My nana has this thing called bells palsy which makes one side of her face hang down.She can't move her mouth and her eye won't close.we are learning about nerves and I need to know which nerves make her smile the motor nerve or sensory nerve.She is sad because she can't smile anymore.Thank you.
Lower Motor Neurone =Bell's Palsy
Here is much more about it. I am sorry about your nana.
http://neuromuscular.wustl.edu/nanatomy/vii.htm
I'm sorry to hear about your nana's condition, Bell's palsy. Bell's palsy is a condition that affects the facial nerve, also known as the seventh cranial nerve. The facial nerve is responsible for controlling the muscles of the face, including those involved in smiling.
To answer your question, it is the motor nerve component of the facial nerve that controls the muscles involved in smiling. The motor nerves carry signals from the brain to the muscles, enabling voluntary movements such as smiling. In the case of Bell's palsy, the motor nerves that control the affected side of the face are weakened or paralyzed, leading to difficulty in moving the muscles and causing one side of the face to hang down.
On the other hand, the sensory nerves are responsible for transmitting sensory information, such as touch, pain, or temperature, from the face to the brain. They do not directly control the movement of muscles involved in facial expressions like smiling.
It's important to remember that Bell's palsy is usually temporary, and most people recover fully within a few months. However, I would highly recommend consulting with a medical professional for a proper diagnosis, treatment, and further guidance specific to your nana's situation.