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Why is the face not included in the dermatome distribution?
The face is not included in typical dermatome distribution because the cranial nerves innervate the face instead of spinal nerves. The cranial nerves, specifically the trigeminal nerve (CN V), provide sensory innervation to the face.
What are hair nerves?
Hair is dead cells and actually has no nerves. When you pull on your hair, it is actually the living nerves in your scalp which register it.
How does the hair root plexus contribute to the sensation of touch on the scalp?
The hair root plexus is a network of nerves around hair follicles in the scalp. When the hair moves, it stimulates these nerves, sending signals to the brain that are interpreted as the sensation of touch on the scalp.
Where are the occipital nerves located?
The greater and lesser occipital nerves run from the region where the spinal column meets the neck (the sub-occipital region) up to the scalp at the back of the head.
Do you have nerves in your head?
Yes and no. There are nerves that innervate your skin and bones and meningeal coverings as well as the nerves that convey all of the input from your special sense organs but there are no "proper" nerves in your brain. In other words, your brain cannot feel anything itself. It can only interpret what other parts of your body are feeling.
What could pins and needles in the scalp be a symptom of?
A couple of causes of the pins and needles sensation in the scalp are severe tension headaches that arises from the neck muscles contracting and squeezing the nerves to the scalp plus the muscles of the scalp can also contract. Anxiety attacks can also manifest themselves with a pins and needles sensation of the scalp or anywhere else on the body.
Blood from the face and scalp is drained by the what?
The blood from the face and scalp is drained by the external jugular vein. This vein is responsible for carrying deoxygenated blood back to the heart from the head, face, and neck areas.
Where do carcinomas most often appear?
Neck , face, and scalp
What kinds of problems can cause headaches?
contraction of the muscles of the scalp, face or neck; dilation of the blood vessels in the head; or brain swelling that stretches the brain's coverings. Involvement of specific nerves of the face and head may also cause characteristic headaches
WHY DO YOU FEEL PAIN WHEN YOU PULL ON YOUR HAIR AND NAILS BUT NOT WHEN YOU CUT THEM'?
Because there are no nerves in your hair or nails. When you pull on them you are making the hair pull on your scalp, which contains nerves and can thus cause pain. Cutting your hair doesn't touch any nerves, so it doesn't hurt.
Which facial nerve controls which side of the face?
nerves do not control face movement, muscle does
How many nerves in the human face?
There are twelve pairs of cranial nerves in the human face that serve different functions such as sensory input, motor control, and autonomic control.
