This website uses cookies to ensure you have the best experience. Learn more

Adrenal Gland Essay

3185 words - 13 pages

Agricultural pollution
From Wikipedia, the free encyclopedia
Jump to: navigation, search
Agricultural pollution refers to biotic and abiotic byproducts of farming practices that result in contamination or degradation of the environment and surrounding ecosystems, and/or cause injury to humans and their economic interests. The pollution may come from a variety of sources, ranging from point source pollution (from a single discharge point) to more diffuse, landscape-level causes, also known as non-point source pollution. Management practices play a crucial role in the amount and impact of these pollutants. Management techniques range from animal management and housing to the spread of ...view middle of the document...

Soil contamination can occur when pesticides persist and accumulate in soils, which can alter microbial processes, increase plant uptake of the chemical, and also cause toxicity to soil organisms. The extent to which the pesticides and herbicides persist depends on the compound’s unique chemistry, which affects sorption dynamics and resulting fate and transport in the soil environment.[1] Pesticides can also accumulate in animals that eat contaminated pests and soil organisms. In addition, pesticides can be more harmful to beneficial insects, such as pollinators, and to natural enemies of pests (i.e. insects that prey on or parasitize pests) than they are to the target pests themselves.[2]
'
Pesticide leaching
Pesticide leaching occurs when pesticides mix with water and move through the soil, ultimately contaminating groundwater. The amount of leaching is correlated with particular soil and pesticide characteristics and the degree of rainfall and irrigation. Leaching is most likely to happen if using a water-soluble pesticide, when the soil tends to be sandy in texture, if excessive watering occurs just after pesticide application, or if the adsorption ability of the pesticide to the soil is low. Leaching may not only originate from treated fields, but also from pesticide mixing areas, pesticide application machinery washing sites, or disposal areas.[3]
Fertilizers
Leaching, runoff, and eutrophication


Eutrophication of the Potomac River.
The nitrogen (N) and phosphorus (P) applied to agricultural land (via synthetic fertilizers, composts, manures, biosolids, etc.) can provide valuable plant nutrients. However, if not managed correctly, excess N and P can have negative environmental consequences. Excess N supplied by both synthetic fertilizers (as highly soluble nitrate) and organic sources such as manures (whose organic N is mineralized to nitrate by soil microorganisms) can lead to groundwater contamination of nitrate. Nitrate-contaminated drinking water can cause blue baby syndrome. Together with excess P from these same fertilizer sources, eutrophication can occur downstream due to excess nutrient supply, leading to anoxic areas called dead zones.
Organic contaminants
Manures and biosolids contain many nutrients consumed by animals and humans in the form of food. The practice of returning such waste products to agricultural land presents an opportunity to recycle soil nutrients. The challenge is that manures and biosolids contain not only nutrients such as carbon, nitrogen, and phosphorus, but they may also contain contaminants, including pharmaceuticals and personal care products (PPCPs). There a wide variety and vast quantity of PPCPs consumed by both humans and animals, and each has unique chemistry in terrestrial and aquatic environments. As such, not all have been assessed for their effects on soil, water, and air quality. The US EPA has surveyed sewage sludge from wastewater treatment plants across the US to assess...

Other Papers Like Adrenal Gland

Endocrine System Essay

989 words - 4 pages known as adenoma, a benign tumor. With this disease the pituitary gland begins to overproduce ACTH which then causes the body to respond by over producing cortisol. Too much cortisol in the system can interfere with the bodies way of handling inflammation. ADDISON’S DISEASE: Addison’s disease is a chronic endocrine system disease where the adrenal glands don’t produce enough cortisol or aldosterone. Cortisol is the body’s way of handling stress

Biopsychology Essay

1489 words - 6 pages tissues throughout the entire body. The major glands of the endocrine system are the pituitary gland, hypothalamus and pineal gland in the brain. There is also the thyroid gland in the neck, adrenal glands the pancreas in the abdomen, and the gonads which are either ovaries or testes depending on the gender, in the lower abdomen. Although the endocrine glands are the body's main hormone producers, some non-endocrine organs such as the brain, heart

The Endocrine System

778 words - 4 pages control and regulate functions including: Metabolism Growth Development Sexual Reproduction The primary glands that make up the human endocrine system are the hypothalamus, pituitary, thyroid, parathyroid, adrenal, pineal body, and reproductive glands-the ovary and testis. The pancreas, an organ often associated with the digestive system, is also considered part of the endocrine system. Figure 3. The components

