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Endocrine System. 2011 Summary. Body conditions are controlled by which systems?. The nervous system The endocrine system. What are glands?. Glands are structures that secrete substances. Name the 2 types of glands?. Exocrine Endocrine.

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endocrine system

Endocrine System

2011

Summary

body conditions are controlled by which systems
Body conditions are controlled by which systems?
  • The nervous system
  • The endocrine system
what are glands
What are glands?
  • Glands are structures that secrete substances
what is the difference between an exocrine and endocrine gland
What is the difference between an exocrine and endocrine gland?
  • Exocrine – release their products into ducts
  • Endocrine – release their products (hormones) directly into the bloodstream
give 2 examples of exocrine glands
Give 2 examples of exocrine glands?
  • Salivary glands
  • Mammary glands
  • Gastric glands
  • Sweat glands
what is a hormone
What is a hormone?
  • Chemical messenger
  • Made of protein or steroid
  • Produced by endocrine gland
  • Carried in the bloodstream
  • To where is has a specific effect
can you name a hormone secreted from each gland
Can you name a hormone secreted from each gland

ADH

Melatonin

FSH, LH, GH

Parathormone

Thyroxine

Thymosin

Adrenaline

Insulin

Oestrogen

Testosterone

for a named hormone describe i deficiency symptoms ii excess symptoms iii corrective measures
For a named hormone describe: (i) Deficiency symptoms(ii) Excess symptoms(iii) Corrective measures?
  • Thyroxine – from thyroid, controls metabolism
  • Deficiency symptoms – reduced metabolism, lack of energy, weight gain, myxoedemia& goitre
  • Corrected by – Thyroxine tablets or iodine
  • Excess symptoms – increased metabolic rate, weight loss, bulging eyes, anxiety, Graves’ disease
  • Corrected by – surgery removing part of thyriod
how are thyroxine levels controlled in the body
How are Thyroxine levels controlled in the body?
  • Negative feedback
  • Low Thyroxine levels stimulate the pituitary to release TSH
  • Thyroid produces Thyroxine
  • Normal Thyroxine levels inhibit TSH
  • Thyroid wont produce Thyroxine
what are anabolic steroids what is the danger with using them
What are anabolic steroids?What is the danger with using them?
  • Drugs that build up muscle
  • Can lead to liver & adrenal disorders