abubunervous.three.two

Question 1

Which of the following accurately describes a sensation?

Answer 1

-An action potential is generated when touch receptors are stimulated.

Question 2

The glial cells that form a myelin sheath around axons are

Answer 2

-Both “the Schwann cells” and “the oligodendrocytes” are correct.

Question 3

Which of the following statements about summation in the nervous system is INCORRECT?

Answer 3

-Spatial summation also occurs when local potentials overlap in time.

Question 4

Gaps between segments of oligodendrocytes or between individual schwann cells are called

Answer 4

-Nodes of Ranvier

Question 5

The _____ consists of the brain and spinal cord.

Answer 5

-Central Nervous System

Question 6

In a neuron, short branching cytoplasmic extensions that receive information and carry it to the cell body are called ______

Answer 6

-Dendrites

Question 7

Continues conduction of the action potential

Answer 7

-Both “occurs in the myelinated axons” and “is a function of the nodes of Ranvier” are correct.

Question 8

The ________ of the reflex hammer is used to tap on tendons or ligaments.

Answer 8

-Broad Flat slide

Question 9

The ________ of the reflex hammer is used to touch and move over areas of the skin.

Answer 9

-Metallic Tip

Question 10

The ________ of the reflex hammer is used to touch a finger over a structure in the body.

Answer 10

-Pointed Side

Question 11

Most sensory input that ascends through the spinal cord and brainstem projects to the _____.

Answer 11

-Thalamus

Question 12

If blood glucose decreases below normal,

Answer 12

-The nervous system will malfunction.

Question 13

White matter of the CNS

Answer 13

-Is formed by bundles of parallel axons with their myelin sheaths.

Question 14

Chemical substances released from the presynaptic terminal

Answer 14

-Are called neurotransmitters

Question 15

Which of the ff would be an expected symptom of amge to the temporal lobe?

Answer 15

-Impaired recognition of sounds

Question 16

Francis is suffering from dizziness. His family doc has run several tests and believes the problem is damage to a cranial nerve. Which nerves is most likely damaged?

Answer 16

-Vestibulocochlear Nerve

Question 17

A small, rounded body on the midline, nearest the cerebrum, is the ______.

Answer 17

-Pineal Body

Answer 18

Diencephalon

Question 19

Chuck Wildlee, a baseball pitcher, was struck on the head by a line drive hit by Charley Hussek. Fortunately, Chuck was not seriously injured, but when he was revived, he couldn’t remember how many balls and strikes the batter had. This was because

Answer 19

-He lost both working and short-term memory

Question 20

Disruption of the blood supply causing death of parts of the brain also causes the group of clinical conditions referred to as

Answer 20

-A cerebrovascular accident (a stroke)

Question 21

Trina was reading about a supplement that can help a person lose weight. When she tried it, she experienced some horrible side effects. Her heart rate was high and she perspired profusely. It appears from these effects that the supplement increased_______

Answer 21

-Sympathetic

Question 22

The type of memory that is involved with the retaining of facts such as names or dates as well as associated emotional undertones is called____ memory

Answer 22

-Declarative

Question 23

The grooves between the gyri are called ____.

Answer 23

-Sulci

Question 24

The axon may be wrapped with a series of neuroglial cells called the _____.

Answer 24

-Schwann Cells

Question 25

There are ____ pairs of cranial nerves.

Answer 25

-12

Question 26

____ are complex nerve networks in which fibers from several different spinal nerves are reorganized to form specific peripheral nerves.

Answer 26

-Plexi

Question 27

The some a cone-shaped ______ as it projects to form an axon.

Answer 27

-Axon Hillock

Question 28

A group of myelinated fibers may form a region of nerve tissue called ______.

Answer 28

-White Matter

Question 29

The surface of the cerebrum is covered with large folds of tissue called ______.

Answer 29

-Gyri

Question 30

A response where toes extend and move apart.

Answer 30

-Babinski Response

Question 31

If the signal passes directly from the afferent neuron to the efferent neuron, it is a _______.

Answer 31

-Monosynaptic Reflex

Question 32

The presence of an interneuron indicates a

Answer 32

-Polysynaptic Reflex

Question 33

The ________ conducts the signal from the receptor to the spinal cord.

Answer 33

-Afferent Neuron

Question 34

The _______ receives a signal from either the afferent or interneuron and carries the signal to the effector.

Answer 34

-Efferent Neuron

Question 35

A ______ detects the appropriate stimulus.

Answer 35

-Receptor

Question 36

_______ are triggered by a stimulus and result in a predictable response.

Answer 36

-Reflexes