Superior Nuchal Line And External Occipital Protuberance

The superior or upper or descending. Transverse cervical artery dorsal perforating branches of posterior intercostal arteries.

Nerve Supply Of Scalp Scalps Facial Aesthetics Anatomy

Extending laterally from above is the ridge attach on the head.

Superior nuchal line and external occipital protuberance. Also called the inion. The superior fibers attach on the medial third of the superior nuchal line and the external occipital protuberance of the occipital bone MUSCULO-SKELETAL SYSTEM - Axial Skeleton Muscles of the Head Neck Torso You will be responsible for being able to identify the skeletal structures on the bones both articulated and disarticulated and to know the functionpurpose as stated for each part. The safe zone for occipital screws is located within an area measuring 2 cm lateral and 1 cm inferior to the external occipital protuberance along the superior nuchal line C1 lateral mass screws often skipped due to angle at base of skull making it more difficult to place a rod.

The squamous part of occipital bone is situated above and behind the foramen magnum and is curved from above downward and from side to side. The superior nuchal line radiates laterally from the protuberance. The superior nuchal lines join medially to the external occipital protuberance.

Middle third of the Line forms the apex of the posterior triangle and is related to the occipital artery. The superior nuchal line limits the lower boundary of the perpendicularly flat occipital plane and creates a ridge that spreads out across the entire occiput. The inferior nuchal lines run laterally on both sides from the midpoint of the crest.

The inferior nuchal line runs further inferiorly. Studies were undertaken using caliper measurements and dual-energy x-ray absorptiometry of the superior nuchal line SNL the external occipital protuberance EOP and the inferior nuchal line INL. Data indicate that the bone at the INL has a similar volumetric bone density as the bone at the SNL despite having half the thickness.

The highest nuchal line extends laterally from the external occipital protuberance and is the site of origin of the epicranius muscle and epicranial aponeurosis. The external surface is convex and presents midway between the summit of the bone and the foramen magnum a prominence the external occipital protuberance and inion. The interior surface of the squamous part contains the internal occipital protuberance occupied by the torcular Herophili which is the junction of the sagittal sulcus grooves of the transverse sinuses and the occipital sulcus.

Extending lateralward from the external occipital protuberance on either side are two curved lines one a little above the otherThe lower is termed the superior nuchal lineThe superior nuchal line gives origin to the Occipitalis and Trapezius and insertion to the Sternocleidomastoideus and Splenius capitiT. It is on the posterior skull on the medial coronal place. The external occipital protuberance is situated near the middle of the occipital squama between two curved slightly raised lines the superior nuchal line and the highest nuchal line the site where muscles such as the occipitalis and the trapezius the muscles of the head and neck attach.

Elevates retracts and rotates scapula. The occipital vein begins as a plexus at the posterior aspect of the scalp from the external occipital protuberance and superior nuchal line to the back part of the vertex of the skull. The superior nuchal line which lies below the higher nuchal line serves as a site of attachment for the trapezius sternocleidomastoid and splenius capitis muscles.

A vertical ridge the external occipital crest descends from the external occipital protuberance to the midpoint of the posterior margin of the foramen magnum. Centrally the supreme nuchal line goes downwards at the bottom in order to form a distinct external occipital protuberance that is located somewhat over the situation of the superior nuchal. The median nuchal line extends from the external occipital protuberance to the foramen magnum.

However it may be difficult to detect pulsation of the occipital artery because the artery is thin its course is variable and hair may make. External occipital protuberance superior nuchal line inferior nuchal line foramen magnum occipital condyle hypoglossal canal jugular foramen. Superior nuchal line external occipital protuberance liga- mentum nuchae spinous processes of CVII to TXII Spinous processes of TVI to LV and sacrum iliac crest ribs X to Xll Insertion Lateral one-third of clavicle acromion spine of scapula Floor of ihtertubercular sul- cus of humerus Latissimus dorsi.

There a faint recognizable supreme nuchal line is located over this ridge. The superior nuchal line runs slightly inferior. The semispinal capitis muscle inserts above it.

