Unit 2 vocabulary chapter 6&7

Immune System

body system consisting of organs, tissues, and cells that defend against infection.

Nervous System

body system that consists of the brain, spinal cord, and nerves that trade information throughout the body.

Tolerance

body's need for an increased amount of a substance to experience the effects once felt with smaller amounts

Stress

body's physical and psychological reactions to situations people perceive as threats.

Suicide Contagion

copying of suicide attempts after exposure to another person's suicide.

PanicAttacks

episodes of intense fear characterized by fast heartbeat, dizziness, shaking, trouble breathing, and chest pain.

Trauma

extreme stress due to deeply disturbing events, such as disasters, sexual assault, or violence.

Phobia

extreme, unrealistic fear of an object or situation.

Stressors

factors that lead to stress.

Mental Illness

health condition in which negative or unhelpful feelings or thoughts become so severe they interfere with daily life.

Therapist

healthcare professional who diagnoses mental illnesses and delivers therapy.

Suicide

intentional act of ending one's own life.

Withdrawal

negative symptoms that develop when a person with a physical dependence stops using a substance.

Stigma

negative, false, unfair beliefs associated with a circumstance, quality, or person.

Fight-or-Flight Response

physiological stress reaction in which the body mobilizes its resources to fight off or escape from a perceived threat also called the stress response.

Eustress

positive stress that encourages growth and motivation.

Distress

stress that causes negative feelings and harmful health effects.

Post-Traumatic Stress Disorder

stress-related disorder characterized by flashbacks, feelings of numbness, and difficulty sleeping after an extremely stressful event.

Mental Health Medications

substances that cause changes in the brain to reduce the symptoms of a mental illness.

Reproductive System

the body system consisting of organs that work together to create new human life is different between males and females.