Question 1

The central nervous system consists of only the brain and spinal cord.

Accepted Answer

The central nervous system (CNS) consists of the brain and spinal cord, as opposed to the peripheral nervous system (PNS) which consists of all the nerves that connect the CNS to various organs and tissues in the body.

Question 2

The space inside the vertebral column that contains the spinal cord is known as the vertebral canal.

Accepted Answer

The vertebral canal is the space inside the vertebral column that contains the spinal cord.

Question 3

The nerve impulse jumps from one neuron to the next over a space called a neurotransmitter.

Accepted Answer

The nerve impulse does not jump over a neurotransmitter, but rather over a small gap called a synapse. Neurotransmitters are chemical messengers that are released into the synapse to transmit the impulse from one neuron to the next.

Question 4

The parietal lobe controls memory,equilibrium,emotion,and hearing.

Accepted Answer

The parietal lobe is actually responsible for processing sensory information such as touch, pressure, temperature, and pain. It also plays a role in spatial awareness and perception. The functions listed in the statement are actually controlled by other areas of the brain such as the hippocampus (memory), vestibular system (equilibrium), amygdala (emotion), and temporal lobe (hearing).

Question 5

Bundles of neurons,the bearers of electrical messages to the organs and muscles of the body,are known as nerves.

Accepted Answer

This statement is true. Nerves are indeed bundles of neurons that transmit electrical messages to the organs and muscles of the body.

Question 6

The peripheral nervous system consists of 19 pairs of cranial nerves and 28 pairs of spinal nerves.

Accepted Answer

The peripheral nervous system consists of 12 pairs of cranial nerves and 31 pairs of spinal nerves.

Question 7

The four main divisions of the brain are the brainstem,the cerebrum,the cerebellum,and the corpus callosum.

Accepted Answer

The corpus callosum is not considered one of the four main divisions of the brain. The four main divisions are the brainstem, the cerebrum, and the cerebellum.

Question 8

The two parts of a neuron are the cell body and the axon.

Accepted Answer

A neuron consists of three main parts: the cell body (soma), dendrites, and the axon.

Question 9

The human adult brain weighs approximately eight pounds,is 85 percent water,and contains over 10 billion neurons.

Accepted Answer

The average adult human brain weighs about 3 pounds, is composed of about 75% water, and contains approximately 86 billion neurons.

Question 10

The frontal lobe controls and interprets the senses and taste.

Accepted Answer

The frontal lobe is responsible for many functions including reasoning, planning, problem-solving, and movement. It does not directly control or interpret the senses and taste. This falls under the responsibility of other areas of the brain such as the parietal lobe and insular cortex.

Question 11

The basic element of the nervous system is a nerve cell,or neuron.

Accepted Answer

The statement is true. The neuron is the basic unit of the nervous system and is responsible for transmitting information throughout the body.

Question 12

The axon,which conducts nerve impulses away from the cell body,is generally a single branch covered by fatty tissue called the myelin sheath.

Accepted Answer

The axon is generally a single branch that conducts nerve impulses away from the cell body and is covered by the myelin sheath, which is made up of fatty tissue.

Question 13

All neurons have two basic properties: excitability (anything that arouses a response)and conductivity (the ability to transmit a signal).

Accepted Answer

Excitability and conductivity are two fundamental properties of all neurons.

Question 14

The three layers of membranes that cover the brain and spinal cord are known as the meninges.

Accepted Answer

The statement is correct. The three protective membranes surrounding the brain and spinal cord are called the meninges.

Question 15

In order from outermost to innermost,the meninges are: the dura mater,the pia mater,and the arachnoid.

Accepted Answer

The correct order from outermost to innermost is: the dura mater, the arachnoid, and the pia mater.

Question 16

The left and right lobes of the cerebrum are each divided into four parts or lobes: the frontal lobe,the occipital lobe,the parietal lobe,and the temporal lobe.

Accepted Answer

This statement is true.

Question 17

The occipital lobe controls vision and various forms of expression.

Accepted Answer

The occipital lobe is responsible for processing visual information and plays a crucial role in vision. It is not directly involved in various forms of expression.

Question 18

The area between the brain and the cranium is filled with a liquid called cerebrospinal fluid.

Accepted Answer

This statement is true. The cerebrospinal fluid helps protect the brain and spinal cord by cushioning them from impact and by removing waste products.

Question 19

The cerebellum is the part of the brain that coordinates musculoskeletal movement to maintain posture,balance,and muscle tone.

Accepted Answer

This statement is true. The cerebellum is responsible for coordinating movements and maintaining posture, balance, and muscle tone.

Question 20

Nerve impulses are received or transmitted by tissue or organs called neuroglia.

Accepted Answer

Nerve impulses are received or transmitted by specialized cells called neurons, not neuroglia. Neuroglia, also known as glial cells, provide support and protection for neurons.

Quiz 8: Combining Forms, Prefixes, and Suffixes