Match the units associated with a bone. 1.central hollow shaft
2. fat cells
3. blood vessel
4. protective covering
5. makes blood cells

perlosteum
red marrow
marrow cavity
yellow marrow
Haverslan canal

Here is it

CENTRAL HOLLOW SHAFT IS

marrow cavity

FAT CELLS

yellow marrow

BLOOD VESSELS

Haversian canals

PROTECTIVE COVERING

periosteum

MAKES BLOOD CELLS

red marrow

NOTE: ♡HOPE IT HELP♡

GOOD LUCK☆☆

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it