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Flashcards in Lab 1 Deck (25)
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1

Tonicity

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

2

Homeostasis

Maintenance of stable internal conditions
ex: temperature regulation

3

Gradient

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

4

Matter & energy, when free to move

travel down/along their concentration gradients

5

Exchanged across surfaces

are matter and energy

6

Diffusion

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

7

Osmosis

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

8

Isotonic Solutions

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

Hypertonic Solution

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

10

Hypotonic Solutions

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

Frontal Section

separates front and back

12

Transverse Section

separates top and bottom

13

Median section (midsagittal)

separates right and left

14

Lateral

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

15

Medial

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

16

intermediate

between a more medial and a more lateral structure

17

ventral (anterior)

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

18

Dorsal (posterior)

toward or at the back of the body ; behind

19

Form/function

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

20

anatomical position

standing, arms down, palms facing forward

21

solutes

substances that are dissolved in a fluid

22

solvent

the fluid that solutes are dissolved in

23

solution

mixture of solutes and solvent

24

diffusion

process in which particles disperse down their concentration gradient

25

equilibrium

particles are evenly distributed, or in a steady state