Catecholamines Flashcards
increased blood flow
increased glucose metabolism
Brain
Increased rate and force of contraction
Peripheral vasoconstriction
Cardiovascular system
Bronchodilation
Pulmonary system
Increased glycogenolysis
Increased contraction
Increased dilation of muscle vasculature
Decreased glucose uptake and utilization (decreases insulin release)
Skeletal muscle
Increased glucose production
Increased glycogenolysis
Liver
Increased lipolysis
Decreased glucose uptake
Adipose tissue
Decreased blood flow
Skin
Decreased protein synthesis
Decreased smooth muscle contraction
Increased renin release
Increased gastrointestinal sphincter tone
Gastrointestinal and genitourinary tracts
Acute as well as chronic stress inhibits several components of innate immunity, particularly decreasing natural killer cells
Lymphoid tissue
Inhibit and stimulate macrophage activity
Depends on availability of type 1/proinflammatory cytokines, presence or absence of antigenic stressors, and peripheral corticotropin-releasing hormone (CRH)
Macrophages
A patient experiences a stressor that activates the stress response. What is a physiologic effect seen related to the release of catecholamines into the bloodstream?
Increased heart rate
Bronchoconstriction
Increased insulin release
Decreased blood pressure
A patient experiences a stressor that activates the stress response. What is a physiologic effect seen related to the release of catecholamines into the bloodstream?
-Increased heart rate
-Bronchoconstriction
-Increased insulin release
-Decreased blood pressure
Correct Answer: A
The physiologic effects of the catecholamines on organs and tissues are:
increased heart rate and force of contraction
bronchodilation
decreased insulin release increased blood pressure (peripheral vasoconstriction).
