<u>Answer</u>:
Cameron has been very stressed during harvest season while working on farm equipment in the evenings and harvesting the crops during the day. He comes down with the flu the day after his last field is harvested. The reason for his illness is likely that Cameron’s stress hormones suppressed the activity of Lymphocytes.
<u>Explanation</u>:
Immune system is the collection of billion number of cells that travel through our bloodstream. They defend our body against bacteria and viruses. White blood cells are the main immune cells in our body.
When a person gets stressed, the immune system's ability to fight gets reduced. The stress hormone “corticosteroid” suppresses the efficiency of the 'immune system' by reducing the number of "Lymphocytes". Lymphocytes are of two types:
a. "B cells" which produce antibodies and are released in the "fluid" surrounding the body cells.
b. "T cells" which gets locked to the 'infected' cell and destroy it.
Answer:
Berton and colleagues (2006) found that the regulation of avoidance behavior in mice confronted by an aversive social target requires BDNF (brain-derived neurotrophic factor) from the: <u>B. vental tegmental area (VTA)</u>.
Explanation:
The vental tegmental area (VTA) is located in the midbrain, this section of the brain contanins different type of neurons. This area is in charge of the reward system, that has to do with the reinforcement behavior.
Answer:
The country that has a trade deficit is US and the country that has a trade surplus is China.
A country has a trade surplus if the value of export is greater than the value of import.
A country has a trade deficit if the value of export is less than the value of import.
If the US buys goods from China, it is considered import to US and export to China
Total value of export in China / Total value of import to US:
Cost of goods and services purchased + humanitarian aid + amount spent by tourists + amount spent in the stock market
$800 + $100 + $200 + $1000 = $2100
Total value of export in US / Total value of import to China:
Cost of goods and services purchased + humanitarian aid + amount spent by tourists
$1000 + $300 + $600 = $1900
Explanation:
hope it helps
The Sudan, or Sudanian Region
