hormones. teen steroids in the news hormones chemical messengers produced in one part of the body,...
TRANSCRIPT
![Page 1: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/1.jpg)
Hormones
![Page 2: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/2.jpg)
Teen SteroidsIn The News
![Page 3: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/3.jpg)
Hormones
• Chemical messengers
• Produced in one part of the body, have an effect on another part
• Carried in bloodstream
![Page 4: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/4.jpg)
Chemical Signals
![Page 5: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/5.jpg)
Endocrine System
• Hormonal system of vertebrates
• Endocrine glands secrete hormones– Ductless– Empty into bloodstream
• Exocrine glands– Secrete products into ducts
![Page 6: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/6.jpg)
Hormone Actions
• Affects parts distant from gland
• May affect numerous parts of the body
• Effects take longer than nervous system
• Effects may be long lasting
![Page 7: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/7.jpg)
Types of Hormonal Control
• Regulation
• Response
• Reproduction
• Growth & development
![Page 8: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/8.jpg)
Human Endocrine System
![Page 9: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/9.jpg)
Hormone Activity
• Affect only target cells
• Hormone must bind to a receptor
• Receptor activates chain of events
![Page 10: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/10.jpg)
Classes of Hormones• Peptide hormones
• Steroid hormones
![Page 11: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/11.jpg)
Hormone RegulationFeedback Loops
![Page 12: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/12.jpg)
Stimulation of Endocrine Glands
• Direct stimulation by nervous system
• Indirect stimulation by nervous system by means of releasing hormones
• Concentration of specific substances in the bloodstream
![Page 13: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/13.jpg)
Pituitary Gland• Secretes 9 major hormones• Hangs from the underside of the brain• Regulated by hypothalamus
![Page 14: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/14.jpg)
Hypothalamus Regulation of Pituitary
• Anterior pituitary– Hypothalamus produces
releasing hormones
• Posterior pituitary– Neural regulation
![Page 15: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/15.jpg)
![Page 16: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/16.jpg)
Pituitary Hormones
![Page 17: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/17.jpg)
Growth Hormone
• Controls normal growth
• Hypersecretion– Gigantism – Acromegaly
• Bones of hands & face thicken
![Page 18: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/18.jpg)
Pineal Gland
• Embedded within brain
• Produces melatonin– Increase in secretion at night– Helps set circadian rhythms
![Page 19: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/19.jpg)
Thyroid Gland
• Below level of voice box
• Hormones that regulate metabolism
• Most body cells have receptors
• Negative feedback loop regulates release
![Page 20: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/20.jpg)
![Page 21: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/21.jpg)
Thyroid Disorders
• Graves disease– Hyperthyroidism– Rapid heart rate– Nervousness– Protrusion of eyes
![Page 22: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/22.jpg)
Thyroid Disorders
• Goiter – Hypothyroidism– Slow growth– Caused by insufficient
iodine in diet– Thyroid enlarges
![Page 23: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/23.jpg)
Parathyroid Gland
• Embedded on posterior of thyroid gland
• Secretes parathyroid hormone (PTH)
• PTH works antagonistically to Calcitonin– Calcitonin produced in Thyroid– Regulate calcium levels
![Page 24: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/24.jpg)
![Page 25: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/25.jpg)
Adrenal Glands• Located on top of kidneys
• Each gland has two parts– Adrenal cortex (outer)– Adrenal medulla (inner)
![Page 26: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/26.jpg)
Adrenal Hormones
• Adrenal cortex – Corticosteroids
• Mineralocorticoids• Glucocorticoids
• Adrenal medulla– Cells similar to neurosecretory cells– Epinephrine & norepinephrine
![Page 27: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/27.jpg)
Alarm Reaction to Stress
![Page 28: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/28.jpg)
Pancreas
• Endocrine portion in islets of Langerhans
• Hormones that regulate levels of glucose
![Page 29: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/29.jpg)
![Page 30: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/30.jpg)
Diabetes
• High levels of glucose in blood– Lack of insulin– Inability of tissue to respond to insulin
• Two types– Type I = insulin dependent
• Pancreas does not produce enough insulin
– Type II• Often occurs later in life
![Page 31: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/31.jpg)
Other Endocrine Glands
• Thymus – Hormones to mature lymphocytes
• Ovaries– Estrogens & progesterone
• Testes – testosterone
![Page 32: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/32.jpg)
![Page 33: Hormones. Teen Steroids In The News Hormones Chemical messengers Produced in one part of the body, have an effect on another part Carried in bloodstream](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bffb1a28abf838cc0d2a/html5/thumbnails/33.jpg)