Check for a diagram on google images :) they have a lot that you can just trace
C. it cant be a since it exist
The medicare prospective payment system for reimbursing hospitals utilizes APCs.
APC stands for Ambulatory Payment Classifications that includes the outpatient payment system which is applicable only to the hospitals. There are different reimbursement methods for hospitals outpatients, inpatients, physicians, etc.
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Answer:
Hormones act as first messenger but not as second messengers.
Explanation:
Second messenger act as signaling molecule which are secreted in response to various biological signals generated by first messenger such as hormones,neurotransmitters etc.Second messengers include various bioactive molecules such as cyclic AMP(cAMP),cyclic GMP(cGMP),inositol triphosphate(IP3),diacylglycerol(DAG),calcium ions(Ca2+) etc.
Hormones are extracellular signaling molecules whereas second messengers are intracellular signaling molecules.
