2010). Secondary adrenal deficiency takes place when the pituitary gland fails to manufacture adequate adrenocorticotropin (ACTH), a hormone that rouses the adrenal glands to produce cortisol. If ACTH production is too
Human Growth Hormone in Biotechnology Human growth hormone (GH), also known as somatotrophin, is a protein consisting of 191 amino acids with a molecular weight of ~22,000. Growth hormone is secreted by the pituitary gland, which stimulates growth and cell reproduction. The structure is made up of four helices, which are necessary for functional interaction with the GH receptor. Despite remarkable structural similarities between GH from different species, only human and
Other Medical Issues While neurological issues delays are primarily responsible for the functional developmental delays in children other complications can also affect the development of a preterm child. These problems include: cardiovascular complications; respiratory problems such as respiratory distress syndrome or chronic lung disease; a number of severe metabolic and gastrointestinal problems that can result in delayed growth and other problems; immune system problems, such as susceptibility to infections or diseases
Hypertension Essential hypertension or primary hypertension is a highly complex disorder. There are various factors modulating BP or blood pressure in order for adequate tissue perfusion to occur. These include: Vascular reactivity Vascular caliber Humoral mediators Circulating blood volume Blood viscosity Blood vessel elasticity Cardiac output Neural stimulation History of high blood pressure in family Ethnic background Aside from these factors, the natural course of primary hypertension is progression from infrequent or occasional to established or frequent hypertension. There is a
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