Introduction to Axis Bone Anatomy:
In anatomy, the second cervical vertebra (C2) of the spine is named the axis (from Latin axis, “axle”) or epistropheus. By the atlanto-axial joint, it forms the pivot upon which the first cervical vertebra (the atlas), which carries the head, rotates.
Beside above, what is special about the second cervical vertebra called the Axis? Vertebra, second cervical: The second cervical vertebra is called the axis. It is so-named because the uppermost cervical vertebra (called the atlas) rotates about the odontoid process of the second cervical vertebra. The joint between the axis and atlas is a pivot type of joint. It allows the head turn.
Simply so, what is the 1st cervical vertebra called?
In anatomy, the atlas (C1) is the most superior (first) cervical vertebra of the spine and is located in the neck . It is named for the Atlas of Greek mythology, because it supports the globe of the head which is the skull. The atlanto-occipital joint allows the head to nod up and down on the vertebral column.
What is the Atlas and Axis vertebrae?
The atlas and axis vertebrae are the two most superior bones in the vertebral column, and they are part of the seven cervical vertebrae. The atlas is the top-most bone, sitting just below the skull; it is followed by the axis. Together, they support the skull, facilitate neck movement, and protect the spinal cord.
Which is the main feature of axis vertebra?
The axis is the second cervical vertebra, commonly called C2. It is an atypical cervical vertebra with unique features and important relations that make it easily recognisable. Its most prominent feature is the odontoid process (or dens), which is embryologically the body of the atlas (C1) 1,2.
What is the function of the Axis?
The axis is the second of seven bones in the cervical spine. The axis, also known as the C2 bone, creates a pivot that allows the C1, or atlas, to rotate. This action gives the head and neck a greater range of motion from side to side.
What type of bone is Axis?
Introduction to Axis Bone Anatomy: Inferior to the atlas bone (C1) is the second cervical vertebra (C2), which is also referred to as the axis bone (axis, vertebra cervicalis II). One of the most prominent features of the axis bone is a superior, tooth-like projection called the odontoid process (or dens).
Why is c2 called axis?
C2 (cervical vertebra): C2 is the symbol for the second cervical vertebra, which is also called the axis. It is so-named because the uppermost cervical vertebra (called the atlas) rotates about the odontoid process of the second cervical vertebra. The Latin word “axis” means axle or pole.
Which bone is called Yes bone?
✌?✌? hey, ➡?Atlas bone is also called Yes bone because it is responsible for the yes movement that we can do..
What does your c2 control?
What is a C2 Vertebra? The C2 vertebra is the axis which the C1 vertebra pivots around and lets us move our skulls from side to side in a horizontal motion. Like the C1 vertebra, a C2 vertebra has a greater degree of motion than other vertebrae that are lower on the spinal column.
What is the difference between Atlas and Axis?
The main difference between atlas and axis vertebrae is that atlas is the first cervical vertebra, which supports the skull whereas axis is the second cervical vertebra, which forms the pivot upon the atlas. Furthermore, atlas help to hold the head upright while axis allows the head to turn side to side.
What is the top vertebrae called?
The spine is made up of 24 segments called vertebrae. These bones are stacked on top of one another. There are seven vertebrae in the neck called cervical vertebrae. These are often referred to as C1 through C7 (top to bottom). The skull sits atop C1.
Which type of bone is c7?
C7 (7th Cervical Vertebra) The 7th cervical (C7) vertebra is the largest and most inferior vertebra in the neck region. Unlike the other cervical vertebrae, the C7 has a large spinous process that protrudes posteriorly toward the skin at the back of the neck.
What is another name for c1?
C1-C7 (cervical vertebrae): C1 through C7 are the symbols for the cervical (neck) vertebrae, the upper 7 vertebrae in the spinal column (the vertebral column). C1 is called the atlas. C2 is called the axis because the atlas rotates about the odontoid process of C2.
What does c6 7 control?
The C7 myotome is a group of muscles controlled by the C7 nerve. These muscles include those involved in straightening the elbow, lifting the wrist, elongating the fingers to an outstretched hand, and the triceps muscle in the upper arm.
What does c1 and c2 control?
C1, C2, and C3 (the first three cervical nerves) help control the head and neck, including movements forward, backward, and to the sides. 1. The C2 dermatome handles sensation for the upper part of the head, and the C3 dermatome covers the side of the face and back of the head.
How many bones are in the human body?