What is the definition of opisthion?
The opisthion is the median (midline) point of the posterior margin of the foramen magnum. It is one of the skull landmarks, craniometric points for radiological or anthropological skull measurement.
What is a Basion?
The basion is the median (midline) point of the anterior margin of the foramen magnum. The apical ligament attaches to it. It is one of the skull landmarks, craniometric points for radiological or anthropological skull measurement.
What is the Opisthocranion?
Medical Definition of opisthocranion : the posteriormost point in the midsagittal plane of the occiput.
How do I find my Opisthion index?
Record the opisthocranion-orale distance in the table. To calculate the opisthion index, divide your first measurement by your second measurement. Multiply this number by 100.
What is the Opisthion index of a human?
The opisthion is the rear most point of the foramen magnum. This index indicates the distance of the foramen magnum from the rearmost point of the cranium relative to the total length of the cranium (see Figure 1 in the Student Outline).
What is the meaning of bade farewell?
An example when someone bade farewell is when a friend said goodbye to another. verb. 3. 1. Simple past tense of bid.
What is the Basiocciput?
the wedgelike portion of the occipital bone that lies anterior to the foramen magnum and joins with the body of the sphenoid bone. Synonym(s): basilar process of occipital bone [TA], pars basilaris ossis occipitalis [TA], basal part of occipital bone, basilar apophysis, basiocciput.
What is the Opisthion index of a human skull?
An important index for measuring hominid skulls is the opisthion index. This index indicates the position of the foramen magnum in the base of the cranium. The opisthion index can indicate whether a hominid species was bipedal or not.
What is a low Opisthion index?
An opisthion index value greater than 15 means that the foramen magnum is situated close to the center of the cranium. This position is found in species that stand upright and demonstrates bipedalism. An opisthion index less than 15 means the foramen magnum is situated more in the rear of the cranium.
What evolved first bipedalism or large brains?
Some human traits, like bipedalism, evolved very early, while others, like large brains, did not evolve until relatively recently. Still other traits, like molar size, evolved in one direction only to be pushed back later by changing ecological pressures.
What does bade means in the Bible?
8. 11. The definition of bade is expressed to someone else. An example when someone bade farewell is when a friend said goodbye to another.
What does opisthion mean in medical terms?
Medical Definition of opisthion. : the median point of the posterior border of the foramen magnum.
What is the opisthion and basion?
These include the opisthion (the dorsal border of the foramen magnum), basion (the ventral border of the foramen magnum), clivus, hard palate, atlas, pedicle of axis, and tip of the odontoid process. Foramen magnum stenosis from overgrowth of the opisthion in a child with achondroplasia.
What is the opisthion in achondroplasia?
A retrospective analysis These include the opisthion (the dorsal border of the foramen magnum), basion (the ventral border of the foramen magnum), clivus, hard palate, atlas, pedicle of axis, and tip of the odontoid process. Foramen magnum stenosis from overgrowth of the opisthion in a child with achondroplasia.