Midterm 1 Flashcards
What is health?
“A state of physical, mental and social well-being - being and not just the absence of illness or disease”
Early cultures thought that the body was controlled by ____
Spirits
What were some early treatments?
Exorcism
herbs
Magical rituals
Trephination
Drilling a hole into the skull to “let the demon out”
Ancient Greece and Rome used what health perspective?
Hippocrate’s Humoral Theory
What are the 4 Humours?
Blood
Black Bile
Yellow Bile
Phlegm
In the ancient health perspective, they view the mind and body as separate or together?
Separate
In the Middle Ages, disease was seen as a ____ problem and caused by ____
Spiritual Problem
Sin
Health perspectives of the Renaissance
A scientific revolution
More understanding of how the body worked
Influenced by Descartes (the body is a machine –> mind and body can communicate)
Biological Model of Health
Health is the absence of disease
Illness is physical
Views body as a machine
Emphasis on diagnosis and treatment
Biopsychosocial Model of Health
Health and illness are consequences of the interplay of biological, psychological and social factors
Intensive Repeated Measures Sampling
Instead of being sampled over a long period of time, people are sampled frequently in a short time span
Neurotransmitters
Electrochemical Messengers
Central Nervous System
Brain
Spinal cord
Lower level structures of the brain
Medulla (breathing, heart rate)
Reticular Formation (sleep/wake)
Thalamus (senses)
Cerebellum (body balance and coordination)
Limbic System
Amygdala
Hippocampus
Hypothalamus
Peripheral Nervous System
Autonomic Nervous System
Somatic Nervous System
Endocrine Glands
Pituitary Gland
Adrenal Gland
Pancreas
Thyroid Gland
Systolic
Maximum force in arteries with each heart contraction
Diastolic
Resting pressure between myocardial contractions
Asphyxia
Too little oxygen and too much CO2
Anoxia
Shortage of oxygen
Antigens
Substances (bacteria, viral, fungi) that can trigger an immune response
What are allergies
They are immune responses to (normally) harmless substances
Organs of the immune system
Bone Marrow Thymus Lymph Nodes Lymph vessels Spleen
Phagocytes
What are the two types?
Non-specific immunity. They engulf and ingest antigens
- Macrophages - attach to tissue and stay there
- Neutrophils - circulate the blood
Lymphocytes
Tailored to specific antigens
Cell-mediated immunity
T-cells, there are 5 different types
Antibody-mediated Immunity
B-cells attack the antigens directly while they are still in the blood stream before they enter cells
What are the 3 lines of immune system defence?
- Skin
- Non-specific and specific immune processes
- T-cells
What is the primary function of the digestive system
To break down food, absorb nutrients and excrete waste
Disorders of the digestive system
Peptic Ulcers
Hepatitis
Cirrhosis
Cancer
Stress activates which two body systems?
Nervous system and endocrine system
Sympathetic-Adrenomedullary (SAM) Pathway
Fast Acting
> leads to the release of adrenaline and noradrenaline
Sympathetic Responses to Stress (6)
- Increased heart rate and blood pressure
- Constriction of blood vessels
- Increased respiration
- Bronchial dilation
- Pupils dilate
- Digestion decreases
Hypothalamic-Pituitary Adrenal (HPA) Axis
Slow Acting
Hypothalamus –> corticotropin-releasing factor (CRF) –> Pituitary –> adrenocorticotropic hormone (ACTH) –> Adrenal Cortex –> Cortisol
What is stress
It is the perceived discrepancy between the physical or psychological demands of the situation ad the resources one has
Fight or flight response
The physiological reaction of people and animals in response to perceived danger