Question 1

True or False
A reflex is a pre-programmed involuntary response to a stimuli.

Accepted Answer

True

Question 2

Sensory information enters the spinal cord through the

Accepted Answer

dorsal root.

Question 3

The spinal nerves that exit between the cervical and thoracic vertebral regions are called

Accepted Answer

C8

Question 4

The event immediately following a depolarizing stimulus is that ________ the cell.

Accepted Answer

sodium rushes into

Question 5

When a cell is not active, its membrane potential is referred to as a(n) ________ potential.

Accepted Answer

resting

Question 6

The ________ division tends to prepare the body for action.

Accepted Answer

sympathetic

Question 7

Planning, motivation, and social judgment are functions of the brain associated with which part of the cerebrum?

Accepted Answer

Frontal lobe

Question 8

After axonal injury, regeneration in peripheral nerves is guided by ________.

Accepted Answer

Schwann cells

Question 9

Where do action potentials begin?

Accepted Answer

Axon Hillock

Question 10

The meninges that cover the spinal cord from outermost to innermost are ________.

Accepted Answer

dura mater, arachnoid mater, pia mater

Question 11

Depolarization is characterized by a(n)

Accepted Answer

increase of Na inside.

Question 12

Potentially damaging stimuli that result in pain are selectively detected by ________.

Accepted Answer

nociceptors

Question 13

Neurons and other excitable cells respond to stimuli by producing ________.

Accepted Answer

electrical signals

Question 14

The structure found between the posterior rootlets and the posterior root ganglion is called the ________.

Accepted Answer

posterior root of a spinal nerve

Question 15

Afferent nerves are called __________, and motor nerves are called __________.

Accepted Answer

sensory nerves; efferent nerves

Question 16

Which type of neuroglia attaches blood vessels to neurons or anchors neurons in place?

Accepted Answer

astrocytes

Question 17

The portions of the spinal segments and roots that extend past the end of the spinal cord are called the

Accepted Answer

cauda equina.

Question 18

Which of the following cranial nerves is mispaired?

Facial - VII

Accessory - XI

Abducens - V

Oculomotor - III

Accepted Answer

Abducens - V

abducens is cranial nerve VI

Question 19

Where does a neuron receive incoming Signals?

Accepted Answer

Dendrites

Question 20

Cerebrospinal fluid fills the space between the ________.

Accepted Answer

arachnoid mater and pia mater

Question 21

In nervous system physiology, the definition of a reflex is a ________.

Accepted Answer

Rapid, predictable, involuntary motor response to a stimulus

Question 22

Nerves are ________ of the nervous system.

Accepted Answer

organs

Question 23

What are the chemical messengers released by neurons that are used to either to excite or to inhibit other cells?

Accepted Answer

neurotransmitters

Question 24

Voluntary motor impulses leave the spinal cord via the ________ of gray matter.

Accepted Answer

anterior horn

Question 25

Nerves that carry impulses toward the CNS only are ________.

Accepted Answer

afferent nerves

Question 26

What are the enlarged areas of a neuron where neurotransmitters are released from?

Accepted Answer

Axon Terminals

Question 27

The skeletal muscles are innervated by the ________ nervous system.

Accepted Answer

somatic

Question 28

Extracellular fluid normally contains high levels of

Accepted Answer

sodium

Question 29

General sensory receptors respond to many stimuli, including ________.

Accepted Answer

touch

Question 30

Repolarization is characterized by a(n)

Accepted Answer

increase of K inside.

Question 31

If the specialized area of the cerebral hemisphere corresponding to Broca's area is damaged, what is the result:

Accepted Answer

motor control of the speech muscles is lost

Question 32

In which part of a neuron is the postsynaptic membrane usually found?

Accepted Answer

dendrite

Unit 4

Unit 4 Quiz: Lecture Homework ; 34/35 97%

Question	Answer
True or False A reflex is a pre-programmed involuntary response to a stimuli.	True
Sensory information enters the spinal cord through the	dorsal root.
The spinal nerves that exit between the cervical and thoracic vertebral regions are called	C8
The event immediately following a depolarizing stimulus is that ________ the cell.	sodium rushes into
When a cell is not active, its membrane potential is referred to as a(n) ________ potential.	resting
The ________ division tends to prepare the body for action.	sympathetic
Planning, motivation, and social judgment are functions of the brain associated with which part of the cerebrum?	Frontal lobe
After axonal injury, regeneration in peripheral nerves is guided by ________.	Schwann cells
Where do action potentials begin?	Axon Hillock
The meninges that cover the spinal cord from outermost to innermost are ________.	dura mater, arachnoid mater, pia mater
Depolarization is characterized by a(n)	increase of Na inside.
Potentially damaging stimuli that result in pain are selectively detected by ________.	nociceptors
Neurons and other excitable cells respond to stimuli by producing ________.	electrical signals
The structure found between the posterior rootlets and the posterior root ganglion is called the ________.	posterior root of a spinal nerve
Afferent nerves are called __________, and motor nerves are called __________.	sensory nerves; efferent nerves
Which type of neuroglia attaches blood vessels to neurons or anchors neurons in place?	astrocytes
The portions of the spinal segments and roots that extend past the end of the spinal cord are called the	cauda equina.
Which of the following cranial nerves is mispaired? Facial - VII Accessory - XI Abducens - V Oculomotor - III	Abducens - V abducens is cranial nerve VI
Where does a neuron receive incoming Signals?	Dendrites
Cerebrospinal fluid fills the space between the ________.	arachnoid mater and pia mater
In nervous system physiology, the definition of a reflex is a ________.	Rapid, predictable, involuntary motor response to a stimulus
Nerves are ________ of the nervous system.	organs
What are the chemical messengers released by neurons that are used to either to excite or to inhibit other cells?	neurotransmitters
Voluntary motor impulses leave the spinal cord via the ________ of gray matter.	anterior horn
Nerves that carry impulses toward the CNS only are ________.	afferent nerves
What are the enlarged areas of a neuron where neurotransmitters are released from?	Axon Terminals
The skeletal muscles are innervated by the ________ nervous system.	somatic
Extracellular fluid normally contains high levels of	sodium
General sensory receptors respond to many stimuli, including ________.	touch
Repolarization is characterized by a(n)	increase of K inside.
If the specialized area of the cerebral hemisphere corresponding to Broca's area is damaged, what is the result:	motor control of the speech muscles is lost
In which part of a neuron is the postsynaptic membrane usually found?	dendrite

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