Best answer: What is the inferior portion of the spinal cord?

Species Human
Cervical 8
Thoracic 12
Lumbar 5
Sacral 5

What is the inferior part of the spinal cord?

At its inferior end, the spinal cord tapers to a point known as the conus medullaris and gives rise to many large nerve fibers known as the cauda equina. The cauda equina descends through the vertebral canal from the conus medullaris to the coccyx.

What is the most inferior portion of the spinal cord?

Anatomy & Physiology, Skeletal System, Vertebral Column and Hyoid Bone

A B
Coccygeal Region The most inferior part of the vertebral column.
Lumbar Region (L1 – L5) Region of the vertebral column formed by the five lumbar vertebrae (L1 – L5)

Where is the inferior end of spinal cord?

The tapering inferior end of the spinal cord is called the conus medullaris and is the official “end” of the spinal cord proper (usually at the level of the first lumbar vertebra). Inferior to the conus medullaris, groups of axons called the cauda equina project from the spinal cord.

What is the most inferior portion of the vertebral column?

The two most inferior units of the vertebral column are made up of vertebral segments that have fused together to form a single mass: the sacrum, which articulates with the os coxae to form the pelvis; and the coccyx, which consists of four coccygeal vertebrae which are fused together to form the vestigial human …

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What is the spinal cord made of?

The spinal cord lies inside the spinal column, which is made up of 33 bones called vertebrae. Five vertebrae are fused together to form the sacrum (part of the pelvis), and four small vertebrae are fused together to form the coccyx (tailbone).

What are the 3 main parts of the spinal cord?

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.

What protects the spinal cord?

The spinal cord is protected by bones, discs, ligaments, and muscles. The spine is made of 33 bones called vertebrae. The spinal cord passes through a hole in the center (called the spinal canal) of each vertebra. Between the vertebrae there are discs that act as cushions, or shock absorbers for the spine.

What part of the spine controls the heart?

Thoracic (mid back) – the main function of the thoracic spine is to hold the rib cage and protect the heart and lungs. The twelve thoracic vertebrae are numbered T1 to T12.

Why does the spinal cord hurt?

Conditions commonly linked to back pain include: Muscle or ligament strain. Repeated heavy lifting or a sudden awkward movement can strain back muscles and spinal ligaments. If you’re in poor physical condition, constant strain on your back can cause painful muscle spasms.

What are the 5 parts of the spinal column?

The spine is composed of 33 bones, called vertebrae, divided into five sections: the cervical, thoracic, and lumbar spine sections, and the sacrum and coccyx bones. The cervical section of the spine is made up of the top seven vertebrae in the spine, C1 to C7, and is connected to the base of the skull.

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