Knowing Your System | Hormone structure | Control of Hormonal Secretions | Hormones and Functions | Combining Forms |
---|---|---|---|---|
What is the difference between endocrine and exocrine glands?
Endocrine glands— Secrete their hormones directly into the bloodstream
Exocrine glands—Send chemical substances (tears, sweat, milk, saliva) via ducts to the outside of the body |
Structurally speaking, what are the two types of hormones?
Steroids and nonsteroids
|
How are hormonal secretions controlled?
Negative and positive feedbacks.
|
What is the function of melatonin
Helps regulate our natural clock, used in the research about our body's biological time
|
Cortic/o
Cortex, outer region
|
What are the major endocrine glands?
Thyroid gland
Parathyroid glands Adrenal glands Pancreas Pituitary gland Ovaries Testes Pineal |
Prostaglandins are lipids produced from the fatty acid,
arachidonic acid, in the cell membranes. Where do they act?
They act locally, meaning that they will only affect the organ in which they were produced
|
Which one is more common, negative or positive feedback?
Negative feedback
|
What is the function of oxytocin
Helps in stimulating contractions in the uterus during childbirth and also helps during the breastfeeding moments
|
Gonad/o
Sex hormones
|
What are the local hormones?
Messenger molecules that never reach the
bloodstream; not true hormones |
Where are the protein receptors for steroid hormones located?
Inside the target cell
|
What is negative feedback?
When hormones tries to bring back their regular levels of productions when this levels are too extreme.
|
What is the function of thymopoietin and thymulin?
Turning the T cells in our body into disease fighters that will protect us from intruders in the body
|
Pysh/o
Growing
|
Other than controlling and coordinate the body's metabolism, reproduction, growth and development, what other roles does the endocrine system play?
Responding to injuries, stress, and mood.
|
What are the polypeptides and the peptides formed from?
The aminoacids
|
When is the inhibition of the negative feedback removed?
When the hormone drops below its normal level
|
What is the function of the glucocorticoids?
Regulates metabolism and responds to illnesses in the body
|
Myx/o
Mucus
|
How do the nervous system and the endocrine system communicate with cells differently?
The nervous system uses neurotransmitters while the endocrine system uses hormones.
|
Define signal transduction
Signal transduction is a cascade of all the biological activity inside the cell membrane, beginning with the binding of the hormone.
|
Describe the method (b) of control of the endocrine system
Action -> nervous system -> endocrine gland -> target cells -> action
|
What is the function of the luteinising/follicle stimulating hormone?
Stimulates the production of sex hormones, and also help in maturing egg and sperm
|
-Agon
Assemble, gather together
|