Mercedes just stubbed her toe on the edge of her bedpost. in response, her brain will most likely signal the release of

The correct answer is endorphins.

Explanation:

An array of hormones discharged within the nervous system and the brain and exhibiting various physiological activities known as endorphins, they stimulate the opiate receptors of the body, leading to an analgesic effect. The two most general elements that result in the discharging of endorphins are stress and pain. With high levels of endorphins, one feels lesser negative influences of stress and less pain. Thus, stubbing of the toe on the edge of the bedpost will result in the discharging of hormone endorphin.

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.