Increased muscular tension as a result of an upper respiratory tract viscerosomatic reflex is palpable over which muscles?

Increased muscular tension as a result of an upper respiratory tract viscerosomatic reflex is palpable over which muscles?

• A. Temporalis muscles
• B. Masseter muscles
• C. Sternocleidomastoid
• D. Occipitalis

Answer: (A)

Describing how an upper respiratory tract viscerosomatic reflex shows up, the idea is that visceral input from the airway can provoke a somatic response in muscles of the head and face that are closely linked through trigeminal pathways. The temporalis stands out because it is one of the main jaw-closing muscles directly supplied and modulated by the trigeminal system, and its muscle belly sits right where reflex tensions from URT irritation tend to manifest. This makes it the most palpable site for increased tone: you can often feel a taut, tender band in the temporal region when such a reflex is active. While other muscles like the masseter or neck muscles can be affected in various conditions, the temporalis is the classic and most readily detectable site for this specific reflex pattern.

Describing how an upper respiratory tract viscerosomatic reflex shows up, the idea is that visceral input from the airway can provoke a somatic response in muscles of the head and face that are closely linked through trigeminal pathways. The temporalis stands out because it is one of the main jaw-closing muscles directly supplied and modulated by the trigeminal system, and its muscle belly sits right where reflex tensions from URT irritation tend to manifest. This makes it the most palpable site for increased tone: you can often feel a taut, tender band in the temporal region when such a reflex is active. While other muscles like the masseter or neck muscles can be affected in various conditions, the temporalis is the classic and most readily detectable site for this specific reflex pattern.