Which of the following primarily act on cell surface receptors? (select all that apply) a. steroid hormones b. catecholamines c. peptide hormones d. none of the above 5. Which statement
4. Which of the following primarily act on cell surface receptors? (select all that apply)
a. steroid hormones
b. catecholamines
c. peptide hormones
d. none of the above
5. Which statement(s) is/are true based on the drawing above? (choose all that apply)
a. the blue neurons could secrete cortisol
b. the green cells could be secreting insulin-like growth factors
c. a tertiary pathology occurs at the level of the blue neurons
d. negative feedback only occurs at the level of the blue neurons
e. the gold neurons are part of the portal system
f. the gold neurons could secrete oxytocin
6. Which of the following hormones is most likely to act for the longest period of time?
a. ACTH
b. TSH
c. Cortisol
d. Dopamine
e. TRH
7. Which of the following is derived from an amino acid?
a. Tyrosine
b. Epinephrine
c. Androstenedione
d. Prolactin
8. Based on the image above, the blue neuron is connected to the ______(a. anterior b. posterior) pituitary and a possible hormone released by this neuron may include ______ (a. GH b. dopamine c. vasopressin d. somatostatin)
9. If the concentration of a plasma carrier was diminished, what would this do to the half-life of a steroid?
a. increase half-life
b. decrease half-life
c. no change
d. it depends on the steroid
10. Put the steps involved in generation and release of peptide hormones in the correct order:
1)cleavage into active hormone
2) transport into blood capillary
3)mRNA translation and preprohormone entrance into the ER
4) release signal into ECF
5)vesicular transport into Golgi apparatus
6)signal sequence peptide cleavage into prohormone
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