The liver does not secrete bile. true or false? ?

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4

The frequency in wich you perform certain exercise depends on the blank of the exercise