Your axial skeleton is made up of the 80 bones within the central core of your body. This includes bones in your head, neck, back and chest. Your axial skeleton protects and cushions your brain, spinal cord and organs. Many different health conditions can affect your axial skeleton, so it’s important to keep it healthy and strong.

In anatomy, the axis (from Latin axis, "axle") is the second cervical vertebra (C2) of the spine, immediately inferior to the atlas, upon which the head rests. The spinal cord passes through the axis. The defining feature of the axis is its strong bony protrusion known as the dens, which rises from the superior aspect of the bone.

In humans, the axial skeleton serves to protect the brain, spinal cord, heart, and lungs. It also serves as the attachment site for muscles that move the head, neck, and back, and for muscles that act across the shoulder and hip joints to move their corresponding limbs.

2023年10月30日 · The axis is the second vertebra of the vertebral column, located in the superior portion of the cervical region of the spine. It articulates superiorly with the atlas, and inferiorly with the third cervical vertebra. The axis can be divided into anterior and posterior components.

2022年12月7日 · The axis is 1 of the only 2 vertebrae with a unique name and purpose. It is the 2nd bone out of the 7 in the uppermost section of the spinal column, the cervical vertebra. It is also referred to as the C2 vertebra or epistropheus (rarely).

2025年1月20日 · Axial skeleton, the part of the bony structure of the body that consists of the bones of the skull, the vertebral column, and the rib cage. The axial skeleton serves primarily to support and protect the heart, lungs, and central nervous system, which is …

2024年10月3日 · These are the axial skeleton and the appendicular skeleton. Each plays a critical role in providing support, structure, and facilitating movement in vertebrates. Axial Skeleton: The axial skeleton is situated along the body’s anteroposterior axis, meaning it runs from the head to the tail, serving as the central framework for the organism.

The axial skeleton of the adult consists of 80 bones, including the skull, the vertebral column, and the thoracic cage. The axial skeleton forms the longitudinal axis of the body, the center or midline of the body around which the limbs rotate, much as the earth spins around its center axis.

2025年1月21日 · The axial skeleton is a major division of the human skeletal system, consisting of 80 bones. It includes the bones of the head, neck, and trunk. Specifically, the axial skeleton comprises the skull, vertebral column, ribs, and sternum. This central framework supports and protects the brain, spinal cord, and vital organs within the thorax. The

The Axis (C2 vertebra) also known as epistropheus forms the pivot upon which the first cervical vertebra (the Atlas), which carries the head, rotates. The axis is composed of a vertebral body, heavy pedicles, laminae, and transverse processes, …