Quiz #1: Chapters 1,2. &3 Flashcards
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Dependent variable
a response, behavior, or outcome that is predicted or explained
Validity
the extent to which a measuring device measures what it claims to measure
Reliability
-The ability for the test to be done again and yield the same results
Systems of the body respond to:
- physical activity
- regular exercise
- stress (good & bad): bad stress increases blood viscosity (thickness) = artery blockage & also increases blood pressure
- changes in nutritional intake
- extreme environmental changes (sweating/shivering)
- disease conditions (immune system fighting off virus)
Nervous System
: acts through electrical signals to manage rapid responses of the body. Also responsible for higher functions including consciousness, memory, and creativity.
Endocrine System
acts by means of HORMONES secreted into the blood to manage processes that require DURATION rather than speed (metabolic activity/water/electrolyte balance)
Respiratory System
obtains oxygen from and eliminates carbon dioxide to the external environment. Helps regulate body PH by adjusting the rate of removal of acid-forming carbon dioxide
Circulatory System
transports nutrients, oxygen, carbon dioxide, waste, electrolytes, and hormones throughout the body
Integumentary System
a protective barrier between the external environment and the inside of the body, includes sweat glands. Adjusts skin blood flow to body temperature regulation
Muscular System
allows the body to movement through contractions and heat generation through contractions
Skeletal System
supports and protects body parts and provides calcium storage in bones
Immune System
protects the body against foreign invaders and tumor cells, assists with tissue repair
Energy System
not a physically defined system but important to all life requiring processes. Provides energy through aerobic and anaerobic pathways in all cells
Digestive System
obtains nutrients, water and electrolytes from external environment and transfers them into the plasma. Eliminates undigested food residue to external environment
Urinary System
regulates volume, electrolyte composition, and PH of the internal environment. Removes wastes and excess water, sodium, acids, bases,and electrolytes from the plasma and excretes them in urine
