Where does the occipital bone articulate with the atlas?

On the superior surface of the atlas bone are a pair of concave facets. The facets articulate with rounded condyles on the underside of the skull’s occipital bone. This junction allows the head to nod up and down.

What are the 4 parts of the occipital bone?

either side of middle line: longus capitis, and rectus capitis anterior. anterior atlanto-occipital membrane. … The occipital bone is composed of four parts:

What are the articulations of the skull called?

The coronal suture is the articulation point of the frontal bone with the two parietal bones. The sagittal suture is the articulation point between the two parietal bones. The squamous sutures are the articulation points between the each temporal bone and the parietal bone superior to it.

Where does the occipital bone articulate with the first cervical vertebra?

occipital condyles The occipital condyles are where the occipital bone articulates with the first cervical vertebra.

Does the Dens articulate with the occipital bone?

The dens articulates with the occipital bone. Costal cartilages join most ribs to the sternum. … Bones of the skull are separated by immobile joints called sutures.

What does the Dens articulate with?

One of the most prominent features of the axis bone is a superior, tooth-like projection called the odontoid process (or dens). articulates with the anterior arch of the atlas bone, where they form a pivot joint.

What does the occipital bone articulate with?

1 Anatomy. The occipital bone is set at the rear of the cranium and articulates with the temporals, sphenoid, parietals, and the uppermost vertebra, the atlas.

Is an articulation between the parietal bones and the occipital bone?

Sagittal suture: the suture between the two parietal bones. 3. Lambdoid suture: the suture between the two parietal bones and the occipital bone.

What type of bone is phalanges?

Long bones Long bones are mostly located in the appendicular skeleton and include bones in the lower limbs (the tibia, fibula, femur, metatarsals, and phalanges) and bones in the upper limbs (the humerus, radius, ulna, metacarpals, and phalanges).

Where are the palatine bones?

The Adult Palatine. The palatine bones contribute to the posterior part of the roof of the mouth and floor and lateral walls of the nose, the medial wall of the maxillary sinuses and the orbital floors. Each bone (Fig. 5-66) consists of horizontal and perpendicular plates (laminae) set at right angles to each other.

What are the bone markings of the skull?

There are numerous markings on the maxilla, palatine, zygomatic, and sphenoid bones of the skull.

What bone forms the back and base of the cranium?

occipital bone The occipital bone forms the back of the skull. In adults, all but one of the 22 bones of the skull are fused together by immovable joints called sutures.

Which cervical vertebra articulates with the skull?

atlas atlas: the first cervical vertebra (C1), lying directly under the skull, through which the head articulates with the neck.

Which feature on the occipital bone articulates with cervical 1?

occipital condyles The condylar parts are located lateral to the foramen magnum. They comprise two kidney-shaped prominences (occipital condyles) that articulate with the first cervical vertebra (atlanto-occipital joint).

What two bones form the articulation that allows rotation of the head?

The atlas and the occipital bone form the atlanto-occipital joint, which allows neck flexion. When you nod your head as if to say yes, that is neck flexion. The atlas and axis form the atlanto-axial joint, which allows head rotation.

What is occipital articulation?

The atlanto-occipital articulation (also known as the C0-C1 joint/articulation) is comprised of a pair of condyloid synovial joints that connect the occipital bone (C0) to the first cervical vertebra (atlas/C1).

Which bone articulates with the dens quizlet?

The dens articulates with the occipital bone. Which region of the vertebral column is located superior to the thoracic region and which region is inferior to the thoracic region, respectively?

What bone articulates with the ethmoid bone anteriorly and the occipital bone posteriorly?

sphenoid Body of sphenoid Articulates with ethmoid bone anteriorly and basilar part of occipital bone posteriorly. It shows: Jugum sphenoidale.

What are two articulations to the axis?

The axis is composed of a vertebral body, heavy pedicles, laminae, and transverse processes, which serve as attachment points for muscles. The axis articulates with the atlas via its superior articular facets, which are convex and face upward and outward.

Are dens posterior?

In anatomy, the axis (from Latin axis, axle) or epistropheus, is the second cervical vertebra (C2) of the spine, immediately posterior to the atlas, upon which the head rests. The axis’ defining feature is its strong odontoid process (bony protrusion) known as the dens, which rises dorsally from the rest of the bone.

What does not articulate with any other bone?

Famously, the hyoid bone is the only bone in humans that does not articulate with any other bone, but only has muscular, ligamentous, and cartilaginous attachments.

What does articulate mean in anatomy?

An articulation, or joint, is where two bones come together. In terms of the amount of movement they allow, there are three types of joints: immovable, slightly movable and freely movable.

Which foramen is formed as a result of bone articulation?

The foramen magnum (Latin: great hole) is a large, oval-shaped opening in the occipital bone of the skull. It is one of the several oval or circular openings (foramina) in the base of the skull. …

Foramen magnum
FMA 75306
Anatomical terms of bone

Which bone articulates with the occipital bone of the skull quizlet?

Atlas: The bone that articulates with the occipital condyles. 4. Thoracic vertebrae: These bones have articular facets for the ribs.

What bones articulate with the parietal bone?

The parietal bone articulates with five other bones:

Where is the cranium?

skull The craniumthe part of the skull that encloses the brainis sometimes called the braincase, but its intimate relation to the sense organs for sight, sound, smell, and taste and to other structures makes such a designation somewhat misleading.

Which articulation joins the frontal bone with the parietal bone?

coronal suture The frontal bone and the two parietal bones articulate via the coronal suture; the two parietal bones articulate in the midline of the head via the sagittal suture. These two sutures intersect perpendicularly at the bony landmark bregma (Greek: top of the head) in the superior middle portion of the head.

What is the main function of the phalanges?

The phalanges of the fingers help us manipulate our environment while the phalanges of the foot help us balance, walk, and run.

Is the phalanges axial or appendicular?

The pelvis, femur, fibula, tibia and all of the foot bones as well as the scapula, clavicle, humerus, radius, ulna and all of the hand bones are classified as appendicular.

What are the names of the phalanges?

Going from lateral to medial, they are named thumb (digit 1), index finger (digit 2), middle finger (digit 3), ring finger (digit 4) and little finger (digit 5). This article will describe the anatomy and functions of the phalanges of hand.