Exempel på alar

• In front, the greater alar cartilages are separated by a notch which corresponds with the apex of the nose.

• The rhombencephalon folds posteriorly, which causes its alar plate to flare and form the fourth ventricle of the brain.

• The ventral (front) part of the neural tube is called the basal plate; the dorsal (rear) part is called the alar plate.

• Alar municipality once had up to 30 factories and more than 2000 people dedicated to this activity.

• The alar ligament is also known as the check ligament of the odontoid.

• Laterally of this are a pair of alar folds.

• The nostrils have an outer ring made of cartilage (the alar cartilage), which serves to hold them open during inhalation.

• Alar ligaments: stress or trauma can stretch the weaker alar ligaments, causing an increase in range of motion of approximately 30%.

• The ventral part of the neural tube is called the basal plate; the dorsal part is called the alar plate.

• To their margins are attached the capsules of the atlantoccipital articulations, and on the medial side of each is a rough impression or tubercle for the alar ligament.

• Apart from the transmission of the medulla oblongata and its membranes, the foramen magnum transmits the vertebral arteries, the anterior and posterior spinal arteries, the membrana tectoria and alar ligaments.

• Where the lateral cartilage meets the greater alar cartilage, the lateral cartilage often curls up, to join with an inward curl of the greater alar cartilage.

• The netrins act as chemoattractants to decussation of pain and temperature sensory neurons in the alar plate across the anterior white commissure, where they then ascend towards the thalamus.

• When observed from below (worms-eye view), the alar base configures an isosceles triangle, with its apex at the infra-tip lobule, immediately beneath the tip of the nose.

• To their margins are attached the capsules of the atlanto-occipital joints, and on the medial side of each is a rough impression or tubercle for the alar ligament.