What is the most inferior portion of the spinal cord?

What is the most inferior portion of the spinal cord called?

It is a long tube about 18 inches (45 cm) in length and around half an inch (1 cm) in diameter at its widest point. 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.

Is the most inferior area 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)

What are the parts of the spinal cord?

The spinal cord is divided into four different regions: the cervical, thoracic, lumbar and sacral regions (Figure 3.1). The different cord regions can be visually distinguished from one another.

What happens if your spinal cord hurts?

Emergency signs and symptoms of a spinal cord injury after an accident include: Extreme back pain or pressure in your neck, head or back. Weakness, incoordination or paralysis in any part of your body. Numbness, tingling or loss of sensation in your hands, fingers, feet or toes.

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What is the lower end of the spinal cord called?

The bottom of the spine is called the sacrum. It is made up of several vertebral bodies usually fused together as one. The remaining small bones or ossicles below the sacrum are also fused together and called the tailbone or coccyx.

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.

What part of your spine controls your legs?

The nerves of the cervical spine go to the upper chest and arms. The nerves in your thoracic spine go to your chest and abdomen. The nerves of the lumbar spine then reach to your legs, bowel, and bladder. These nerves coordinate and control all the body’s organs and parts, and let you control your muscles.

What are the three layers of the spinal cord?

The brain and spinal cord are covered by three layers of meninges, or protective coverings: the dura mater, the arachnoid mater, and the pia mater. Cerebrospinal fluid surrounds the brain, cushioning it and providing shock absorption to prevent damage.