Введение
Нервы головы и шеи
Nerve of the head and neck
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
Меньший затылочный нерв (или малый затылочный нерв) — это кожный спинномозговой нерв шейного сплетения. Он отходит от второго шейного (спинального) нерва (С2) (вместе с большим затылочным нервом). Он иннервирует кожу задней поверхности верхней части шеи и кожи головы позади уха.
Nerve of the head and neck
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
Строение
Nerve of the head and neck
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
Происхождение
Nerve of the head and neck
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
Он отходит от (латеральной ветви вентрального корешка). Он начинается между атлантом и осью.
Nerve of the head and neck
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
Ход и взаимоотношения
Nerve of the head and neck
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
Он огибает добавочный нерв (CN XI), проходя спереди от него. Затем он огибает и поднимается вдоль заднего края грудино-ключично-сосцевидной мышцы; редко он может проникать сквозь мышцу. Вблизи черепа он пробивает глубокую шейную фасцию. Далее он следует вверх по коже головы позади ушной раковины. Он разделяется на медиальный и латеральный сегменты между затылочным бугром и межмастоидной линией.
Nerve of the head and neck
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
The lesser occipital nerve (or small occipital nerve) is a cutaneous spinal nerve of the cervical plexus.''' It arises from second cervical (spinal) nerve (C2) (along with the greater occipital nerve). It innervates the skin of the back of the upper neck and of the scalp posterior to the ear. Structure
Origin
It arises from the (lateral branch of the ventral ramus It originates between the atlas, and axis. Course and relations
It curves around the accessory nerve (CN XI) to come to course anterior to it. It then curves around and ascends along the posterior border of the sternocleidomastoid muscle; rarely, it may pierce the muscle. Near the cranium, it perforates the deep cervical fascia. It is continues upwards along the scalp posterior to the auricle. It divides into medial and lateral segments between the inion, and intermastoid line.
Филиалы
У него есть ушная, мастоидная и затылочная ветви. Ушная ветвь иннервирует кожу верхней и задней части ушной раковины, соединяясь с мастоидной ветвью большой ушной. Эта ветвь иногда отходит от большего затылочного нерва.
It has an auricular, a mastoid, and an occipital branch. Its auricular branch supplies the skin of the upper and back part of the auricula, communicating with the mastoid branch of the great auricular. This branch is occasionally derived from the greater occipital nerve.
Распространение
Нерв обеспечивает сенсорную иннервацию верхней части задней поверхности шеи и прилегающего участка волосистой части головы позади ушной раковины; он также может участвовать в сенсорной иннервации самой ушной раковины.
The nerve provides sensory innervation to the upper part of the back of the neck and adjacent scalp posterior to the auricle; it may also contribute to the sensory innervation of the auricle itself.
Сообщения
Он контактирует с большим затылочным нервом, большим ушным нервом и ушной ветвью лицевого нерва.
It communicates with the greater occipital nerve, great auricular nerve, and the auricular branch of the facial nerve.
Изменение
Редко малый затылочный нерв может быть дуплицированным или триплицированным.
Rarely, the lesser occipital nerve may be duplicated or triplicated.
Клиническое значение
Проблемы с малым затылочным нервом вызывают затылочную невралгию. Блокада нерва затруднена из-за вариабельности его хода.
Problems with the lesser occipital nerve cause occipital neuralgia. Nerve block is difficult due to variation in the course of the nerve.