Nuchal line approximately halfway between the external occipital protuberance and the mastoid process 2 3. Lower fibers depress scapula Blood Supply. The nuchal ligament extends from the external occipital protuberance on the skull and median nuchal line to the spinous process of the seventh cervical vertebra in the lower part of the neck.

Another curved line just below the highest nuchal line. It provides origin to the trapezius sternocleidomastoid and splenius capitis muscles. Its medial part gives origin to the highest fibres of the Trapezius and its lateral part to the Occipital belly of the Occipito-frontalis below which are insertions of sternocleidomastoid and Splentus capilis.

Forms the back and sticks out. The medial nuchal line which is also called external occipital crest begins at the external occipital protuberance and runs down to the foramen magnum. How do you palpate the external occipital protuberance.

Lateral third of clavicle acromion spine of scapula Action. The external occipital protuberance is a prominence around the center of the parietal surface of the squama that diverges significantly in its vividness and protrusion and functions as the connection of the ligamentum nuchaeThe superior nuchal lines spread laterally toward the temporal bone on either side of the protuberance. Superior nuchal line external occipital protuberance nuchal ligament spinout processes C7-T12 Insertion.

Measurements of the tubercle were taken by vernier calipers and possible causes and clinical implications were. Its the bump between the superior and inferior nuchal lines. Lateral end of the superior nuchal line mastoid process Cervicus.

During the examination of skulls in the osteology laboratory of the Department of Anatomy CSM Medical University Lucknow UP India a skull was detected having exostosis projecting from the external occipital protuberance along with prominent superior nuchal lines appearing as ridges. Superior nuchal line. The nerve emerges on this line in association with the occipital artery and thus this artery is the most reliable anatomical landmark 2 3.

Eye Brows Superior Nuchal Lines And External Occipital Protuberance Superior Temporal Lines Temple Temple Temple Sca Scalps Eyebrows Brows

Geography Of The Skull Skull Anatomy Anatomy Bones Skull

Pin By Anja On Punkty Medical Anatomy Massage Images Massage Therapy

Cranium Bones Mnemonics Skeleton Anatomy Skull Anatomy Bones Of The Head

The Occipital Bone Human Anatomy And Physiology Medical Anatomy Physiology

Function Of Mastoid Process Koibana Info Anatomy Interactive Anatomy Occipital

Occipital Bone By Asklepios Medical Atlas Occipital Skull Anatomy Bones

Scalp The Scalp Refers To The Layers Of Skin And Subcutaneous Tissue That Cover The Bones Of Cranial Va Em 2021 Anatomia Cabeca E Pescoco Cabeca E Pescoco Corpo Humano

Jugular Foramen Health Pictures Skull Anatomy Anatomy Bones Human Anatomy And Physiology

Superficial Temporal Artery Occipital Artery Posterior Auricular Artery And Maxillary Artery Anatom Anatomia Anatomia Y Fisiologia Humana Anatomia Y Fisiologia

Pub Quiz Reference List Of Bones In The Human Skull Anatomy And Physiology Dental Human Skull

Occipital Bone Human Anatomy Organs Anatomy Organs Anatomy And Physiology Textbook Anatomy

Trapezius Muscle Anatomy Occipital Head And Neck

Quelle Prometheus Lernatlas Anatomie Anatomia Craneo Anatomia Anatomia Medica

Base Of The Skull Frontal Bone Ethmoid Sphenoid Petrous Portion Of Temporal Bone Occipit Human Skeleton Anatomy Human Anatomy And Physiology Brain Anatomy

Parietal Bone

Pin On Anatomy

The Bones Of The Cranium Skull Anatomical Construction Of Bones Of The Human Head Parietal Bone Occipital Bone Temporal Bo Skull Anatomy Anatomy Occipital

Axial Skeleton Posterior Aspect Of Skull External Occipital Protuberance Axial Skeleton Anatomy And Physiology Anatomy

Lokasi:

Berbagi :