What type of consent is demonstrated when a patient agrees to the application of a cervical collar after being informed it may be uncomfortable?

The type of consent demonstrated in this scenario is expressed consent. This occurs when a patient clearly indicates their willingness to receive medical treatment after being informed about the procedure and its implications. In this case, the patient acknowledges the potential discomfort of the cervical collar and still agrees to its application.

Expressed consent is crucial in emergency medical situations, as it represents a patient's active decision to proceed after understanding what will happen. This contrasts with other forms of consent, such as implied consent, where it is assumed that a patient would want treatment in an emergency situation without verbal agreement, or involuntary consent, which typically involves situations where individuals are unable to give consent due to mental incapacitation or other factors. Assumed consent is also not applicable here because it generally refers to situations where advance consent is implied based on the nature of the circumstances, rather than a direct agreement following informed consent.