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A state of worry or mental tension caused by a difficult situation.
What is stress?
Increased Heart Rate, Increased respiratory rate & apical breathing, & Restlessness or fidgeting
What are the physiological signs of stress?
True
Any condition whether it’s physical or emotional can threaten homeostasis. True or False?
General Adaptation Syndrome (GAS)
What is the response to stress for the body?
Alarm Phase, Resistance Phase, & Exhaustion Phase.
What are the phases of GAS?
Immediately
When does the Alarm phase occur?
Sympathetic division is signalled.
Energy reserves like glucose become available
Body prepares to deal with stress with fight or flight
List what happens during the alarm phase
Epinephrine
What is the most dominant hormone during the alarm phase?
When stress is longer than a few hours.
When does the resistance phase occur?
Epinephrine
GH Hormones
Thyroid Hormones
Glucocorticoids
What hormones are involved in the resistance phase?
Glucocorticoids
What is the dominant hormone in the resistance phase?
Modifies glucose metabolism
What is the fx of Glucocorticoid hormones?
Glucose is reserved nervous tissue
Lipids & amino acids are the last resort energy.
What energy is used in the resistance phase & how?
Liver creates more energy from the Glucocorticoid hormones to modify high sugar concentration.
How does the body create more energy during the resistance phase?
False
The resistance phase does not require more energy in contrast to the alarm phase. True or False?
When there’s not enough lipids in the body
When does the exhaustion phase occur?
Weeks or even months
How long can the body provide lipid reserves to maintain the resistance phase?
Homeostatic regulation breaks down & cells begin to malfunction
What are the effects of the exhaustion phase?
Potassium is needed for the sodium potassium pump for energy
Why is Potassium (K+) important in the exhaustion phase?
Aldosterone’s function is to stimulate the conservation of sodium and eliminate potassium, but potassium is needed to create energy. No potassium means not enough energy to function the body.
Why is aldosterone an issue in the exhaustion phase?
Inability to produce glucocorticoid hormones & no electrolyte balance.
When the collapse of vital systems occurs in the exhaustion phase, what can occur?
Potential heart disease and lowered immune system.
What are the prolonged effects of chronic stress?
A slow or difficult movement of feces
Define constipation
Diaphragm and then intra-abdominal muscles.
What are essential muscles when it comes to defecating?
Oral Cavity Mouth
Pharnyx
Esophagus
Stomach
Small intestines
Large Intestine
What are the major organs of the digestive tract?
Teeth
Tongue
Salivary Glands
Liver
Gallbladder
Pancreas
What are the accessory organs of the digestive system?
Ingestion
Mechanical digestion & propulsion
Chemical Digestion
Secretion
Absorption
Defecation
How does the digestive tract pass food? List the steps