BIO120 Ch 13 lecture 1

Front

What is the grey matter in the spinal cord primarily composed of?

Back

Unmyelinated somas of neurons.

Front

What features divide the spinal cord into left and right halves?

Back

Anterior median fissure and posterior medial sulcus.

Front

What is the name of the deep groove on the front of the spinal cord?

Back

Anterior Median Fissure.

Front

What is the membrane that surrounds each individual nerve fiber called?

Back

Endoneurium.

Front

What neural tissue surrounds a fascicle of nerve fibers?

Back

Perineurium.

Front

What is the function of the anterior median fissure?

Back

It divides the spinal cord into left and right halves.

Front

What is the role of the endoneurium in the nervous system?

Back

It provides a protective layer around individual nerve fibers.

Front

What is the difference between the epineurium and perineurium?

Back

Epineurium surrounds the entire nerve, while perineurium surrounds individual fascicles.

Front

What type of axons are found in the white matter of the spinal cord?

Back

Myelinated axons of neurons.

Front

What is the significance of the butterfly shape of grey matter in the spinal cord?

Back

It indicates the arrangement of unmyelinated somas and is crucial for processing information.