60. 61. white + brown adipose connective tissue

Question 1

what type of cells do adipose tissue contain and function

Answer 1

adipocytes - fat storing cells ( BIGGEST STORGE SITE FOR ENERGY)
Also contains lipocytes
- storage for neutral fats (mostly triglycerides) +
regulators of body’s energy metabolism.

Question 2

what is white adipose tissue

Answer 2

more common type for fat storage
- consists of cells each containing one large cytoplasmic droplet of whitish-yellow fat.

Question 3

what is brown adipose tissue

Answer 3

Brown adipocytes release heat and warm the blood
-contains cells with multiple lipid droplets interspersed among
mitochondria: gives it darker look

Question 4

Function of adipose tissue

Answer 4

 helps to shape the surface
of the body
 shock absorbers/ cushion ( for palms and toe pads)
 helps wth thermal insulation of the body
 helps to keep some organs in place
 secretes various types of molecules (hormones -adipokines)
 has a rich blood supply

Question 5

structure white adipose tissue

Answer 5

-very large
- contains a single huge droplet of lipid filling
almost all cell (UNIOCULAR.)
- lipids usually removed for microscopy so looks like empty cell
-flattened nucleus squeezed to edge.
- thing ring of cytoplasm (signet ring cell)

Question 6

where is brown adipose tissue found

Answer 6

makes 2%-5% of the newborn body w
mainly in the back, neck, and shoulders,
greatly reduced during childhood and adolescence
- hibernating animals
- shoulder girdle of rodents

Question 7

why is it brown in colour

Answer 7

lots of BLOOD CAPILLARIES + MITOCHONDRIA (due to cytochromes)
. Brown adipocytes contain many small lipid
inclusions therefore MULTIOCULAR

Question 8

Function of brown adipose tissue

Answer 8

Mainly for postnatal life
thermoregulation
 produces heat+ lipid (not to store)
 resembles an endocrine gland

Question 9

structure of brown adipose

Answer 9

polygonal cells
 smaller cells (up to 60 µm)
 lots of of lipid droplets
 spherical central nucleus
 numerous brown mitochondria with abundant long cristae
 subdivided into lobules
 richly vascularized tissue