What do you do here? (2)
The Amygdala
What is threat detection, fear response, and (or) associative learning
Motor Cortex .... Your Foot Moves
What is...
Motor Cortex (Frontal Lobe)
Central Nervous System (Spinal Cord & Cerebellum)
Peripheral Nervous System (Somatic Nerves)
Voluntary Muscle (Foot)
Foot Moves
A person experiences sudden emotional panic or physical danger.
Outcome: Activity in the Parasympathetic Nervous System
What is DOWN (Sympathetic arousal dominates while parasympathetic counter-regulatory activity decreases)
Exam panic gives Alex immediate acid reflux
What are Nervous & Digestive Systems (Sympathetic stress disrupts GI digestion)
Alex swaps 4 energy drinks a day for plain water.
What are Cardiovascular & Renal Systems (Lowers heart rate and balances fluids)
The Alveoli
What is facilitate the exchange of oxygen and CO2
Hypothalamus ... Increased Glucose in Blood
What is...
Hypothalamus
Anterior Pituitary Lobe
ACTH
Adrenal Cortex
Corticosteroids (Cortisol)
Increased Glucose in Blood
Carbon dioxide levels in the bloodstream rise significantly.
Outcome: The rate of respiration initiated by the medulla
What is UP (High CO2 levels stimulate the respiratory center in the medulla to speed up breathing)
Months of chronic academic panic cause Alex's period to stop.
What are Endocrine & Reproductive Systems (Pituitary stress signals halt ovarian cycles)
Alex practices 10 minutes of deep breathing before studying, allowing her parasympathetic system to stop her daily heartburn and digest food properly
What are Nervous & Digestive Systems (Parasympathetic activation restores stomach motility)
The Endometrium
What is line the inside of the uterus and provide a nurturing environment for a fertilized egg to implant and grow
Hypothalamus ... Release of Estrogens
What is...
Hypothalamus
Anterior Pituitary Lobe
Gonadotropic Hormones (LH, FSH)
Ovaries
Release of Estrogens
A runner becomes severely dehydrated on a hot afternoon.
Outcome: The volume of urine produced by the renal system
What is DOWN (The posterior pituitary releases ADH, causing the kidneys to reabsorb water and produce less urine)
Exam stress triggers bronchial spasms, wheezing, and hyperventilation.
What are Nervous and Respiratory Systems (Sympathetic arousal constricts airways)
Alex eats fiber and probiotic yogurt instead of instant ramen
What are Digestive & Nervous Systems (Healthy gut microbiota supports brain function)
The Pancreas
What is secrete enzymes that break down carbs, proteins, and fats, produce insulin
Oxygen enters mouth ... CO2 leaves mouth
What is...
Mouth (Inspiration)
Pharynx
Larynx
Trachea
Primary Bronchi
Secondary Bronchi
Bronchioles
Alveolar Ducts
Alveoli & Capillaries (Gas Exchange)
annnddd back
Sympathetic nervous system activation triggers a surge of catecholamines.
Outcome: The diameter of the pupils and bronchioles
Dehydration causes Alex's body to retain water and produce low urine volume.
What are Endocrine & Renal Systems (Pituitary releases ADH for kidney retention)
Alex starts weekly jogging sessions with a study friend.
What are Cardiovascular & Immune Systems (Improves cardiac fitness and reduces inflammation)
The Left Atrium of The Heart
What is receive oxygenated blood from the lungs, passively fill left ventricle with oxygenated blood
Deoxygenated Blood Arrives at Heart ... Oxygenated Blood Travels Away
What is...
Deoxygenated Blood arrives through Vena Cava
Right Atrium
Right Ventricle
Pulmonary Artery
Lungs (Alveoli & Capillaries)
Pulmonary Veins
Left Atrium
Left Ventricle
Aorta
Oxygenated Blood Travels Away
Chronic low-level stress and systemic inflammation persist unmanaged for decades.
Outcome: A person's long-term risk for developing chronic diseases like heart disease, diabetes, and Alzheimer's
What is UP (Sustained low-level inflammation accelerates chronic age-related disorders)
Living exclusively on instant ramen and fast food leaves Alex with persistent brain fog and mood crashes
What are Digestive & Nervous Systems (Gut dysbiosis disrupts neurotransmitters and cognitive function)
Alex cuts back on her hectic schedule to manage her constant panic, which restores her mental well-being and ends her amenorrhea
Nervous & Reproductive (Reducing nervous system stress arousal restores her period and improves her mental well-being)