What are the 5 regions of the vertebral column how many bones are in each region?

Answer: The adult vertebral column consists of 24 vertebrae, plus the sacrum and coccyx. The vertebrae are subdivided into cervical, thoracic, and lumbar regions. There are seven cervical vertebrae (C1–C7), 12 thoracic vertebrae (T1–T12), and five lumbar vertebrae (L1–L5).

What are the 5 sections of your spine in correct order?

As mentioned above, our vertebrae are numbered and divided into five regions: cervical, thoracic, lumbar, sacrum, and coccyx.

How do you remember the 5 regions of the vertebral column?

You can use a meal-related mnemonic to remember them – imagine a crunchy breakfast at 7 am (7 cervical vertebrae), a tasty lunch at 12 noon (12 thoracic vertebrae), and a light dinner at 5 pm (5 lumbar vertebrae).

What are the 5 kinds of bones that make up the vertebral column?

The mammalian vertebral column consists of five morphologically differentiated groups of vertebrae: cervical, thoracic, lumbar, sacral and coccygeal (caudal) (Fig 3.1). In humans, the vertebral column usually consists of 33 vertebrae, placed in series and connected by ligaments and intervertebral discs.

What are the regions of the vertebral column in descending order?

It is composed of 31 individual bones called vertebrae, and the entire column is divided into 5 sections – cervical, thoracic, lumbar, sacrum and coccyx – in descending order of location. Each section has a different number of vertebrae, interspersed with intervertebral discs.

What are the 5 lumbar vertebrae?

Position of human lumbar vertebrae (shown in red). It consists of 5 bones, from the top down, L1, L2, L3, L4 and L5. The lumbar vertebrae are, in human anatomy, the five vertebrae between the rib cage and the pelvis.

What are the sections of the spine?

The spine itself has three main segments: the cervical spine, the thoracic spine, and the lumbar spine.

What is vertebral column?

(ver-TEE-brul KAH-lum) The bones, muscles, tendons, and other tissues that reach from the base of the skull to the tailbone. The vertebral column encloses the spinal cord and the fluid surrounding the spinal cord. Also called backbone, spinal column, and spine.

What is atlas and axis?

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.

What is the sacral region?

The sacral region (sacrum) is at the bottom of the spine and lies between the fifth segment of the lumbar spine (L5) and the coccyx (tailbone). The sacrum is a triangular-shaped bone and consists of five segments (S1-S5) that are fused together.

What is vertebral formula?

Vertebral formula is a formula indicating the number of vertebrae in each segment of the spinal column. For humans it is C7​, T12​, L5​, S7​, Co4​ which is equal to 33.

How many regions of the vertebral column are there quizlet?

(Vertebrae) . The five major regions of the vertebral column are the cervical region, thoracic region, lumbar region, sacrum, and coccyx.

What are the three regions of the vertebral column?

The vertebrae are divided into three regions: cervical C1–C7 vertebrae, thoracic T1–T12 vertebrae, and lumbar L1–L5 vertebrae. The vertebral column is curved, with two primary curvatures (thoracic and sacrococcygeal curves) and two secondary curvatures (cervical and lumbar curves).

Which region of the vertebral column have the vertebrae fused together?

The upper three regions of the spinal column are termed the cervical, thoracic, and lumbar; they contain individually jointed vertebrae. The two lower regions—the sacrum and coccyx, or tailbone—are formed from fused vertebrae.

What are the 4 main functions of the vertebral column?

The spine has a number of key functions:

Which region of the vertebral column is immediately superior to the lumbar region?

Which region of the vertebral column is immediately inferior to the lumbar region? The sacrum is located below the lumbar region, articulating superiorly with L5 and inferiorly with the coccyx. The shape of the spinous process can be used to help determine if a vertebra is from the lumbar region.

What are the 4 major curves of the vertebrae?

There are four natural curves in the spinal column. The cervical, thoracic, lumbar, and sacral curvature.

Where is the 5th vertebrae?

lumbar The L5 vertebra is located in the spinal column of the lumbar (lower back) region inferior to the L4 vertebra and superior to the sacrum.

Where is vertebrae 4 and 5?

The L4 and L5 are the two lowest vertebrae of the lumbar spine. Together with the intervertebral disc, joints, nerves, and soft tissues, the L4-L5 spinal motion segment provides a variety of functions, including supporting the upper body and allowing trunk motion in multiple directions.

What does the 5th vertebrae control?

Its function is to support the skull, enabling head movements back and forth, and from side to side, as well as protecting the spinal cord.

How many vertebrae are in the spinal column?

The average person is born with 33 individual bones (the vertebrae) that interact and connect with each other through flexible joints called facets. By the time a person becomes an adult most have only 24 vertebrae because some vertebrae at the bottom end of the spine fuse together during normal growth and development.

What are the 3 sections of the spine?

The spine has three normal curves: cervical, thoracic and lumbar. There are seven cervical vertebrae in the neck, 12 thoracic vertebrae in the torso and five lumbar vertebrae in the lower back.

How many vertebrae are in each section of the spine?

Each section is made up of individual bones, called vertebrae. There are 7 cervical vertebrae, 12 thoracic vertebrae, and 5 lumbar vertebrae.

What is vertebral column Class 5?

The mammalian vertebral column consists of five morphologically differentiated groups of vertebrae: cervical, thoracic, lumbar, sacral and coccygeal (caudal) (Fig 3.1). In humans, the vertebral column usually consists of 33 vertebrae, placed in series and connected by ligaments and intervertebral discs.

What is vertebral column Class 6?

The backbone: Backbone or vertebral column is composed of 33 small, ring like vertebrae joined end to end. It forms a hollow bony tube. The main nerve cord passes through it. The Chest bones: 12 pairs of ribs along with backbone make a cone-shaped cage, called rib-cage, which protects the heart.

Which region of the vertebral column is most flexible?

cervical spine The most flexible part is the cervical spine (neck area). The bones that make up the spine also protect the spinal cord, which runs through the spinal canal.

Is atlas C1 or C2?

The upper cervical spine consists of the atlas (C1) and the axis (C2). These first 2 vertebrae are quite different from the rest of the cervical spine (see the image below). The atlas articulates superiorly with the occiput (the atlanto-occipital joint) and inferiorly with the axis (the atlantoaxial joint).

What is C1 C2 in spine?

The C1 and C2 vertebrae are the first two vertebrae at the top of the cervical spine. Together they form the atlantoaxial joint, which is a pivot joint. The C1 sits atop and rotates around C2 below. More of the head’s rotational range of motion comes from C1-C2 than any other cervical joint. 1.

Why is C2 called axis?

C2 is called the “axis” because it enables the head’s rotation around a longitudinal axis with left and right rotation as when shaking the head “no” (Figure 2, C2 – Axis). To accomplish this feat, the axis has a unique feature among the vertebrae: the dens (or odontoid process).