What is a nuchal ligament?

The nuchal ligament extends from the external occipital protuberance to the spinous process of the seventh cervical vertebra (C7). It is covered by layers of cervical fascia and the aponeurosis of the trapezius muscle.

What is the nuchal ligament and what is it for?

Function. It is a tendon-like structure that has developed independently in humans and other animals well adapted for running. In some four-legged animals, particularly ungulates, the nuchal ligament serves to sustain the weight of the head.

Where does the nuchal ligament insertion?

The nuchal ligament is a bilobed structure, fans at its insertion on the occiput, and is surrounded by muscle, the semispinalis to the left and right and the rectus capitis ventrally.

Which animals do not have a nuchal ligament?

The nuchal ligament, for example, which connects the base of the human skull to the base of the neck, stands out. “It’s an elastic band that has repeatedly evolved in animals that run. Apes don’t have it,” says Bramble.

What is the function of the nuchal ligament in dogs?

In animals. This ligament is analogous in function (but different in exact structural detail) to the nuchal ligament found in ungulates. This ligament allows dogs to carry their heads while running long distances, such as while following scent trails with their nose to the ground, without expending much energy.

Where is the nuchal ligament located on the horse?

The nuchal ligament is a bilobed structure, fans at its insertion on the occiput, and is surrounded by muscle, the semispinalis to the left and right and the rectus capitis ventrally. From: Diagnosis and Management of Lameness in the Horse (Second Edition), 2011.

Why is the catlacks nuchal ligament important to ungulates?

The catlacks nuchal and supraspinous ligaments, perhaps this contributes to its greater flexibility compared to the dog. As you will see, the elastic nuchal ligament is best developed in grazing ungulates who have more need for a passive head-elevation aid. Spinal nervesinnervate muscles and skin via dorsal and ventral regional branches.

How is the nuchal ligament surrounded by muscle?

The nuchal ligament is a bilobed structure, fans at its insertion on the occiput, and is surrounded by muscle, the semispinalis to the left and right and the rectus capitis ventrally. New bone formation at the insertion on the occiput may be an incidental finding. Examination of 302 Warmbloods from 1 to 22 years of age revealed new bone in 85%.