The Endocrine System

Hormones, hormones, hormones The ____________________is made up of the __________ located in various parts of the body The chemicals they secrete are called __________. These hormones are transported by the __________ of the __________. The endocrine system: Helps __________ life activities Maintain __________ Helps the organism __________ to its environment Endocrine System glands hormones plasma blood coordinate homeostasis respond

Some words to live by The __________ cell or organ that the hormone is affecting These are special __________ located either on or in the __________ Combines with a specific __________ to produce a response These glands have __________ (salivary glands) Glands ____________________ Target Cell Or Organ specific proteins Receptor Proteins Target cell hormone Ducts (tubes) Exocrine Without ducts (tubes) Endocrine

Hormones and Receptors

Human Endocrine System

Human Endocrine Systems—the Players brain Located at the base of the __________ Sometimes called the __________ It controls the activities of many other __________ of the endocrine system. It produces __________ hormone __________ stimulating hormone, __________ stimulating hormone.   Located in the __________ Produces __________ which regulates __________. Embedded in the __________ gland Produces __________ Regulates __________ production. Master gland glands Pituitary Gland growth thyroid follicle neck Thyroid Gland thyroxin metabolism thyroid Parathyroid Gland parathormone calcium

Human Endocrine Systems—the Players Located on top of the __________ Produces __________ which is produced in times of emergencies (fight or flight reaction). __________ speeds up _______________ and _______________ Produces __________ __________ blood sugar levels and produces __________ which raises blood sugar levels. __________ - in abdomen of females Secretes __________ which influences the development of female _________________________ and __________ - the pregnancy hormone. __________ - in the __________ of the male Produces __________ which influence the development of male _________________________ and ____________________. kidneys adrenaline Adrenal Glands adrenaline Heart rate Blood flow stomach insulin Pancreas lowers glucagon ovaries estrogen progesterone Secondary sex characteristics Gonads (sex glands) testes scrotum testosterone Secondary sex characteristics Sperm production

Negative Feedback Mechanisms Endocrine system The _______________ system primarily _______________ itself through the use of _________________________. It __________ with other body systems in order to maintain __________. __________ that secrete __________ to their target cells rely on a __________ to the __________ (or ‘feedback’) to know when enough of the hormone has reached its __________. __________ rely on _________________________ almost every day __________ even realizing it. Self-regulates Negative feedback mechanisms communicates homeostasis glands hormones response stimuli destination Humans Negative feedback mechanisms without

Feedback Mechanism – lets take a drive endocrine The chemical regulation by the __________ glands is accomplished by a ____________________. Feedback mechanism As the flow chart depicts, Jason is receiving feedback from his speedometer about the current speed of his car. Periodically, Jason will receive feedback on the effects the added gas given to his car has on his speed. As long as the car fails to achieve a speed of 55 MPH, Jason’s speedometer will tell him to add more pressure to his car’s gas pedal.

Feedback Mechanisms A B C D

Is there a Doctor in the House? goiter thyroid __________ - An enlargement of the __________ gland caused by its inability to produce __________. __________ - Caused by insufficient amounts of __________ produced by the pancreas. This results in higher _______________ levels in the blood, and can lead to many secondary complications such as __________, ____________________, and ____________________ __________ - On over production of _______________ by the pituitary gland __________ - Under production of _______________ by the pituitary gland thyroxin diabetes insulin Glucose (sugar) blindness Circulation problems Healing problems Giantism Growth hormone Dwarfism Growth hormone

Just a quick thought… Which organelle(s) would have a function similar to the endocrine system ____________________ Controls and regulates all life activities (functions) in the cell Nucleus