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Flashcards in Lab 1 Deck (25)
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1
Q

Tonicity

A

The ability of a solution to change the shape (tone) of cells by altering the cells’ internal water volume

2
Q

Homeostasis

A

Maintenance of stable internal conditions

ex: temperature regulation

3
Q

Gradient

A

A gradient is a difference in concentration of a substance in one area relative to another

4
Q

Matter & energy, when free to move

A

travel down/along their concentration gradients

5
Q

Exchanged across surfaces

A

are matter and energy

6
Q

Diffusion

A

The tendency of molecules (or
ions) to move down their
concentration gradient until
equilibrium is reached

7
Q

Osmosis

A

The diffusion of a solvent, such
as water, through a selectively
permeable membrane until
equilibrium is reached

8
Q

Isotonic Solutions

A

Cells retain their normal size and shape in isotonic solutions (same solute/water concentration as inside cells: water moves in and out at same rate)

9
Q

Hypertonic Solution

A

Cells lose water by osmosis and shrink ( contains a higher concentration of solutes than are present inside the cells)

10
Q

Hypotonic Solutions

A

Cells take on water by osmosis until they become bloated and burst (lyse) (contains a lower concentration of solutes than are present inside cells)

11
Q

Frontal Section

A

separates front and back

12
Q

Transverse Section

A

separates top and bottom

13
Q

Median section (midsagittal)

A

separates right and left

14
Q

Lateral

A

Away from the midline of the body: on the outer side

15
Q

Medial

A

toward or at the midline of the body: on the inner side

16
Q

intermediate

A

between a more medial and a more lateral structure

17
Q

ventral (anterior)

A

toward or at the front of the body; in front of

18
Q

Dorsal (posterior)

A

toward or at the back of the body ; behind

19
Q

Form/function

A

the physical form of any anatomical structure is intimately linked with its function.

20
Q

anatomical position

A

standing, arms down, palms facing forward

21
Q

solutes

A

substances that are dissolved in a fluid

22
Q

solvent

A

the fluid that solutes are dissolved in

23
Q

solution

A

mixture of solutes and solvent

24
Q

diffusion

A

process in which particles disperse down their concentration gradient

25
Q

equilibrium

A

particles are evenly distributed, or in a steady state