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BMS 242 Core Physiology and Pharmacology > Introductory Lecture > Flashcards

Flashcards in Introductory Lecture Deck (65)
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1

What is the main component of the cell membrane

proteins

2

What is the function of the cell membrane

divide intracellular and extracellular fluid compartments

3

Where is the sodium concentration low

intracellular fluid

4

Where is the potassium concentration low

extracellular fluid

5

Why do cells have a high level of phosphate in the intracellular fluid of the cell

ATP

6

What is an important function of calcium

secondary messenger

7

Where is calcium concentration low

intracellular fluid

8

What is sodium important for the function of

electrically excitable cells

9

Which ions concentration can vary between cell types

chloride

10

Which has more proteins - plasma or interstitial fluid

plasma

11

What is an important pH buffer

bicarbonate

12

What is a positively charged ion called

cation

13

Give examples of anions

phosphate, chloride, proteins and bicarbonate

14

Why is transport of solutes and ions important

critical for function of all cells

15

How many pathways of transport are there

3

16

What are the three pathways of transport

diffusion, transport proteins, and endocytosis

17

Example of simple diffusion

oxygen and carbon dioxide in the lungs

18

What do transport proteins move across the membrane

small molecules and ions

19

Name an example of exocytosis

release of neurotransmitters at the synapse

20

What are the three basic types of protein transporters

channel, carrier and pump

21

True or False - channels are NOT gated

false

22

Name an example of a carrier transporter

sodium glucose co transport protein

23

Name an example of a pump

sodium potassium ATPase

24

Which is a high energy transport protein - channels, carriers or pumps

Pumps

25

What allows pump transport proteins to function

hydrolysation of ATP

26

which transporters are passive

channels and carriers

27

What do channels and carriers require in order to work

driving force

28

What sets up the driving force for channels and carriers

sodium potassium ATPase

29

TRUE or FALSE - sodium moves against its electrochemical gradient into the cell

true

30

True or False - movement of ions by ATPases is fast

false