Cells and Tissues Flashcards
List down the levels of organization of the human body.
- ) Chemical Level
- ) Cell Level
- ) Tissue Level
- ) Organ Level
- ) Organ System Level
- ) Organism Level
Molecules in the form of _____ form organelles.
DNA (Deoxyribonucleic Acid)
Explain the Chemical Level
At a chemical level, we are all composed of atoms which combine to form molecules. These molecules then, in turn, form DNA which makes up the blueprint of the other higher levels of organization in the body.
Explain the Cell Level
Molecules from the chemical level form organelles which, together, make up cells.
Explain the Tissue Level
Cells, usually with the same function, come together to form tissues (groups of cells).
Explain the Organ Level
Different tissues, having the same function, group together to form organs with specialized functions.
Explain the Organ System Level
Groups of organs with synergistical functions group together to form organ systems.
Explain the Organism Level
When you put all of these organ systems together, they will form an organism.
What is “insulin” and what is its function?
Insulin is a hormone that increases the movement of sugar from the blood into other cells. It is typically used to treat people suffering from diabetes mellitus to regulate their blood sugar levels.
What is homeostasis (in simple terms)?
Homeostasis is the “state of equilibrium” in the body.
The maintenance of a variable around an ideal normal value or set point is called ____. The value of the variable fluctuates around the set point to establish a normal ‘range’ of values.
Homeostasis
Give two examples of homeostatic mechanisms that occur to maintain normal body temperature.
Sweating (response to high temperatures)
Shivering (response to low temperatures)
