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Final Exam Notes Motivation — the process that initiates, guides, and maintains goal-oriented behaviors Need — a requirement for survival (e.g. food, water); unmet needs motivate behavior Need hierarchy — Maslow’s model ranking human needs (physiological, safety, love/belonging, esteem, self-actualization) Drive — an internal state created by unmet needs (biological drive) Homeostasis — tendency of body systems to maintain internal stability Drive reduction — theory that motivation arises from the desire to reduce drives (i.e. satisfy needs) Arousal — state of being physiologically alert, awake, and attentive Optimal arousal — level of arousal leading to best performance (too low or too high impairs performance) Pleasure principle — Freud’s idea that behavior is driven to seek pleasure and avoid pain Incentive — external stimulus that “pulls” behavior (rewards, goals) Intrinsic motivation — performing behavior for internal satisfaction or interest Extrinsic motivation — performing behavior to earn external reward or avoid punishment Biological factors (eating) — e.g. hunger signals from hypothalamus, genetics, metabolism Learning factors (eating) — e.g. food preferences, cultural influences, classical conditioning Achievement — desire to accomplish goals, attain standards Self-efficacy — belief in one’s ability to succeed at a task Delay of gratification — ability to resist short-term temptations for long-term goals Emotion — complex reaction involving subjective experience, physiological arousal, and expressive behaviors Primary emotions — basic emotions (e.g. joy, anger, fear, disgust, surprise) Secondary emotions — more complex emotions (e.g. guilt, shame, pride) James-Lange theory — emotion results from interpreting bodily reactions (e.g. see bear → heart races → feel fear) Cannon-Bard theory — emotions and physiological reactions occur simultaneously Two-factor (Schachter-Singer) theory — emotion = physiological arousal + cognitive label Amygdala — brain region involved in processing emotions, especially fear and threat detection Emotion regulation — methods to control or influence one’s emotions Thought suppression — trying to push thoughts/feelings out of mind Rumination — repetitively focusing on negative feelings Positive reappraisal — reinterpret event in a more positive light Humor — using jokes or laughter to cope with negative emotions Distraction — shifting attention away from emotional triggers Chapter 11: Health & Well-Being Health psychology — field studying psychological influences on health, illness, and wellness Well-being — sense of physical, mental, and social flourishing Biopsychosocial model — model that health is determined by biological, psychological, and social factors Body mass index (BMI) — weight (kg) / (height (m))²; used to classify obesity / overweight Overeating factors — biological (metabolism, hormones), social (availability, norms), genetic predisposition Anorexia nervosa — eating disorder where individuals restrict food intake, fear weight gain, distorted body image Bulimia nervosa — cycle of binge eating followed by compensatory behaviors (e.g. purging, fasting, exercising) Binge-eating disorder — recurrent episodes of eating large amounts without compensatory behaviors Stress — a process by which we perceive and respond to events appraised as overwhelming Stressor — event or condition that triggers stress response Stress response — physical, emotional, and behavioral reaction to a stressor Major life stressors — big events causing substantial change (e.g. death, job loss) Daily hassles — everyday annoyances that accumulate stress (e.g. traffic, chores) General adaptation syndrome (GAS) — three-stage model of stress response GAS phases: alarm reaction → resistance → exhaustion Fight-or-flight response — physiological response to threat (sympathetic activation) Tend-and-befriend response — stress response especially in women: nurturing and social affiliation Type A behavior pattern — competitive, time-urgent, hostile personality (linked to heart disease) Type B behavior pattern — relaxed, easygoing, less competitive Coping — efforts to manage stress Primary appraisal — evaluating whether a stressor is harmful, threatening, or challenging Secondary appraisal — evaluating one’s resources to cope Emotion-focused coping — regulating emotional response to stressor Problem-focused coping — tackling the stressor directly to reduce or eliminate it Positive psychology — field focusing on strengths, well-being, and human flourishing Five ways to stay healthy — e.g. good diet, exercise, sleep, social