Nerve06/cranial nerves/07facial

POINT!

The facial nerve (number VII cranial nerve) functions as the nerve for taste from the anterior 2/3 of the tongue, muscles of facial expression including orbicularis oculi muscle, salivary glands, lacrimal glands

The facial nerve (number VII cranial nerve) functions as the nerve for taste from the anterior 2/3 of the tongue. The nerve for the posterior 1/3 of the tongue is the glosso-pharyngeal nerve (number IX cranial nerve). Also the trigeminal nerve (number V cranial nerve) functions as the nerve for sensation of the oral cavity, such as the food temperature (hot/cold), or pain from oral injury.

The nerve that functions for facial sensation is the trigeminal (number V cranial nerve), while the nerve for facial muscle movement (facial expression, including orbicularis oculi muscle) is the facial nerve (number VII cranial nerve). Movement of facial muscle include the wrinking the forehead, puckering the mouth, lifting the corner of the mouth, etc. Thus, with facial nerve paralysis, the corner of the mouth is lowered and saliva is likely to flow out.

眼輪筋により目を閉じる神経は顔面神経（第Ⅶ脳神経）ですが、上眼瞼拳筋の運動により目を開けさせる神経は動眼神経（第Ⅲ脳神経）です。涙腺の神経も顔面神経（第Ⅶ脳神経）です。眼球運動させる動眼筋のうち、上斜筋は滑車神経（第Ⅳ脳神経）、外転筋は外転神経（第Ⅵ脳神経）の働きです。他の動眼筋はすべて動眼神経（第Ⅲ脳神経）の働きです。

Challenge Quiz

1.

The facial nerve is the number I II III IV V VI VII VIII IX X XI XII  正解! cranial nerve.

2.

顔面神経の機能は 嗅覚 視覚 外転筋・上斜筋以外の動眼筋の運動 上眼瞼拳筋の運動 毛様体(遠近調節)の運動 上斜筋の運動 結膜の感覚 咀嚼筋の運動 外転筋の運動 舌前2/3の味覚 (眼輪筋を含む)表情筋の運動 唾液腺の分泌 涙腺の分泌 重力の感覚 加速度の感覚 聴覚 舌後1/3の味覚 咽頭の感覚 頸動脈洞の血圧センサー 頸動脈小体の酸素、二酸化炭素センサー 嚥下筋の運動 舌根部の味覚 喉頭の感覚 胸腹部臓器の感覚 発声の筋の運動 胸腹部臓器の運動 頸部の筋の運動 舌の筋の運動 角膜の感覚 鼻腔の感覚 口腔の感覚 顔面の感覚 味覚 縮瞳筋の運動  正解!である。

3.

The facial nerve functions as the nerve for taste from the anterior 2/3 of the tongue muscles of facial expression including orbicularis oculi muscle salivary glands lacrimal glands taste from the posterior 1/3 of the tongue sensation of the face tongue muscles  正解!.