Transcript Section 3.2 How Stress Affects Your Body How Stress Affects Your Body Objectives List in order the three stages of the body’s response to.

Section 3.2 How Stress Affects Your Body
How Stress Affects Your Body
Objectives
List in order the three stages of the body’s
response to stress.
Identify four types of early warning signs for
stress.
Describe the relationship between stress and
illness.
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Section 3.2 How Stress Affects Your Body
Health Stats Is there a relationship between stress and
the risk of catching a cold?
Predict why being in a prolonged stressful
situation might increase the likelihood of getting a cold.
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Section 3.2 How Stress Affects Your Body
Stages of Stress
The body’s response to stress occurs in three stages
• the alarm stage
• the resistance stage
• the exhaustion stage
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Section 3.2 How Stress Affects Your Body
Alarm Stage
Fight-or-Flight Response
1) Adrenaline released into blood.
6) Flow of blood to
skin reduced.
Sweating increases.
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2) Heart rate and blood
pressure increase.
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4
3) Flow of blood to brain
increases.
7) Flow of blood to digestive
system reduced. Digestion
slows. More stomach acid
produced.
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5
4) Breathing rate increases.
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8) Pupils open wide.
5) More sugar released
into blood. Ability of
blood clot increases.
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9) Muscles tense. More energy
produced by cells.
10) Lump forms in throat
as muscles contract.
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Section 3.2 How Stress Affects Your Body
Resistance Stage
• During this stage, your body adapts to the continued
presence of the stressor.
• The work that your body does during the resistance
stage uses up a lot of energy. As a result, you may
become tired, irritable, and less able to handle any
added stress.
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Section 3.2 How Stress Affects Your Body
Exhaustion Stage
• Your body can no longer keep up with the demands
placed on it.
• Your physical and emotional resources are depleted.
• Exhaustion occurs only if a stressor continues for a
long time—usually weeks, months, or even years.
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Section 3.2 How Stress Affects Your Body
Recognizing Signs of Stress
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Section 3.2 How Stress Affects Your Body
For: More on how to recognize stress
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Section 3.2 How Stress Affects Your Body
Stress and Illness
Stress can trigger certain illnesses, reduce the body’s
ability to fight an illness, and make some diseases
harder to control.
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Stomachaches
Asthma
Headaches
Lowered Resistance to Disease
Heart Disease
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Section 3.2 How Stress Affects Your Body
Vocabulary
fight-or-flight
response
The initial reaction of the body to stress during
the alarm stage.
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Section 3.2 How Stress Affects Your Body
QuickTake Quiz
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Section 3.2 How Stress Affects Your Body
End of Section 3.2
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