It is the job of the respiratory system to a. support the body and allow movement b. transport nutrients and oxygen throughout the body c. exchange air between the environment and the body d. breaks down food to get nutrients

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.