Nervous System Structure and Directions

<p>Perpendicular to the ground and parallel to the neuraxis (A)</p> Signup and view all the answers

<p>A hollow tube (D)</p> Signup and view all the answers

<p>Sagittal section (A)</p> Signup and view all the answers

<p>Dorsal (A)</p> Signup and view all the answers

<p>Third week (B)</p> Signup and view all the answers

<p>It begins as a flat neural plate. (A)</p> Signup and view all the answers

<p>Neuraxis (C)</p> Signup and view all the answers

<p>Horizontal section (C)</p> Signup and view all the answers

<p>Neurons (B)</p> Signup and view all the answers

<p>Caudal (B)</p> Signup and view all the answers

<p>It changes into a solid mass. (B)</p> Signup and view all the answers

<p>Toward the belly (D)</p> Signup and view all the answers

An imaginary line through the CNS, from the spinal cord to the forebrain.

Near the head.

Near the tail.

Process where the neural plate forms the neural tube during embryonic development.

The central nervous system starts as a plate of cells, forming a hollow tube, which maintains this basic tube shape.

Toward the back of the body, like a turtle's shell.

Toward the belly of the body, like the underside of a fish.

Slices of the brain taken perpendicular to the neuraxis, like slices of salami.

Slices of the brain parallel to the ground, like looking at a flat landscape.

Slices of the brain perpendicular to the ground, dividing it into symmetrical halves.

A thickened sheet of cells that forms during early embryonic development, destined to become the CNS.

A hollow tube formed from the neural plate during embryonic development, which will eventually form the brain and spinal cord.

Cells that migrate away from the neural tube during development, forming components of the peripheral nervous system.

The central nervous system (CNS) comprises the brain and spinal cord, while the peripheral nervous system (PNS) includes all nerves outside the CNS.

Neurulation is crucial as it marks the beginning of the central nervous system's formation, transforming the neural plate into a neural tube.