Hormonal communication

Question 1

what do endocrine glands do?

Answer 1

secrete hormones
to be transported in the blood
and bind to target cells

e.g adrenal glands

Question 2

what are chemical messengers?

Answer 2

transported in blood
widespread
long lasting effects
e.g. steroids, (glyco)proteins, polypeptides

Question 3

differences between steroid and non-steroid hormones

Answer 3

steroids are…
lipid soluble
can diffuse across cell surface membrane
to bind to receptors often in cytoplasm

non steroids are…
not lipid soluble
cant diffuse across cell surface membrane
so bind complementary to receptors ON the membrane

Question 4

what is the adrenal glands made up of?

Answer 4

adrenal cortex and medulla
surrounded by capsule
both secrete hormones