The Endocrine System

ENDOCRINE

Hormones are built to fit a certain target cell.

As the hormone travels to its target cell, proteins will latch on to it and act as carriers that control the amount of the hormone that can affect the cell.

The target cell has a receptor protein that is shaped to fit a specific hormone.

A hormone can only bind to the specific cell that has the correctly shaped receptor protein.

The male gonads(testicles), secrete hormones called androgens, the most important of which is testosterone. These hormones regulate sexual related body changes including the growth spurt that occurs during puberty, deepening of the voice, growth of facial and pubic hair, and the increase in muscle growth and strength. Testosterone works with hormones from the pituitary gland to regulate the production of sperm.

When the hormone binds to its target cell, it transmits its chemical instructions to the inside of the cell.

It works much like how a key fits in a lock.

Glands releases hormones which travels through the bloodstream to their target cell.

Hormones are built to fit a certain target cell.

The pineal body is located in the middle of the brain. It secretes melatonin, a hormone that may help regulate the wake-sleep cycle.

Gland

A gland is a group of cells that produce (or secrete) chemicals and hormones. It does this by removing minerals from the blood and processing them, then releasing the finished chemical for use somewhere else in the body.

Often called the master gland, the pituitary gland produces a large variety of hormones that help regulate all the different glands. It is located right underneath the hypothalamus, in the base of the brain.

The Hypothalamus is the primary link between the nervous system and the endocrine system. It is located in the lower central part of the brain. It's job is to activate and control the part of the nervous system that controls involuntary body functions, the hormonal system, and many body functions, such as regulating sleep and stimulating appetite, and also to relay important information to the pituitary gland.

The thyroid gland is located in the front part of the lower neck and looks like a bow tie.

It produces hormones to regulate how fast cells make energy. In doing this, it controls the body's metabolism and heat production. It can also stimulate bone growth, brain growth, and development of the nervous system in children.

The Endocrine System

The parathyroids are four tiny glands that are attached to the thyroid. They regulate the level of calcium in the bloodstream.

Hormones are the body’s chemical messengers which transfer information and instructions from one cell to another.

Each different type of hormone is made for transporting one specific instruction.

Hormone levels are influenced by stress, infection, and changes in the balance of fluid and minerals in blood.

Hormones

The thymus gland plays a role in the body's immune system.

There are two triangular adrenal glands, one above each kidney. The adrenal glands have two parts, each of which produces a set of hormones and has a different function.

One region secretes hormones that influence the metabolism, blood and body chemicals such as salt and water, the immune system, and the maturing of sexual functions.

The other region releases one of the best known hormones: adrenaline. Adrenaline helps you react and defend against stress.

The hormones secreted by the pancreas work together to maintain a steady level of glucose (sugar) in the blood, and to keep the body supplied with energy.

The nervous and endocrine system work together to keep the body functioning properly.

As a general rule, the endocrine system controls anything that happens slowly, while the nervous system controls faster processes.

Endocrine System

Nervous System

Kaitlyn Eldred & Jelisa Dandridge

May 16th, 2013

4th Period

The female gonads(ovaries), produce eggs and secrete the female hormones estrogen and progesterone. Estrogen is involved in the development of female sexual features. Both estrogen and progesterone are also involved in pregnancy and the regulation of the menstrual cycle.

WEBSITES:

"Endocrine System." Endocrine System. Ed. Steven Dowshen, MD. KidsHealth, Mar. 2012. Web. 07 May 2013. <http://kidshealth.org/parent/general/body_basics/endocrine.html>.

Bowen, R. "Pineal Gland and Melatonin." Pineal Gland and Melatonin. N.p., 17 Mar. 2003. Web. 07 May 2013. <http://www.vivo.colostate.edu/hbooks/pathphys/endocrine/otherendo/pineal.html>.

"Endocrine System." Endocrine System. American Medical Association, 1995-2013. Web. 07 May 2013. <http://www.ama-assn.org/ama/pub/physician-resources/patient-education-materials/atlas-of-human-body/endocrine-system.page>.

PHOTOS:

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http://www.ama-assn.org/ama/pub/physician-resources/patient-education-materials/atlas-of-human-body/endocrine-system.page

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Thank You For Watching

The endocrine system is composed of hormones and glands.

It Influential to almost every cell, organ, and function of the body including:

• regulating mood
• growth and development
• tissue function
• metabolism
• sexual function and reproductive processes.