The Body's Physical Systems - University of Pittsburgh

The Body's Physical Systems - University of Pittsburgh

The Bodys Physical Systems Health Psych Dr. Alan H. Teich The Neuron Neural Communication

Neural Communication Neurotransmitter molecule Receptor site on receiving neuron Receiving cell membrane Agonist mimics

neurotransmitter Antagonist blocks neurotransmitter CNS: Forebrain Corpus callosum Diencephalon

Thalamus & Hypothalamus Telencephalon Limbic System Cerebrum

The Limbic System Brain stem The Cerebral Cortex The Nervous System Nervous system

Central (brain and spinal cord) Peripheral Autonomic (controls self-regulated action of internal organs and glands) Skeletal (controls

voluntary movements of skeletal muscles) Sympathetic (arousing) Parasympathetic (calming) Sympathetic Nervous system Parasympathetic Nervous System

The Endocrine System The Digestive System The Digestive System Disorders Peptic Ulcers

sores usually in the duodenum Hepatitis Viral inflammation of the liver Cirrhosis

Cancer Metabolism Basal Metabolic Rate Exercise Metabolic Rate Dietary Thermogenesis The Cardiovascular System

Heart Myocardium Atria and Ventricles Blood Flow Blood Pressure Systole & Diastole Systolic: max force from contraction

Diastolic: pressure between contractions Fluid Dynamics

Cardiac output Blood volume Peripheral resistance Elasticity of vessels Viscosity of blood Blood Pressure Other factors that affect BP

Emotions: SNS Environmental Temperature Activity levels Hypertension

>140 mmHg systolic, >90 mmHg diastolic Risk factors family Hx body weight age

gender race Diseases of the Cardiovascular System Myocardial Infarction Angina Pectoris Stroke Immune

System Organs Immune System Organs of the immune system lymphocytes: white blood cells

from lymphatic or lymphoid organs: bone marrow thymus

lymph nodes spleen originate in bone marrow, migrate to thymus, mature into leukocytes lymph nodes capture antigens and hold lymphocytes lymph vessels ultimately empty into blood supply can spread cancer cells

spleen filters blood Soldiers of the Immune System White blood cells phagocytes: nonspecific immunity

macrophages and monocytes lymphocytes: respond to specific antigens T-cells: cell-mediated immunity

Killer T cells Helper T cells Memory T cells Suppressor T cells Delayed hypersensitivity T cells Soldiers of the Immune System B-cells: antibody-mediated immunity

B-cells produce plasma cells which produce antibodies (immunoglobulins - Ig) Igs attach to antigen and identify it for destruction Memory B-cells Helpe

rT Cells The Immune Response First lines of defense skin mucous membranes of respiratory and

digestive tracts Next: non-specific and specific immune processes phagocytes, B-cells, helper T-cells destroy antigen Finally: killer T-cells destroy

invaded cells Immune System and the Brain Auto-immune Diseases Rheumatoid arthritis: joints Rheumatic fever: heart muscle Multiple Sclerosis: myelin Lupus erythematosus: skin and kidneys

Genetics Chromosomes contain genes DNA dominant and recessive genes

phenotype and genotype mutations Polygenetic inheritance likely the case for many behavioral traits

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