Explain how the adrenal cortex responds to long term stress.
What will be an ideal response?
Stress triggers the hypothalamus to release hypothalamic releasing hormones that act upon the anterior pituitary. The anterior pituitary will secrete ACTH, which acts upon the adrenal cortex. Glucocorticoids are released by the adrenal cortex, which causes protein and fat metabolism to occur instead of glucose breakdown. Immune cells are suppressed, resulting in a reduction of inflammation. Mineralocorticoids are also released, resulting in sodium ions and water being reabsorbed by the kidneys. Blood volume and pressure will also increase.
You might also like to view...
Which of the following animals does NOT have electroreceptors?
A. bony fish B. sharks C. duck-bill platypus D. skates E. pit viper snakes
According to the endosymbiont hypothesis, what cellular components originated from free-living bacterial cells?
a. mitochondria and nucleus b. nuclei and ribosomes c. chloroplasts and ribosomes d. chloroplasts and mitochondria e. endoplasmic reticulum and mitochondria
The organization of the lac operon, from upstream to downstream sequences, is represented by:
a. repressor gene -> lacZ -> lacY -> lac A b. lacZ -> lacY -> lac A c. lacZ -> lacY -> lac A -> operator -> promoter d. operator -> promoter -> lacZ -> lacY -> lac A
e. promoter -> operator -> lacZ -> lacY -> lac ASulfate-reducing bacteria (SRB) are very important in the cycling of sulfur within ecosystems because significant amounts of sulfate are present in almost all aquatic and terrestrial habitats, making SRB widespread and active.
Answer the following statement true (T) or false (F)