How to Pronounce Semispinalis Thoracis

Say it like this: sem-ee-spy-NAL-is tho-RAY-sis. The stress falls on the third syllable of the first word (NAL) and the second syllable of the second word (RAY). It helps to say each part separately first, then blend them together smoothly.

A common mistake is stressing the first syllable and saying SEE-mi-spinalis, but the correct way puts the emphasis on NAL: sem-ee-spy-NAL-is. Pay attention to that third syllable to sound like you know the word.

Break it like this: sem-i-spi-NAL-is tho-RAY-sis. The first word has five syllables, and the second word has three syllables, so you're saying eight syllables total.

Semi- comes from Latin and means 'half,' spinalis comes from Latin spina meaning 'spine,' and thoracis refers to the thorax or chest area. So the name basically means 'half-spine of the chest region.'

It's the name of a deep muscle in your upper back that runs along your spine. The muscle helps your spine bend backward and twist to the opposite side.

Yes! There's also semispinalis cervicis (in the neck), semispinalis capitis (in the head and neck), and erector spinae (also along the spine). All of these names include 'spinal' or 'spinalis' because they all relate to the spine.

You might hear something like: 'The semispinalis thoracis is one of the muscles that helps you stand up straight and twist your upper body.' It's a word you'd use when talking or learning about back muscles.

Thoracis is the Latin word for 'of the thorax,' which is your chest and upper back area. The word tells you exactly where in the body this muscle is located—in the thoracic region of your spine.