L12- Adipose tissue

Question 1

adipose tissue is a type of

Answer 1

connective tissue

Question 2

function of adipose tissue (3)

Answer 2

• protecting: shock absorber
• insulating
• storage fuel

Question 3

how many types of adipocytes

Answer 3

2

Question 4

name two adipocytes

Answer 4

white and brown adipose tissue

Question 5

function of white adipocytes

Answer 5

• passing and shock absorber
• insulation
• energy reserve

Question 6

function of brown adipocytes

Answer 6

• provide insulation and energy reserve to neonates

Question 7

white adipocytes are

Answer 7

unilocular

Question 8

how many lipid droplets in white adipocytes

Answer 8

one single enormous lipid droplet

- nucleus, cytoplasm and organelles all squeeze to one side

Question 9

fat adipocytes are

Answer 9

multilocular

Question 10

where is nucleus found in brown fat

Answer 10

in the centre

Question 11

lipid droplets in brown fat

Answer 11

multiple small lipid droplets with nucleus and cytoplasm squeezed int he centre of the cell

Question 12

difference between brown fat and white fat

Answer 12

• white has one single lipid droplet, brown has many lipid droplets
• white is unilocular, brown is multilocular

Brown fat has LOTS OF MITOCHONDRIA

Question 13

how much brown fat found in adults

Answer 13

very little

Question 14

brown adipose tissue contains

Answer 14

naturally occurring uncoupling proteins

Question 15

name a naturally occurring uncoupling protein

Answer 15

thermogenin

Question 16

thermogenin also known as

Answer 16

UCP1

Question 17

newborn infants and hibernating animals have lots of brown adipose to

Answer 17

maintain body heat around vital organs

Question 18

in response to col what is released

Answer 18

noradrenaline

Question 19

noradrenaline activates

Answer 19

1. lipase which releases fatty acids from from TAG in liver
2. fatty acid oxidation = production of NADH/FADH2 –> ETC
3. Fatty acids activate UCP1
4. UCP1 transports H+ back into mitochondria

SO electron transport is uncoupled from ATP synthesis
- energy of proton motive force released as extra heat