Pronunciation: [spˈa͡ɪnə͡l kənˈal] (IPA) 
The spinal canal is a vital part of the human anatomy that houses the spinal cord. This phrase is spelled with the IPA phonetic transcription of /ˈspaɪ.nəl kəˈnæl/. The "s" in "spinal" is pronounced with a soft "s" while the "a" and "i" vowels are long. The "a" in "canal" is pronounced with a short "a" sound while the "i" is long. The stress in the word is on the "ca" syllable, so the "a" in "canal" receives the emphasis.
The spinal canal is an anatomical structure that can be found within the vertebral column or backbone. It is a long, narrow passageway that encompasses and protects the spinal cord, as well as the surrounding nerve roots, blood vessels, and connective tissues. The spinal canal runs vertically through the spinal column, extending from the base of the skull all the way down to the sacrum.
The primary function of the spinal canal is to provide support and protection to the delicate spinal cord, which is a crucial part of the central nervous system. It acts as a bony enclosure that shields the spinal cord from potential damage and trauma, preventing injuries that may lead to potential paralysis or loss of sensation.
The spinal canal consists of a series of vertebral bones known as vertebrae, which are stacked on top of each other. These vertebrae form a hollow space, forming the canal itself. The canal is lined with a layer of protective membranes called meninges, which surround and cushion the spinal cord, providing an additional layer of protection.
The spinal canal also plays a vital role in facilitating the passage of nerves and blood vessels that branch out from the spinal cord to different parts of the body. These structures travel through openings in the vertebral bones called intervertebral foramina, which are located along the sides of the spinal canal. This allows for the transmission of nerve impulses and blood flow to and from various parts of the body, ultimately enabling proper sensory and motor functions.
The canal formed by the vertebral arches, in which is the s. cord.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "spinal" comes from the Latin term "spina", which means "thorn" or "backbone". The term "canal" originates from the Latin word "canalis", meaning "pipe" or "groove".
Therefore, the etymology of the word "spinal canal" can be traced back to the combination of these Latin roots: "spina" referring to the backbone and "canalis" indicating a channel or groove. The term "spinal canal" refers to the bony tunnel formed by the vertebral column or backbone that houses and protects the spinal cord.
