Question 1

Terminal branches of an axon are anchored close to the ends of the dendrites of another neuron at regions called ___&#8203;&#10;A) &#8203;sarcolemmas&#10;B) &#8203;neurotransmitters&#10;C) &#8203;synapses&#10;D) &#8203;hillocks

Accepted Answer

Terminal branches of an axon are anchored close to the ends of the dendrites of another neuron at regions called synapses. Sarcolemmas are the membranes around muscle cells, neurotransmitters are chemical messengers released by neurons, and hillocks are regions of the axon where it meets the cell body.

Question 2

The first nerve cell receiving an impulse directly from a receptor is called a motor or efferent neuron.&#8203;

Accepted Answer

The first nerve cell receiving an impulse directly from a receptor is called a sensory or afferent neuron, not a motor or efferent neuron.

Question 3

&#8203;Neurons that convey information from the brain and spinal cord to muscles and glands are called ____ neurons.&#10;A) &#8203;efferent&#10;B) &#8203;afferent&#10;C) &#8203;interneurons&#10;D) &#8203;cranial

Accepted Answer

Efferent neurons, also known as motor neurons, carry signals from the brain and spinal cord to muscles and glands in the body. This allows for movement and response to stimuli. Afferent neurons, on the other hand, carry signals from sensory receptors in the body to the brain and spinal cord. Interneurons are neurons that connect other neurons and are found within the brain and spinal cord. Cranial refers to the bones that protect the brain.

Question 4

&#8203;The ____ system is the body's control center and communication network.&#10;A) &#8203;muscular&#10;B) &#8203;digestive&#10;C) &#8203;nervous&#10;D) &#8203;cardiovascular

Accepted Answer

The nervous system is responsible for controlling and coordinating all bodily functions and relaying information throughout the body. It includes the brain, spinal cord, and nerves. The muscular, digestive, and cardiovascular systems each have functions related to movement, digestion/absorption of nutrients, and circulation, respectively, but they do not serve as the body's main control center and communication network like the nervous system does.

Question 5

&#8203;The parasympathetic division of the autonomic nervous system uses the neurotransmitter ____ at nerve endings.&#10;A) &#8203;dopamine&#10;B) &#8203;epinephrine&#10;C) &#8203;norepinephrine&#10;D) &#8203;acetylcholine

Accepted Answer

The parasympathetic division of the autonomic nervous system releases acetylcholine at nerve endings.

Question 6

&#8203;A bundle of nerve cells or fibers is called a ____.&#10;A) &#8203;fascicle&#10;B) &#8203;nerve&#10;C) &#8203;neuroglia&#10;D) &#8203;neuron

Accepted Answer

A bundle of nerve cells or fibers is called a nerve. A fascicle is a bundle of muscle fibers, neuroglia are support cells in the nervous system, and a neuron is an individual nerve cell.

Question 7

&#8203;Myelin sheaths surrounding nerve fibers in the peripheral nervous system are produced by ____.&#10;A) &#8203;Schwann cells&#10;B) &#8203;microglia&#10;C) &#8203;satellite cells&#10;D) &#8203;astrocytes

Accepted Answer

Myelin sheaths in the peripheral nervous system are produced by Schwann cells.

Question 8

Over 60% of all brain cells are neurons.&#8203;

Accepted Answer

Most of the brain's cells are glial cells, not neurons; neurons make up about 50% or less of the cells in the brain.

Question 9

The ____ nervous system consists of the brain and spinal cord.&#8203;&#10;A) &#8203;peripheral&#10;B) &#8203;central&#10;C) &#8203;autonomic&#10;D) &#8203;somatic

Accepted Answer

The central nervous system consists of the brain and spinal cord. The peripheral nervous system includes all the nerves outside of the brain and spinal cord, while the autonomic and somatic nervous systems are subsets of the peripheral nervous system.

Question 10

&#8203;Neurons that have several dendrites and one axon are called ____ neurons.&#10;A) &#8203;bipolar&#10;B) &#8203;unipolar&#10;C) &#8203;multipolar&#10;D) &#8203;uniaxial

Accepted Answer

Neurons that have several dendrites and one axon are called multipolar neurons. Multipolar neurons are the most common neurons in the central nervous system and are responsible for sending and receiving signals from other neurons.

Question 11

&#8203;Sodium-potassium pumps restore the resting membrane potential following an action potential, a process known as ____.&#10;A) &#8203;repolarization&#10;B) &#8203;depolarization&#10;C) &#8203;hyperpolarization&#10;D) &#8203;bipolarization

Accepted Answer

The answer of &#8203;Sodium-potassium pumps restore the resting membrane potential...

