please help i indicated the answer i got incorrect as well 1

please help! i indicated the answer i got incorrect as well.

1. C was incorrect.

Not all hormone that is secreted will reach and affect its targets because

A. Hormones can become inactivated or excreted

B. Hormones are often too dilute in the blood to have activate receptors

C. Antagonists compete for binding to receptors

D.

Hormones can be activated by metabolism

2. ( D was incorrect)

Glucagon and epinephrine together amplify each other’s effectiveness in opposing the actions of insulin. This amplification is an example of

A. permissiveness

B. agonism

C. synergism

D. antagonism

E. coordination

3.
E was incorrect

An anatomically distinct site for the release of neurohormones is called a(n)

A.  

neurohemal organ

B.  

anastomosis

C.  rete mirabile

D. adenohypophysis

E. paraventricular nucleus

Solution

Ques-1: Not all hormone that is secreted will reach and affect its targets because

Answer:

A. Hormones can become inactivated or excreted

D. Hormones can be activated by metabolism

Reason: both are correct

Not all hormone that is secreted will reach and affect its targets because some hormones are requires metabolic activation and some times hormones can become inactivated or excreted via excretory organs without acting on the respective receptors for example, there are two main classes of hormones, which meticulously need metabolic activation otherwise they do not exert their activity on the specific receptor. They are the progestins and the androgens, which are mainly due to organ metabolism so that initial hormone is referred as prehormone.

Ques-2: Glucagon and epinephrine together amplify each other’s effectiveness in opposing the actions of insulin. This amplification is an example of

Answer:C. synergism