Chapter 1 Flashcards
(22 cards)
Which element is the most abundant, by mass, within the human body?
Oxygen, due to humans being mostly made of water
-Oxygen is also apart of other components of our body as well such as nucleic acid
Thinking about the Periodic table, which element is the most abundant, by number, within the human body?
Hydrogen, mostly made of water so there is a lot of hydrogen
Teleological
-science or doctrine that attempts to explain the universe in terms of ends or final causes
-Looking at something in the future
-Something may or may not happen
Mechanistic
- that which explains the phenomena of nature on the principles of physical processes
-Start to explain a story
-often with sequence of events
Why do we breath (mechanistic)
o When we stop breathing cellular respiration, oxygen get expelled and ETC occurs creating metabolic water, breaking down sugars, and ATP
o O2 decreases
o CO2 increases in and around the cells + H2O H2CO3 HCO3- + H+
o Created a Hydrogen proton, pH levels changed more acid
o Blood circulating, cells in brain monitoring blood pH
o Seeing there is a lot of acid present
o Action potential occurs to diaphragm, contracts (flatten), lungs expand allowing air in
- Why do we breathe? (teleological answer)
o To get oxygen to our body to stay alive
Reason for physiology
Knowledge of nature
Study of the mechanisms by which living organisms function
Functionality of the body
Cell, Tissues, Organs, Systems, Whole Body
Why is the functionality of the body so important
Each on has to work together to create the whole body and to keep it working
Water inside the cell, composes the membrane
ICF, Intracellular Fluid
Importance of the Intracellular Fluid
Water outside of the cell but inside the body
ECF, Extracellular Fluid
Importance of the Extracellular Fluid
ECF is the environment of the cell
Cell gets the good things it needs to live from the ECF
Also the cell dumps its waste into ECF
Why is the fluid so important around the cell
The fluid keeps the cell health. If the fluid where to go bad the cell suffers, causing tissue to suffer, organs to fail, sickness occurs
What is the internal environment of the body
Extracellular Fluid
Parts of the ECF
Interstital Fluid
Blood Plasma
Interstitial Fluid
all fluid around cells except in a blood vessel
Blood plasma
In a blood vessel but not in a cell
Homeostasis
Maintenance of relatively stable internal environment
What internal environment needs to be kept stable
The ECF is kept constant, lots of good little of bad
Will the body always be at a constant
There will be fluctuation with levels, as there is a range to stay within
What does the body focus on to keep the body constant
o Concentration of nutrients (glucose, amino acids, etc.) have good stuff to grow and thrive
o Concentration of gases (O2, CO2, etc.) keep them at the right levels
o Concentration of wastes (urea, ammonia, etc.) do not want to accumulate
o Concentration of water & salt (=osmolarity) balance
o pH (get out of wack can denature proteins)
o Temperature, homeothermic animals like to keep almost perfect temp
