Side view of head, showing surface relations of bones. (Superior and median lines visible at bottom right.)
Details
Identifiers
Latin
linea nuchae
Anatomical terms of bone
[edit on Wikidata]
The nuchal lines are four curved lines on the external surface of the occipital bone:
The upper, often faintly marked, is named the highest nuchal line, but is sometimes referred to as the Mempin line or linea suprema, and it attaches to the epicranial aponeurosis.
Below the highest nuchal line is the superior nuchal line. To it is attached, the splenius capitis muscle, the trapezius muscle,[1] and the occipitalis.[2]
From the external occipital protuberance a ridge or crest, the external occipital crest also called the median nuchal line, often faintly marked, descends to the foramen magnum, and affords attachment to the nuchal ligament.
Running from the middle of this line is the inferior nuchal line. Attached are the obliquus capitis superior muscle, rectus capitis posterior major muscle, and rectus capitis posterior minor muscle.
^Rea, Paul (2016-01-01), Rea, Paul (ed.), "Chapter 3 - Neck", Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Head and Neck, Academic Press, pp. 131–183, doi:10.1016/b978-0-12-803633-4.00003-x, ISBN 978-0-12-803633-4, retrieved 2020-11-02
^Casteleyn, Christophe; Bakker, Jaco (2019-01-01), Marini, Robert; Wachtman, Lynn; Tardif, Suzette; Mansfield, Keith (eds.), "Chapter 2 - The Anatomy of the Common Marmoset", The Common Marmoset in Captivity and Biomedical Research, American College of Laboratory Animal Medicine, Academic Press, pp. 17–41, doi:10.1016/b978-0-12-811829-0.00002-9, ISBN 978-0-12-811829-0, S2CID 92754272, retrieved 2020-11-02
The nuchallines are four curved lines on the external surface of the occipital bone: The upper, often faintly marked, is named the highest nuchal line...
The nuchal ligament is a ligament at the back of the neck that is continuous with the supraspinous ligament. The nuchal ligament extends from the external...
as the nuchallines which give attachment to various ligaments and muscles. They are named as the highest, superior and inferior nuchallines. The inferior...
The lower is termed the superior nuchal line. That area of the squamous part, which lies above the highest nuchallines is named the occipital plane (planum...
aponeurosis originates from the external occipital protuberance and highest nuchallines of the occipital bone. It merges with the occipitofrontalis muscle. In...
which passes upward, and is inserted between the superior and inferior nuchallines of the occipital bone. It lies deep to the trapezius muscle and can be...
Hatzegopteryx was likely strongly muscled. On the occipital bones, the nuchallines, which serve as muscular attachments, are very well-developed and bear...
auditory bullae, a flatter cranium with a larger sagittal crest, and larger nuchallines. In 2014, a study was conducted on pre-20th century dingo specimens that...
temporal line, the eye sockets, the supraorbital ridge, as well as the nuchallines, and the mastoid process. In general, male skulls tend to be larger and...
strong sagittal crest protruding above the occipital face. Forward of the nuchallines is the auditory hole, separated from a strong paramastoid (or near the...
The crest joins both the external occipital protuberance and upper nuchallines at right angles. The zygomatic arch is thin and very prominent that it...
trapezius and splenius capitis) attach to the nuchal ligament rather than directly to the vertebrae; the nuchal ligament itself attaching to the spinous processes...
time to heal. Ligaments of the upper body include: Nuchal and supraspinous ligaments: the nuchal ligament is composed of strong elastic tissue originating...
having a CVS can include: Abnormal first trimester screen results Increased nuchal translucency or other abnormal ultrasound findings Family history of a chromosomal...
occipitalis head, occipitofrontalis, back of skull (left/right) superior nuchal line of occipital bone, mastoid part of temporal bone epicranial aponeurosis...
which could have reduced the skull's thickness, and the absence of the nuchal crest. (Charlier et al. 2018). This prompted the vice president of the Russian...
places. The scutes are grouped in two fairly distinct areas known as the nuchal and the dorsal shields. The former lies just back of the head, in the region...
than the interparietal, which entirely separates the parietals; a pair of nuchals, 4 labials anterior to the subocular, which is large and not narrower below...
weeks of gestation include a small or no nasal bone, large ventricles, nuchal fold thickness, and an abnormal right subclavian artery, among others. The...
longer than the frontoparietals and interparietal together; a pair of nuchals, rarely absent ; an enlarged temporal scale borders the outer margin of...
adults. The giraffe's head and neck are held up by large muscles and a nuchal ligament, which are anchored by long thoracic vertebrae spines, giving them...
notch Jugular process External occipital protuberance Superior nuchal line Inferior nuchal line Internal occipital protuberance Sphenoid Body Sella turcica...
The "marginal scutes" run along the outer sides of the shell, and the "nuchal scutes" are found in the area directly behind the turtle's head. Lastly...
Fedden and Sidney Nolan. Victor Vasarely depicted zebras as black and white lines and connected in a jigsaw puzzle fashion. Carel Weight's Escape of the Zebra...
muscles mass. Male skeletons generally have more pronounced brow ridges, nuchal crests, and mastoid processes. Skeletal size and robustness are influenced...
both a wide jaw and mouth. They are characterized by a broad, enlarged nuchal plate paired with four small plates around the upper jaw. They have short...
the deep cervical fascia. Above, the fascia is attached to the superior nuchal line of the occipital bone, to the mastoid process of the temporal bone...
("hairs") per segment. Polychaetes have parapodia that function as limbs, and nuchal organs that are thought to be chemosensors. Most are marine animals, although...
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