Chapter 1 Flashcards
what are the leading causes of death in the U.S. according to the CDC?
- heart disease
- cancer
- unintentional injuries from COVID (poisoning, motor vehicle accident, overdose, downing, falls)
- COVID
- stroke
what are the leading causes of death in the world according to the WHO?
- heart disease
- stroke
- COPD
- lower respiratory infection
- neonatal conditions (developing countries)
what are the leading causes of death for low income countries?
- neonatal conditions
- lower respiratory infections
- ischemic heart disease
diseases are communicable (contagious)
what are the leading causes of death for high income countries?
- ischemic heart disease
- alzheimers
- stroke
more access to health care and diseases are not communicable (not contagious, preventable?)
disease
any disturbance of structure or function of the body (loss of homeostasis)
acute disease
contagious, caused by pathogen, 6 months or less
chronic disease
long lasting, more than 6 months (cancer/heart disease)
etiology
cause of disease
disease is due to…
structure or function gone wrong
structural disease
- structure changes in a cell, organ, etc.
- caused by lesions that occur in the body
- caused by external or internal mechanisms
- ex. unintentional COVID injuries, heart disease, alzheimers, cancer
functional disease
- no morphological abnormalities yet body functions are disturbed
- no visible lesions present initially (microscopic), over time structural changes will appear
- caused by physiological changes
- ex. hypertension, diarrheal diseases are both structural and functional
gross examination
can see with the naked eye
histologic examination
see changes under a microscope
lesion
change in DNA of the cell
structure and function are intimately related..
change in structure leads to change in function