The external occipital crest is part of the external surface of the squamous part of the occipital bone. It is a ridge along the midline, beginning at the external occipital protuberance and descending to the foramen magnum, that gives attachment to the nuchal ligament. It is also called the median nuchal line..
Also, where is the external occipital protuberance?
Inferior view. The external occipital protuberance is a raised area on the midline of the occipital bone where the posterior wall meets the base of the skull. It is medial to the two superior nuchal lines. It is at the superior extent of the ligamentum nuchae that connects the cervical vertebrae to the skull.
Also, what muscles attach to the external occipital protuberance? To it is attached, the splenius capitis muscle, the trapezius muscle and the occipitalis. 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.
Consequently, does everyone have an external occipital protuberance?
Yes, EVERYONE has an inion. But there is a difference between those with an ENHANCED inion or occipital protuberance and those who do not have this. IF your inion is enhanced, you can hook your fingers UNDER it. IF the inion is NOT enhanced there is NOTHING for the thumb to hook on to.
What is an Inion bump?
Finding a bump on the head is very common. Some lumps or bumps occur on the skin, under the skin, or on the bone. In addition, each human skull has a natural bump on the back of the head. This bump, called an inion, marks the bottom of the skull where it attaches to the neck muscle.
Related Question Answers
Can you feel external occipital protuberance?
The bony skull bump — known as an external occipital protuberance — is sometimes so large, you can feel it by pressing your fingers on the base of your skull.Why does my occipital bone hurt?
Occipital neuralgia is most commonly caused by pinched nerves in the root of a person's neck. Sometimes this is caused by muscles that are too tight in a person's neck. In some cases, it can be caused by a head or neck injury. Chronic neck tension is another common cause.Is occipital protuberance normal?
External occipital protuberance is normal anatomical entity, rarely it may show hyperostosis and may get prominent and causing pain and examination reveals presence of tender bony swelling. However, such occurrence is extremely uncommon.Where is the occipital condyle?
The occipital condyle is a rounded projection that is present on the posterior (rear) of the dinosaur's skull. It articulates with the first cervical (neck) vertebra and, in effect, attaches the head of the dinosaur to its body.What does the occipital protuberance do?
The occipital bone is the trapezoidal-shaped bone found at the lower-back area of the cranium. The occipital is cupped like a saucer in order to house the back part of the brain. It is one of seven bones that fuse together to form the skull and is directly next to five of the cranium bones.How many occipital condyles do humans have?
occipital condyle A single or paired bony knob that protrudes from the occipital bone of the skull and articulates with the first cervical vertebra (the atlas). In humans there is a pair of occipital condyles, one on each side of the foramen magnum.Do humans have an occipital bun?
An occipital bun is a prominent bulge or projection of the occipital bone at the back of the skull. It is important in scientific descriptions of classic Neanderthal crania. There are still some human populations which often exhibit occipital buns.Where is the Inion on your head?
Near the middle of the squamous part of occipital bone is the external occipital protuberance, the highest point of which is referred to as the inion. The inion is the most prominent projection of the protuberance which is located at the posterioinferior (lower rear) part of the human skull.Why is my skull so bumpy?
While it's common for the shape of people's skulls to vary, a new dent or irregularity in your skull can occasionally indicate a serious health condition. Dents in your skull can be caused by trauma, cancer, bone diseases, and other conditions.Why is there a bump on the back of my head?
A bump on the back of the head has many possible causes, including injuries, cysts, fatty growths, inflamed hair follicles, and bone spurs. Bumps on this part of the body can be hard or soft, and they can vary in size. Injuries are a common cause of bumps and lumps on the back of the head.Can a brain tumor change the shape of your skull?
A brain tumor is a collection, or mass, of abnormal cells in your brain. Your skull, which encloses your brain, is very rigid. Brain tumors can be cancerous (malignant) or noncancerous (benign). When benign or malignant tumors grow, they can cause the pressure inside your skull to increase.What causes bone spurs on Skull?
New research in biomechanics suggests that young people are developing hornlike spikes at the back of their skulls — bone spurs caused by the forward tilt of the head, which shifts weight from the spine to the muscles at the back of the head, causing bone growth in the connecting tendons and ligaments.What is the bone on the back of my head?
The occipital bone is a bone that covers the back of your head; an area called the occiput. The occipital bone is the only bone in your head that connects with your cervical spine (neck). Namely, it is what the spinal cord passes through to enter the skull.Where are occipital lymph nodes?
The occipital lymph nodes, one to three in number, are located on the back of the head close to the margin of the trapezius and resting on the insertion of the semispinalis capitis. Their afferent vessels drain the occipital region of the scalp, while their efferents pass to the superior deep cervical glands.What is extra bone growth called?
An osteochondroma is a benign (noncancerous) tumor that develops during childhood or adolescence. It is an abnormal growth that forms on the surface of a bone near the growth plate. Bone growth occurs from the growth plate, and when a child is fully grown, the growth plates harden into solid bone.Do dogs have a sagittal crest?
A sagittal crest tends to be present on the skulls of adult animals that rely on powerful biting and clenching of their teeth, usually as a part of their hunting strategy. Among mammals, dogs, cats, lions, and many other carnivores have sagittal crests, as do some leaf eaters, including tapirs and some apes.What are the two bumps on the back of your head called?
Occipital lymph nodes are those found on the back of your head, near the base of your skull. Read on to learn about the potential causes of swelling in these nodes.What does the occipital bone protect?
Structure and Function. The occipital bone is a very complex bone that serves primarily to protect the cerebellum and the occipital lobes of the cerebrum and to provide attachment to several muscles and ligaments described below. It is trapezoidal and shallowly curved on itself.What type of bone is the occipital bone?
Occipital Bone. The occipital bone is an anteriorly concave bone that forms the base of the cranium. The occipital condyles are paired kidney-shaped structures that form the base of the occipital bone and are the structural bases for the articulation of the skull with the cervical spine. 