Question 12

&#8203;The chemicals that transmit signals across the synapse are called ____.&#10;A) &#8203;sarcolemmas&#10;B) &#8203;neurotransmitters&#10;C) &#8203;synapses&#10;D) &#8203;receptors

Accepted Answer

The answer of &#8203;The chemicals that transmit signals across the...

Question 13

Cells that line the fluid-filled ventricles of the brain, some of which produce cerebrospinal fluid, are called ____.&#8203;&#10;A) &#8203;oligodendrocytes&#10;B) &#8203;astrocytes&#10;C) &#8203;microglia&#10;D) &#8203;ependymal cells

Accepted Answer

The answer of Cells that line the fluid-filled ventricles of...

Question 14

The action potential moves in both directions down a nerve fiber.&#8203;

Accepted Answer

The answer of The action potential moves in both directions...

Question 15

The parasympathetic division of the autonomic nervous system stimulates the body's vegetative activities such as digestion, urination, and defecation.&#8203;

Accepted Answer

The answer of The parasympathetic division of the autonomic nervous...

Question 16

&#8203;The final nerve cell that receives the impulse and brings about the reaction to the original stimulus is called the motor or ____ neuron.&#10;A) &#8203;afferent&#10;B) &#8203;inter&#10;C) &#8203;bipolar&#10;D) &#8203;efferent

Accepted Answer

The answer of &#8203;The final nerve cell that receives the...

Question 17

&#8203;Star-shaped cells that form a supporting network in the brain and spinal cord are called ____.&#10;A) &#8203;oligodendrocytes&#10;B) &#8203;astrocytes&#10;C) &#8203;microglia&#10;D) &#8203;ependymal cells

Accepted Answer

The answer of &#8203;Star-shaped cells that form a supporting network...

Question 18

An unmyelinated nerve fiber conducts an impulse over its entire length with a slower rate of conduction than that of a myelinated fiber.&#8203;

Accepted Answer

The answer of An unmyelinated nerve fiber conducts an impulse...

Question 19

&#8203;Most synapses in our bodies use the ____ neurotransmitter.&#10;A) &#8203;acetylcholine&#10;B) &#8203;dopamine&#10;C) &#8203;epinephrine&#10;D) &#8203;norepinephrine

Accepted Answer

The answer of &#8203;Most synapses in our bodies use the...

Question 20

&#8203;Most sensory neurons are ____ neurons.&#10;A) &#8203;multipolar&#10;B) &#8203;interneurons&#10;C) &#8203;unipolar&#10;D) &#8203;bipolar

Accepted Answer

The answer of &#8203;Most sensory neurons are ____ neurons.&#10;A) &#8203;multipolar&#10;B)...

Question 21

&#8203;Ascending tracts of the spinal cord carry ____ information from body parts to the brain.&#10;A) &#8203;interneural&#10;B) &#8203;motor&#10;C) &#8203;efferent&#10;D) &#8203;sensory

Accepted Answer

The answer of &#8203;Ascending tracts of the spinal cord carry...

Question 22

Gaps in the myelin sheath are called the ____________________.&#8203;

Accepted Answer

The answer of Gaps in the myelin sheath are called...

Question 23

The spinal cord is a continuation of the ____.&#8203;&#10;A) &#8203;medulla oblongata&#10;B) &#8203;thalamus&#10;C) &#8203;hypothalamus&#10;D) &#8203;pons

Accepted Answer

The answer of The spinal cord is a continuation of...

Question 24

Nerve cell bodies found outside the central nervous system are called ____.&#8203;&#10;A) &#8203;tracts&#10;B) &#8203;nerves&#10;C) &#8203;neurons&#10;D) &#8203;ganglia

Accepted Answer

The answer of Nerve cell bodies found outside the central...

Question 25

&#8203;There are ____ pairs of cervical nerves.&#10;A) &#8203;10&#10;B) &#8203;8&#10;C) &#8203;12&#10;D) &#8203;6

Accepted Answer

The answer of &#8203;There are ____ pairs of cervical nerves.&#10;A)...

Question 26

&#8203;All the spinal nerves are ____ nerves.&#10;A) &#8203;sensory&#10;B) &#8203;motor&#10;C) &#8203;mixed&#10;D) &#8203;efferent

Accepted Answer

The answer of &#8203;All the spinal nerves are ____ nerves.&#10;A)...

