In the human nervous system:

there are almost equal numbers of glia cells and neurons

The peripheral nervous system includes:

only cranial nerves, spinal nerves, and their branches.

Parasympathetic neuron cell bodies are located in:

nuclei of the brainstem and the lateral gray columns of the sacral cord.

The four structures that compose the conduction system of the heart are the

SA node, AV node, AV bundle, and Purkinje fibers.

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anatomy

Question	Answer
One of the components of the blood-brain barrier is:	astrocytes.
Dendrites conduct impulses _____ cell bodies.	toward
The largest and most numerous types of neuroglia are the:	astrocytes
The white matter of the nervous system is made up of:	myelinated fibers
In the human nervous system:	there are almost equal numbers of glia cells and neurons
A neuron that transmits a nerve impulse toward the central nervous system is called a(n):	sensory neuron.
Which of the following is the deepest connective tissue layer of a nerve?	Endoneurium
Gray matter in the brain and spinal cord consists primarily of:	cell bodies.
The spinal ganglion can be found on the _____ of the spinal nerve.	dorsal nerve root
The nerve commonly called the vagus nerve is the _____ cranial.	tenth
The phrenic nerve is found in the _____ plexus	cervical
There are _____ ventricles in the brain.	four
The peripheral nervous system includes:	only cranial nerves, spinal nerves, and their branches.
Parasympathetic neuron cell bodies are located in:	nuclei of the brainstem and the lateral gray columns of the sacral cord.
The cranial nerve that arises from the spinal cord is the:	accessory
The innermost layer of the meninges is the:	pia mater.
The spinal tract is located on the side of the cord, originates in the brain, and terminates in the spinal cord in the _____ tract.	lateral corticospinal
The main divisions of the central nervous system are the:	brain and spinal cord.
In _____, blood moves from veins to other veins or arteries to other arteries without passing through an intervening capillary network.	vascular anastomoses
The term blood type refers to the type of blood cell	antigen.
Atria are often called _____ because they receive blood from vessels called veins.	receiving chambers
Blood flow from the heart through blood vessels to all parts of the body and back to the heart is referred to as _____ circulation.	systemic
The _____ is(are) supplied with blood from the left subclavian artery.	head and upper extremities
Mechanical devices that permit the flow of blood in one direction only are called	valves.
The four structures that compose the conduction system of the heart are the	SA node, AV node, AV bundle, and Purkinje fibers.
The heart has its own special covering, a loose-fitting inextensible sac called the	pericardium.

Created by: ecortez16

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