hormones and endocrine system

Question 1

hormones

Answer 1

regulate energy use
maintain homeostasis
secreted by endocrine glands
reach all parts of the body with specific target cells
three main types of cells
protiens
amines
steriods

Question 2

lipid soluble hormones

Answer 2

• pass through the target cell membrane
• bind to an intercellular receptor
  hormone-reseptor complex binds to DNA

Question 3

water-soluble hormones

Answer 3

bind to receptors cell membrane target cell
receptor protein activates a signal-transduction pathway
series of relay of molecules transomits the signal
cell response occurs

Question 4

conrol of glucose

Answer 4

insulin and glucagon are antagonistic
negative feeback
alpha cells release glucagon
beta cells release insulin
blood glucose release of insulin triggers glucose uptake from the blood
blood glucose decreases releasing into blood

Question 5

steriod hormones regulate gene expression

Answer 5

receptors in cystol
hormone receptor complex
conformational change
nuclear translocation
activates gene transcription
production of protien

Question 6

posterior pituitary

Answer 6

• hormones made in the hypothalamus
• hormonal storage and transport in vesicles
• release into bloodstream

Question 7

anterior pituitary

Answer 7

special network blood vessels
hypothalamus- stimulatory or inhibitory hormones
act on the anterior pituitary
stimulate relase of hormones

Question 8

the thyroid

Answer 8

gland secrete thyroid hormone
regulates:
heart rate
muscle tone
bioenergetics