BIO SCI 47 Study Guide - Midterm Guide: Adaptive Immune System, Thymus, Glucocorticoid
16 May 2018
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● Bruce-Parks Effect
○ Mice eat their own babies
○ If females smell male, she will eat babies so she can be more receptive for the
better male
■ They eat babies to get energy back that it took to make babies
○ If she’s pregnant and smells a male, it can increase CRH and she can
spontaneously abort
■ Better chance of survival with these babies
● Direct approach, fight for your lady, high rankers
● Indirect approach, sneaker male, they just sneak in and win her over
○ Dominant male never sees him as a threat
Immune System
● T Cells are made in the thymus
● Glucocorticoids cause thymus gland to shrink
● Interleukins is a message sent by T Cell
○ Type of cytokine
○ Part of adaptive immune system
● CRH releases in seconds, enhances immune system
● Glucocorticoids release over time and weaken immune system
● Kiecolt-Glaser did the blood tests of students before and during exams
○ The blood cells taken from the students before the test had more T Cells
■ Stress affects immune system
● Glucocorticoids inhibit inflammation
○ Long term use of GCs cause cushings and shrink adrenals
● Allergies are when the immune system mistakens a normal thing as an invader
● Sometimes your body recognizes a part of you as an infectious body
○ Autoimmune disease
● Some pathogens have glucocorticoid receptors that sense when glucocorticoid levels
are high, meaning the immune system is suppressed and then they come out to attack
● Rats that can’t escape shock are under more constant stress so they are unable to reject
tumors
○ Glucocorticoid levels are higher, inhibiting immune system, and the ability to fight
tumors
Document Summary
If females smell male, she will eat babies so she can be more receptive for the better male. They eat babies to get energy back that it took to make babies. If she"s pregnant and smells a male, it can increase crh and she can spontaneously abort. Better chance of survival with these babies. Direct approach, fight for your lady, high rankers. Indirect approach, sneaker male, they just sneak in and win her over. Dominant male never sees him as a threat. T cells are made in the thymus. Interleukins is a message sent by t cell. Crh releases in seconds, enhances immune system. Glucocorticoids release over time and weaken immune system. Kiecolt-glaser did the blood tests of students before and during exams. The blood cells taken from the students before the test had more t cells. Long term use of gcs cause cushings and shrink adrenals. Allergies are when the immune system mistakens a normal thing as an invader.