Question 27

&#8203;The smallest and simplest pathway able to receive a stimulus and produce a response is the ____________________.

Accepted Answer

The answer of &#8203;The smallest and simplest pathway able to...

Question 28

Neurons that convey information from receptors in the periphery of the body to the brain and spinal cord are known as ____________________ neurons.&#8203;

Accepted Answer

The answer of Neurons that convey information from receptors in...

Question 29

&#8203;Nerve cells known as ____ transmit nerve impulses in the form of electrochemical changes.&#10;A) &#8203;neurons&#10;B) &#8203;microglia&#10;C) &#8203;oligodendrocytes&#10;D) &#8203;astrocytes

Accepted Answer

The answer of &#8203;Nerve cells known as ____ transmit nerve...

Question 30

&#8203;The outermost spinal meninx is called the ____.&#10;A) &#8203;arachnoid mater&#10;B) &#8203;dura mater&#10;C) &#8203;epimeninges&#10;D) &#8203;pia mater

Accepted Answer

The answer of &#8203;The outermost spinal meninx is called the...

Question 31

The ____________________ of a Schwann cell contains the cell's nucleus and most of its cytoplasm, which remain outside the myelin sheath.&#8203;

Accepted Answer

The answer of The ____________________ of a Schwann cell contains...

Question 32

&#8203;The ____ act like the male sex hormones.&#10;A) &#8203;stimulants&#10;B) &#8203;depressants&#10;C) &#8203;anabolic steroids&#10;D) &#8203;hallucinogens

Accepted Answer

The answer of &#8203;The ____ act like the male sex...

Question 33

A bundle of fibers located outside the central nervous system is called a(n) ____.&#8203;&#10;A) &#8203;tract&#10;B) &#8203;ganglion&#10;C) &#8203;nerve&#10;D) &#8203;axon

Accepted Answer

The answer of A bundle of fibers located outside the...

Question 34

Descending tracts of the central nervous system that conduct impulses down the spinal cord are concerned with ____ functions.&#8203;&#10;A) &#8203;sensory&#10;B) &#8203;motor&#10;C) &#8203;afferent&#10;D) &#8203;interneuron

Accepted Answer

The answer of Descending tracts of the central nervous system...

Question 35

&#8203;Areas of the nervous system known as ____ consist of nerve cells bodies and dendrites.&#10;A) &#8203;white matter&#10;B) &#8203;ganglia&#10;C) &#8203;tracts&#10;D) &#8203;gray matter

Accepted Answer

The answer of &#8203;Areas of the nervous system known as...

Question 36

&#8203;Valium is an example of a(n) ____.&#10;A) &#8203;depressant&#10;B) &#8203;stimulant&#10;C) &#8203;hallucinogen&#10;D) &#8203;anabolic steroid

Accepted Answer

The answer of &#8203;Valium is an example of a(n) ____.&#10;A)...

Question 37

&#8203;The nerve fibers on the nerve cell that receive signals are called ____________________.

Accepted Answer

The answer of &#8203;The nerve fibers on the nerve cell...

Question 38

&#8203;The space that separates the meninges from the vertebrae is called the ____ space.&#10;A) &#8203;subarachnoid&#10;B) &#8203;subdura&#10;C) &#8203;epidural&#10;D) &#8203;submater

Accepted Answer

The answer of &#8203;The space that separates the meninges from...

Question 39

&#8203;The ____ division of the autonomic nervous system stimulates and speeds up certain bodily activities.&#10;A) &#8203;parasympathetic&#10;B) &#8203;sympathetic&#10;C) &#8203;somatic&#10;D) &#8203;central

Accepted Answer

The answer of &#8203;The ____ division of the autonomic nervous...

Question 40

&#8203;A bundle of fibers inside the central nervous system is called a ____.&#10;A) &#8203;ganglion&#10;B) &#8203;tract&#10;C) &#8203;nucleus&#10;D) &#8203;soma

Accepted Answer

The answer of &#8203;A bundle of fibers inside the central...

Question 41

Matching&#10;&#8203;Match the description with the corresponding term.&#10;a.&#8203;astrocytes&#10;b.&#8203;Schwann cells&#10;c.&#8203;acetylcholine&#10;d.&#8203;ventral root&#10;e.&#8203;neuron&#10;f.&#8203;microglia&#10;g.&#8203;white matter&#10;h.&#8203;action potential&#10;i.&#8203;afferent neuron&#10;j.CNS&#10;&#8203;neurotransmitter

Accepted Answer