Chapter 1-intro Flashcards
Anatomy
Structure of the body and the relations of its parts (names of structures)
Physiology
Functions of the body parts (how they work)
Atoms
The smallest unit of matter
Metabolism
All the different chemical reactions occurring in the body
Cell
The basic unit of Life
Histology
Study of Tissues
Organ Level
2 or more different tissues working together to perform a particular function
Chemical Level
- Simplest level
- Atomic
- Ex. DNA
Levels of Structural Organization (6)
- Chemical
- Cellular
- Tissue
- Organ
- System
- Organism.
How many systems are in the body?
11 (Integumentary, Skeletal, Muscular, Nervous, Circulatory, Lymphatic, Endocrine, Respiratory, Digestive, Urinary, Reproductive)
System Level
Group of related organs that perform a common function
Organism Level
- Human Body
- All the parts of the body fuctioning together
Homeostasis
Conditions where the body’s internal environment remails within certain limits (Maintaining Sameness)
The biggest threat to homeostasis
Stress
Stressor
Disrupts Homeostasis
-Disruptions are usually mild and temporary