endocrine system Flashcards
what is the endocrine system used for
to coordinate body responses
what is a gland
a structure that secretes substances
what are the two types of glands
endocrine and exocrine
what are exocrine glands
these glands release their product into ducts or tubes
what are endocrine glands
are ductless glands and produce hormones that are released into the bloodstream
why do endocrine glands have a rich supply of capillaries
they secrete hormones into the blood through capillaries
what biomolecule makes up hormones
proteins
what is a hormone
it is a chemical messenger produced by an endocrine gland and carried by the bloodstream to another part of the body and where it has a specific purpose
what is a steroid
a form of lipid
what other biomolecle can hormones be made of
lipids in the form of steroids
name 4 main endocrine glands
pituitary, hypothalmus, pineal, thyroid
write a short note on the pituitary gland
often called master gland… produces a rane of hormones that regulate other endocrine glands. produces FSH, LH and GH.
what does GH (growth hormone) do
causes body cells to absorb amino acids and form proteins which causes growth and elongation of bones
write short note on the hypothalamus
this gland link the nervous and endcrine systems. it secretes a hormone that controls the pituitary gland in reponse to messanges from the brain. it produces the hormone anti-diuretic hormone (ADH) which is stores in the pituitary and released when needed.
what does ADH do
it causes water to be reabsorbed in the kidneys- osmoregulation