Heritage and Hormones

623 words - 3 pages physical changes. To this we can attributed enlargement in the breast (for girls), change of mood and pubic and under arm hair. The endocrine system is formed by the pituitary gland, the thyroid gland, the hypothalamus, the pineal body, the adrenal glands, and the ovaries and testes. Each gland has a different hormone and each one is responsible for different functions of the body. The hormone that it can affect a person’s behavior is the thyroid

Homeostasis

2245 words - 9 pages to commands from the hypothalamus. Thyroid Gland: The thyroid gland has two lobes connected by an isthmus (small connecting stalk) and is in the lower part of the neck just below the larynx. The thyroid gland produces three hormones. Adrenal Gland: The adrenal medulla, the inner part of the adrenal gland, is not essential to life, but helps a person in coping with physical and emotional stress. The adrenal medulla secretes adrenaline and

Autonomic Ns

1158 words - 5 pages Autonomic Nervous System Organization of Nervous System CNS PNS Autonomic Nervous System Somatic | Autonomic | Fibers do not synapse once they have left the CNS | Fibers synapse once in ganglia after they have left the CNS | Innervates skeletal muscle | Innervates Smooth/Cardiac muscles & Gland cells | Always Excitation of the muscle | Either Excitation or Inhibition of effector cells | Function:Locomotion

Biography

750 words - 3 pages | Human Anatomy Lab to Establish Organ System Roles Question 3: The body experiences some stressor like exercise, fright, or emotional stress whether it is joy or sorrow. There are certain hormones like epinephrine and norepinephrine that are produced during these stressful events. These hormones are produced by the adrenal gland, and they will have an effect on the heart rate and breathing rate. Explain how the

Amazing Copy

1627 words - 7 pages severe. • The pain often moves into your right lower abdomen and becomes more focused in this area. Kidney removal Kidney removal, or nephrectomy, is surgery to remove all or part of a kidney. It may involve: • Part of one kidney removed (partial nephrectomy) • All of one kidney removed (simple nephrectomy) • Removal of one entire kidney, surrounding lymph nodes, and the adrenal gland (radical nephrectomy) Description

Invasive Species

638 words - 3 pages | Parathyroid Glands |Parathyroid hormone  | |2 |Thyroid Gland  |Thyroxine, calcitonin  | |3 |Pineal Gland  |Melatonin  | |4 |Hypothalamus  |Produces ADH and

Biology Lab Unit 4 Ip

691 words - 3 pages , | | | |thrombopoietin  | |15 |Adrenal gland  | Medulla: epinephrine, norepinephrine Cortex: glucocorticoids | | | |(cortisol), aldosterone, testoserone | |16 |Pancreas  |Insulin, glucagon

The Nervous System

1192 words - 5 pages from external stimuli. Interneurons relay signals between motor and sensory neurons. Epinephrine is a naturally occurring hormone. The hormone epinephrine is a fluid released from the adrenal gland. The hormone acts as a neurotransmitter. A neurotransmitter transfers and regulates the signals between the neurons and other cells of the body. The fight-or-flight response of the body is initiated by the secretion of epinephrine. The sympathetic

Related Essays

Heredity And Hormones Essay

607 words - 3 pages . Hormones carry messages and help regulate bodily activities. Hormones are activators for different behaviors. Hormones can affect mood, emotional reactions, and learning ability. Changes in hormones can contribute to mental disorders like depression. The pituitary gland, often called the master gland, is located on the underside of the brain and is connected to the hypothalamus. The pituitary gland produces the largest number of different hormones and

Endocrine Glands Essay

790 words - 4 pages masses of glandular tissue found on the posterior side of the thyroid gland. The parathyroid glands produce the hormone parathyroid hormone (PTH), which is involved in calcium ion homeostasis. PTH is released from the parathyroid glands when calcium ion levels in the blood drop below a set point. PTH stimulates the osteoclasts to break down the calcium containing bone matrix to release free calcium ions into the bloodstream. adrenal glands

Heredity And Hormones Essay

672 words - 3 pages important role in helping to coordinate and integrate complex psychological reactions. The nervous system and endocrine system work together in a constant manner. Chemicals from both systems work together to make the functions in the body work correctly (Morris & Maisto, 2005). Chemical substances called hormones are released from the endocrine gland and are carried through the bloodstream. Hormones are like neurotransmitters, carrying messages

Heredity, Hormones, And Human Behavior Essay

728 words - 3 pages System is a key player in incorporating complex psychological reactions. The endocrine glands release chemical substances called hormones that are carried throughout the body in the bloodstream (Morris, 2005). There are many different glands in the endocrine system. Thyroid Gland Pineal Gland Pituitary Gland Pancreas Adrenal Glands The thyroid gland is just below the larynx and produces one main hormone called thyroxin