Answer to Question 1
Stress and poorer immune functioning are associated with increases in negative moods, including depression, anxiety, hostility, and anger. People who are depressed have reduced NK cell activity, lower lymphocyte response, and more white blood cells (suggesting that the body is trying harder to fight infection). Other negative moods, including anger, hostility, and anxiety, are also associated with reduced NK cell activity and immune system suppression.
Many variables affect the relationship between stress and immune function, including how much time has elapsed since the stressor occurred, how much control people believe they have over the stressor, the person's age, and the time of day. Interpersonal interactions also affect cell activity and immune functioning. Loneliness, or perceived social isolation, is also associated with many indicators of poorer immune functioning.
Answer to Question 2
TRUE
Receptors in the autonomic nervous system: (a) sympathetic division; (b) parasympathetic division
Disorders of the Respiratory System
How to solve a linear system with three unknowns using substitution (Question 2 of 2)
The ability of a community to cope, adapt to, and mitigate the accelerating impact of climate change
Earth as a System: The Hydrologic Cycle
Respiratory system, Urinary and Nervous systems