3 study of human body involves
anatomy, physiology, pathology
human body, show what, known as , need to
anatomical non-pathological anomalies,
variations,
recognized
physiology focus on
systems oh human body, their organs and functions
pathology
disease processes
four major structures of human body
cells, tissues, organs systems
- cells
- simplest units of living matter
- maintain life
- reproduce themselves
- body begins with single, newly fertilized cell
- Tissue
Defintion
- more complex than cells
- organization of many similar cells, vary in amounts and kinds of nonliving inter cellular substance between them
- Organs
Defintion
- more complex than tissue
- different kinds of tissue arranged together to form a special function
eg. organ
stomach
organization of muscle, connective, epithial and nervous tissue
- Systems
Definition
- most complex
- organization of different kinds and numbers of organs arranged together to perform complex functions for the body
10 Systems
- skeletal
- muscular
- cardiovascular
- urinary
- reproduction
- nervous
- endocrine
- lymphatic
- respiratory
- digestive
Body functions
-physiological or pschological functions of body sytems
Homeostasis
- definition
- 4 main functions
- maintenance of body internal environment
1. RESPOND to changes in body environment
2. EXCHANGING materials between environment and ells
3. METABOLIZING food
4. INTEGRATING (co-ordinated) all diverse body activities
Homeostasis
- abilty decreases of the years
- max efficiency as young adult
- old age and infancy, least well
