Which code represents injection Clolar, 1 mg?

The spread of diseases requires all of the following, except:

a. pathogen source. c. mode of transmis-sion. b. immunosuppression. d. susceptible host.

Found in the iris of the eye and the walls of blood vessels, _______________ smooth muscle contracts in response to neurotransmitters and hormones. 

Fill in the blank(s) with the appropriate word(s).Fill in the blank(s) with the appropriate word(s).