support, stress management Chapter 12: Social Psychology Personal attributions — attributing behavior to internal traits or dispositions Situational attributions — attributing behavior to external circumstances Fundamental attribution error — tendency to overestimate personal factors and underestimate situational factors when explaining others’ behavior Actor/observer bias — tendency to attribute one’s own actions to the situation, but others’ actions to internal traits Self-fulfilling prophecy — expectation that leads you to act in ways that make it come true Stereotypes — fixed, overgeneralized beliefs about a group Prejudice — negative attitude toward a group Discrimination — negative behavior directed at a group Ingroup bias — favoring one’s own group Outgroup bias — negative attitudes toward those outside one’s group Attitudes — evaluations of people, objects, or ideas (positive/negative) Mere exposure effect — repeated exposure to something increases liking Cognitive dissonance — discomfort when beliefs, attitudes, or behavior conflict Postdecision dissonance — tension after making a choice, leading to justifying one’s decision Persuasion — process of changing attitudes Central route — persuasion via thoughtful consideration of arguments Peripheral route — persuasion via superficial cues (e.g. attractiveness, emotion) Social facilitation — improved performance in presence of others on simple tasks Social loafing — exerting less effort when working in a group Deindividuation — loss of self-awareness/inhibition in group situations Conformity — adjusting behavior or thinking to match a group standard Compliance — changing behavior in response to a direct request Obedience — following orders from an authority figure Milgram’s study — obedience experiments where participants (under instruction) delivered shocks to a “learner” Bystander intervention effect — tendency for individuals less likely to help when others are present Chapter 14: Psychological Disorders Psychopathology — study of psychological disorders; abnormal patterns of behavior, thoughts, or feelings Diathesis-stress model — view that psychological disorders develop due to genetic vulnerability + stress Biopsychosocial approach (to disorders) — disorders result from biological, psychological, and social factors DSM-5 — Diagnostic and Statistical Manual of Mental Disorders, 5th edition (standard classification of mental disorders) Specific phobia — irrational fear of specific object or situation Social anxiety disorder — intense fear of social situations or being judged Generalized anxiety disorder — chronic, uncontrollable worry about multiple domains Panic disorder — recurrent, unexpected panic attacks Obsessive-compulsive disorder (OCD) — obsessions (intrusive thoughts) and compulsions (ritualistic behaviors) Posttraumatic stress disorder (PTSD) — disorder following exposure to traumatic event, with flashbacks, avoidance, hypervigilance Major depressive disorder — persistent sadness, loss of interest, and other symptoms interfering with daily life Bipolar I disorder — periods of mania (and usually depression) Bipolar II disorder — hypomania (less severe mania) + major depressive episodes Schizophrenia — disorder characterized by delusions, hallucinations, disorganized speech, negative symptoms Positive symptoms (in schizophrenia) — delusions, hallucinations, disorganized speech Negative symptoms — flat affect, social withdrawal, lack of motivation Hallucinations — perceptual experiences without external stimuli Delusions — false beliefs held despite evidence to the contrary Disorganized speech — incoherent or illogical thought reflected in speech Disorganized behavior — inappropriate or bizarre behavior Biological risk factors (schizophrenia) — genetics, neurotransmitter abnormalities, brain structure Environmental risk factors — prenatal exposure, stress, family environment Borderline personality disorder — instability in mood, self-image, relationships, impulsivity Antisocial personality disorder (APD) — disregard for others’ rights, lack of remorse Dissociative amnesia — inability to recall important personal information (usually after trauma) Dissociative identity disorder (DID) — presence of two or more distinct identity states Autism spectrum disorder — deficits in social communication, restricted/repetitive behaviors ADHD (attention-deficit/hyperactivity disorder) — inattention, hyperactivity, impulsivity Chapter 15: Psychological Treatment Psychotherapy — therapy involving psychological techniques to treat mental disorders Psychodynamic therapy — therapy based on psychoanalytic concepts (e.g. unconscious conflicts) Humanistic