Test 3: Anatomy & Physiology Packet 3 (pt.2) Flashcards
What does Homeostasis refer to
The process of keeping a state of balance in the body
What does Interdependence mean
That systems must work together to support human life
Define diesease
A disorder or incorrectly functioning organ, part, structure, or system of the body
What are some causes of diseases (6)
- Genetic or developmental errors
- Infection
- Poisons
- Nutritional deficiencies/ imbalance
- Toxicity
- Unfavorable environmental factors
SIGNS of disease are _______ they CAN be measured
Objective
SYMPTOMS of disease are _______ they CANNOT be observed by another person but a person that is already ill will experience them
Subjective
What are examples of SIGNS of disease
- Fever
- High blood pressure
- Rash
What are examples of SYMPTOMS of disease
- Dizziness
- Pain
- Blurry vision
Define Atrophy
A decrease in the size of cells as a result of age or diesease
Define Hyperplasia
An increase in the number of cells
Define Metaplasia
Cells being replaced by another type of cell
Define Dysplasia
Cells changing shape or orginization
Define Neoplasia
Cells changing in structure with an uncontrolled growth pattern
Define Tumor
A mass formed when abnormal and uncontrollable growth occurs
What are benign tumors
Tumors that grow in one place
Although benign tumors can’t spread or invade other body parts, they can be dangerous because……….
They can press on vital organs such as your brain
Define Malignant tumors
A type of tumor that crowds out healthy cells as it continues to grow. They’re also called cancer
Define immunity
The bodies ability to resist invaders and diseases they cause
Define Natural immunity
The bodies inborn resistance to disease
How many types of natural defenses are there
Two, physical and chemical
Define physical defense
Physically bares pathogens from entering the body
Define chemical defense
Once pathogens enter the body, chemicals break the pathogens down
Define Acquired immunity
When the body is exposed to an invader, but overcomes it
Define Natural/ Artificial acquired immunity
- Natural acquired immunity is caused by unintentional exposure
- Artificial acquired immunity is caused by intentional exposure
Define Passive/ Active acquired immunity
- Borrowing antibodies from another person or species, and it lasts a short time
- Active acquired immunity occurs when people develop their own antibodies
