Podcast
Questions and Answers
What is the origin of Semispinalis Thoracis and Cervicis?
What is the origin of Semispinalis Thoracis and Cervicis?
- Transverse processes of thoracic and cervical vertebrae (correct)
- Sacrum, ilium and transverse processes of T1-T12
- Transverse processes of C7-T11
- C1-C7, L1-L5
What is the insertion point of Semispinalis Capitis?
What is the insertion point of Semispinalis Capitis?
- Transverse processes of T1-T6
- Spinous processes of vertebrae above
- Costal table of the next lower rib
- Medial half of the area between the superior and inferior nuchal lines on the occipital bone (correct)
List the Semispinalis muscles.
List the Semispinalis muscles.
Thoracis, cervicis, capitis
What innervates the Semispinalis muscles?
What innervates the Semispinalis muscles?
Which of the following are muscles of the Transversospinalis?
Which of the following are muscles of the Transversospinalis?
From where does Multifidus originate?
From where does Multifidus originate?
What is the insertion point for Multifidus?
What is the insertion point for Multifidus?
The origin of Rotatores is the ______.
The origin of Rotatores is the ______.
Describe the insertion of Rotatores.
Describe the insertion of Rotatores.
What is the function of Rotatores?
What is the function of Rotatores?
What are the functions of Multifidus?
What are the functions of Multifidus?
Where do Interspinalis and Intertransversarii originate?
Where do Interspinalis and Intertransversarii originate?
What is the insertion of Interspinalis and Intertransversarii?
What is the insertion of Interspinalis and Intertransversarii?
What is the function of Interspinalis and Intertransversarii?
What is the function of Interspinalis and Intertransversarii?
Where does Levator Costarum originate?
Where does Levator Costarum originate?
What is the insertion point of Levator Costarum?
What is the insertion point of Levator Costarum?
Study Notes
Transversospinales Muscles Overview
- Comprises muscles that connect vertebrae in the spine, essential for rotation and stabilization.
- Includes the Semispinalis, Multifidus, Rotatores, Interspinales, Intertransversarii, and Levator costarum.
Semispinalis Muscles
- Origin: Transverse processes of thoracic and cervical vertebrae.
- Subtypes:
- Semispinalis thoracis and cervicis: Insertion to spinous processes of adjacent vertebrae.
- Semispinalis capitis: Originates from transverse processes of T1-T6; inserts superiorly to the medial half between the superior and inferior nuchal lines on the occipital bone.
Multifidus
- Origin: Sacrum, ilium, transverse processes of T1-T12, and articular processes of C4-C7.
- Insertion: Spinous processes of vertebrae above, spanning 2-4 vertebrae.
- Function:
- Unilateral: Flexes trunk laterally and rotates opposite side.
- Bilateral: Extends the trunk and stabilizes vertebral column.
Rotatores
- Origin: Transverse processes of vertebrae.
- Insertion: Positioned between lamina and transverse processes of the vertebrae above (spanning one for rotatores brevis and two for rotatores longus).
- Function: Rotates superior vertebrae to the opposite side.
Interspinalis and Intertransversarii
- Origin: C1-C7 and L1-L5.
- Insertion: Spinous processes of adjacent vertebrae.
- Function: Extends cervical and lumbar spine.
Levator Costarum
- Origin: Transverse processes of C7-T11.
- Insertion: Costal angle of the next lower rib (brevis) or rib 2 vertebrae below (longus).
Innervation
- The semispinalis muscles are innervated by the dorsal rami of inferior cervical and thoracic nerves, facilitating motor control.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz provides flashcards on the transversospinales muscles of the back, focusing on their origins, insertions, and definitions. Perfect for students in anatomy or related fields to reinforce their knowledge of muscle anatomy.
