Nervous system 8.6 (spinal cord)

The spinal cord extends from the ________ at the base
of the skull to the ________

The inferior end of the spinal cord and the spinal nerves exiting there resemble a horse’s tail and are collectively called the

TRUE or FALSE
The white matter consists of ________, and the gray matter is mainly a collection of _________.

The white matter in each half of the spinal cord is organized into three columns, called the

_________ consist of axons that conduct action potentials toward the brain,

_________ consist of axons that conduct action potentials away from the brain.

The ______ of the spinal cord is shaped like the letter H,
with posterior horns and anterior horns.

The _____ is a fluid-filled space in the center of the spinal cord.

TRUE or FALSE
The anterior and lateral horns of the spinal cord gray matter contain the cell bodies of motor neurons, which regulate the
activities of muscles and glands.
True False

TRUE OR FALSE
Somatic motor neurons are in the ventral horn, and autonomic neurons are in the lateral horn.
True False

What is the simplest reflex?

It is a classical example of stretch-reflex in which the stimulus for this reflex is stretching of the quadriceps femoris muscle. 
Clinicians use the knee-jerk reflex to determine if the higher CNS centers that normally influence this reflex are functional

TRUE or FALSE 
The function of the withdrawal reflex, or flexor reflex, is to
remove a limb or another body part from a painful stimulus
True False