therapy — focuses on growth, self-actualization, and client potential (e.g. Rogerian) Behavior therapy — uses learning principles (classical/operant conditioning) to change behavior Cognitive therapy — focuses on changing maladaptive thoughts or beliefs Cognitive-behavioral therapy (CBT) — integrates cognitive and behavioral methods Group therapy — therapy conducted with multiple participants simultaneously Family therapy — therapeutic approach focusing on family relationships Biological therapy — treatment using biological methods (e.g. medication, brain stimulation) Psychotropic medications — drugs that affect mental processes (e.g. antidepressants, antipsychotics) Electroconvulsive therapy (ECT) — inducing seizures via electrical current to treat severe depression Transcranial magnetic stimulation (TMS) — using magnetic fields to stimulate brain regions Deep brain stimulation (DBS) — surgical implantation of electrodes to stimulate brain structures Exposure (in CBT) — confronting feared stimuli directly in safe context Systematic desensitization — gradual exposure combined with relaxation Cognitive restructuring — changing negative thought patterns Exposure-response prevention — exposure without performing compulsive behavior (used for OCD) SSRIs (selective serotonin reuptake inhibitors) — class of antidepressants (e.g. Prozac, Zoloft) Treatment for depression — CBT + SSRIs often most effective Bipolar treatment — mood stabilizers (e.g"
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📘 Chapter 19: Blood – Full Simplified Study Notes (27 Slides) ⸻ Slide 1: Cardiovascular System • Cardiovascular system = heart, blood, blood vessels. • Blood’s job: • Delivers nutrients, hormones, oxygen, and chemical messages. • Carries immune cells to fight infections. • Why it matters: Without this transport system, cells would starve and toxins would build up. • Analogy: Like UPS + garbage service → delivers packages (nutrients, O₂) and removes trash (waste, CO₂). ⸻ Slide 2: Whole Blood • Whole blood = plasma + formed elements. • Hematocrit: percentage of blood volume made of cells. • Plasma: watery fluid. • Key properties of blood: • Temp: 38°C (100.4°F) → warmer than body surface. • Thickness: 5x thicker than water. • pH: ~7.4 (slightly alkaline). • Volume: Men = 5–6 L, Women = 4–5 L. • About 7% of body weight. • Example: If someone weighs 150 lbs, about 10 lbs of that is blood. ⸻ Slide 3: Blood Plasma • Plasma = liquid with proteins + solutes. • Proteins: • Albumins: keep water inside blood vessels (prevent swelling). • Globulins: antibodies → defense. • Fibrinogen: forms clots. • Other solutes: • Electrolytes: Na⁺, K⁺, Cl⁻, HCO₃⁻ (important for nerves/muscles). • Nutrients: glucose, fructose, amino acids. • Wastes: urea, uric acid. • Analogy: Plasma = soup broth carrying salt, sugar, proteins, and waste. ⸻ Slide 4: Formed Elements • Red Blood Cells (RBCs / erythrocytes): 99.9% of all blood cells. • RBC count: Men = 4.5–6.3 million/μL, Women = 4.2–5.5 million/μL. • Platelets: fragments needed for clotting. • White Blood Cells (WBCs / leukocytes): fight disease. • Think: Plasma is the liquid, formed elements are the “stuff floating inside.” ⸻ Slide 5: RBC Structure • RBCs lose their nucleus & organelles. • Consequences: • Can’t divide. • Can’t make proteins or repair. • Only use glycolysis (anaerobic metabolism) → no oxygen needed for energy. • Analogy: Like delivery trucks with no engine shop → they drive until they break down. ⸻ Slide 6: RBC Lifespan • RBCs have no nucleus, mitochondria, ribosomes → no repair. • Rely on glycolysis for energy. • Live about 120 days. • Must be recycled by spleen/liver. • Example: Like a disposable battery that runs until it dies. ⸻ Slide 7: RBC Shape & Function • Shape = biconcave disc (doughnut-like, thin middle). • Benefits: • High surface area → better oxygen exchange. • Can stack like coins → smooth flow. • Flexible → squeeze through tiny capillaries. • Analogy: Like a flexible frisbee that can bend and stack. ⸻ Slide 8: Hemoglobin • Main protein inside RBC. • Structure: • 2 alpha chains + 2 beta chains. • Each has heme group with iron atom (Fe). • Function: Iron binds oxygen → carries it around body. • Why recycle? Iron is valuable, so old RBCs get broken down to save it. • Analogy: Hemoglobin = oxygen backpack. ⸻ Slide 9: RBC Lifecycle • Starts from hemocytoblast (stem cell). • Branches into: • Myeloid stem cells: make RBCs + some WBCs. • Lymphoid stem cells: make lymphocytes. • Think: Hemocytoblast = tree trunk, RBCs and WBCs = branches. ⸻ Slide 10: RBC Production (Erythropoiesis) • Erythropoiesis = making RBCs. • Embryo: 1st 8 weeks = yolk sac → later liver, spleen, thymus, bone marrow. • Adult: red bone marrow only (vertebrae, sternum, ribs, skull, pelvis, ends of long bones). • Nutrients needed: amino acids, iron, vitamins B12, B6, folic acid. • Analogy: RBCs = cookies, bone marrow = kitchen, iron + vitamins = ingredients. ⸻ Slide 11: RBC Production Control • Controlled by erythropoietin (EPO). • Made by kidneys/liver when low oxygen (hypoxia). • Effects: • Increases stem cell division. • Speeds up hemoglobin production. • Blood doping: Athletes take EPO or reinfuse RBCs → more oxygen for muscles. • Risk: thicker blood → clots, strokes. • Analogy: EPO = coach yelling “make more RBCs!” ⸻ Slide 12: Blood Types • RBCs have antigens on membranes (A, B, AB, O). • Rh factor = + or –. • Plasma has antibodies (agglutinins): attack foreign antigens → cause clumping (agglutination). • Universal donor = O–. • Analogy: Blood type = ID card. If ID doesn’t match, antibodies attack. ⸻ Slide 13: RBC Summary • Know: • How typing works. • How RBCs are made. • What controls them. • Why they live 120 days. • How they’re broken down. • Analogy: RBCs = delivery trucks with expiration dates. ⸻ Slide 14: WBC Basics • WBCs = leukocytes. • Have nuclei, organelles, no Hb. • Functions: fight pathogens, remove wastes, destroy abnormal cells. • Only in blood briefly → then move into tissues. • Analogy: WBCs = body’s police force. ⸻ Slide 15: Neutrophils • 50–70% of WBCs. • Nucleus 2–5 lobes. • First responders → attack bacteria. • Use phagocytosis + enzymes. • Die quickly → pus = dead neutrophils + bacteria. • Analogy: Neutrophils = foot soldiers. ⸻ Slide 16: Basophils • <1% WBCs. • Release histamine (dilates vessels, causes swelling/redness). • Release heparin (prevents clots). • Trigger inflammation → work with mast cells. • Analogy: Basophils = fire alarms. ⸻ Slide 17: Eosinophils • 2–4% WBCs. • Stain red-orange. • Bi-lobed nucleus. • Kill parasites, respond to allergies. • Release toxic chemicals (nitric oxide, enzymes). • Help control inflammation. • Analogy: Eosinophils = exterminators. ⸻ Slide 18: Monocytes • 2–8% WBCs. • Largest WBC, kidney-shaped nucleus. • Become macrophages in tissue. • Eat large pathogens, dead cells. • Call fibrocytes → scar tissue. • Analogy: Monocytes = garbage trucks. ⸻ Slide 19: Lymphocytes • 20–30% WBCs. • Big nucleus, little cytoplasm. • Most live in lymph tissue. • Types: • T cells: attack infected cells. • B cells: make antibodies. • NK cells: kill cancer/virus cells. • Analogy: Lymphocytes = special forces. ⸻ Slide 20: WBC Production • From hemocytoblasts. • Myeloid stem cells: all except lymphocytes. • Lymphoid stem cells: lymphocytes. • Colony-Stimulating Factors (CSFs): • M-CSF = monocytes. • G-CSF = granulocytes. • GM-CSF = granulocytes + monocytes. • Multi-CSF = RBCs + WBCs + platelets. • Analogy: CSFs = managers assigning jobs. ⸻ Slide 21: Platelets • Fragments of cells, no nucleus. • Lifespan = 9–12 days. • Removed by spleen. • 2/3 stored for emergencies. • Analogy: Platelets = emergency patch kits. ⸻ Slide 22: Platelet Functions 1. Release clotting chemicals. 2. Form platelet plug at damage site. 3. Contract (actin + myosin) → shrink clot, close wound. • Analogy: Platelets = patch team pulling duct tape tight. ⸻ Slide 23: Hemostasis • Definition: stopping bleeding. • 3 phases: vascular, platelet, coagulation. • Analogy: Like fixing a leaking pipe step by step. ⸻ Slide 24: Vascular Phase • Vessel wall contracts (vascular spasm). • Endothelial cells: • Expose basement membrane. • Release endothelins → stimulate contraction/healing. • Become sticky → platelets attach. • Analogy: Pinch a hose to slow the leak. ⸻ Slide 25: Platelet Phase • Platelets stick to exposed collagen. • Form platelet plug (15 sec after injury). • Release chemicals: ADP, thromboxane A₂, serotonin, Ca²⁺, PDGF. • Feedback prevents over-clotting. • Analogy: Like putting your hand over a hole until repair arrives. ⸻ Slide 26: Coagulation Phase • Chain reaction of clotting factors. • Fibrinogen → fibrin (forms net). • Common pathway: 1. Factor X → prothrombinase. 2. Prothrombin → thrombin. 3. Fibrinogen → fibrin. • Clot retraction pulls vessel edges together. • Analogy: Casting a fishing net over the leak. ⸻ Slide 27: Fibrinolysis & Clotting Needs • Fibrinolysis: clot dissolves after healing. • t-PA → activates plasminogen → plasmin → digests fibrin. • Requirements for clotting: • Calcium (Ca²⁺): needed in all clotting steps. • Vitamin K: liver makes clotting factors; comes from food + gut bacteria. • Deficiency = bleeding problems. • Analogy: Once pipe is repaired, cut away the net (clot)
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