Osteoblasts and osteoclasts are both: types of bone cells. components of the bone matrix. nutrients absorbed from food. found only in the fetal skeleton

Osteoblasts and osteoclasts are both types of bone cells.

Explanation:

Bone is a major component of the skeletal system which is made up of highly vascular living structures that are continuously being remodelled. This is brought about by the bone cells which includes the osteoblasts and osteoclasts.

--> OSTEOBLASTS: these are the bone-forming cells that secrete collagen and other constituents of bone tissue. They are present in the center of ossification of immature bone.

--> OSTEOCLASTS: Their function is resorption of bone to maintain the optimum shape. This takes place at bone surfaces.

The balance of osteoblast and osteoclasts activity maintains normal bone structure and functions.

A.)  types of bone cells.

Explanation:  Osteoblasts   build up  bone tissue &

Osteoclasts   break down  bone tissue.  

answer; i believe the correct answer is (progesterone);

this disease is :

* endemic (present in a defined area that is a village)

* a bacterial infection (treated with antibiotic)

* communicable by contact (by the hands)

manu-porterage is the most common mode of transmission, it transmits germs from one individual to another via the hands. this concerns infections of exogenous origin.

endemic disease, or endemic disease, refers to a disease that is constantly present in a given population, often tied to a specific geographic origin, as opposed to a pandemic that is not a sporadic disease.

antibiotics are molecules that have the property of killing (bactericidal) or limiting the spread (bacteriostatic) of bacteria.