A Primitive Groove Is the Equivalent of a

question 23

Multiple Choice

A primitive groove is the equivalent of a

• A) neural crest.
• B) branchial groove.
• C) blastodisc.
• D) blastopore.
• E) neural groove.

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Definitions:

Semispinalis Thoracis

A muscle in the back that extends from the thoracic vertebrae to the base of the skull, helping in the extension and rotation of the spine.

Multifidus

A muscle located in the spine that stabilizes the vertebrae and assists with spinal movements.

Quadratus Lumborum

A deep muscle in the lower back that helps with the stabilization of the pelvis and the spine, as well as aiding in lateral movement of the torso.

Serratus Posterior

A muscle group consisting of the serratus posterior superior and inferior, which aid in the movements of the rib cage.