Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
47 Cards in this Set
- Front
- Back
|
The brain and the spinal cord make up the ____________________ nervous sytem
|
central
|
|
|
The voluntary nervous system is also called the _____________________ nervous system
|
somatic
|
|
|
The scientific name for a nerve cell is ______________________
|
nueron
|
|
|
The fiber of a neuron that carries impulses toward the cell body is the ______________________
|
dendrite
|
|
|
All spinal nerves have both sensory and motor fibers. They are therefore described as ________________________
|
mixed nerves
|
|
|
A group of nerve fibers located with the central nervous system is called a ________________________
|
tract
|
|
|
Astrocytes and Schwann cells are examples of cells called _________________
|
neuroglia
|
|
|
A sudden electrical change in the neuronal membrane that is transmitted along an azon is called a _________________________
|
action potential
|
|
|
During the depolarizing phase of the action potential, ions of the element ____________________ enter the neuron through channels
|
sodium
|
|
|
Nerve impulse conduction is faster in axons coated with ______________________
|
myelin
|
|
|
A point of junction between two nerve cells is a _____________________
|
synapse
|
|
|
________________________ are chemicals that trasmit a signal across a synapse
|
neurotransmitters
|
|
|
The chemical that transmits the signal across the neuromuscular junction is called ______________________
|
acetylcholine
|
|
|
The dorsal and central horns of the spinal cord are part of the _________________ matter
|
gray
|
|
|
myelinated nervous tissue is described as ____________________ matter
|
white
|
|
|
Sensory impulses enter the ____________________ horn of the spinal cord
|
dorsal
|
|
|
A rapid, simple, automatic response that involved few neurons is a ____________________
|
reflex
|
|
|
A neuron that leaves the spinal cord through the ___________________ horn is carrying information away from the central nervous system
|
ventral
|
|
|
A reflex that does not pass through the brain is termed a ___________________ reflex
|
spinal
|
|
|
The number of pairs of spinal nerves is ______________________
|
31
|
|
|
There are ____________ pairs of cervical spinal nerves
|
8
|
|
|
The ____________________ plexus supplies nerves to the pelvis and legs
|
lumbosacral
|
|
|
The sympathetic nervous system can be classified as __________________ based on the main neurotransmitters used
|
adrenergic
|
|
|
The autonomic ganglia of the parasympathetic system are called _______________________
|
terminal ganglia
|
|
|
An increase in heart rate would be mediated by the __________________ branch of autonomic nerous system
|
sympathetic
|
|
|
The viral disease that infects motor neurons, leading to paralysis, is ___________________
|
poliomyelitis
|
|
|
Paralysis of both arms is called _______________________
|
diplegia
|
|
|
The word part -lemma means
|
sheath
|
|
|
Which of the following is NOT in the central nervous system
a) tract b) terminal ganglion c) white matter d) interneuron |
B) terminal ganglion
|
|
|
The division of the nervous system that exclusively controls skeletal muscles is the
a) peripheral nervous system b) central nervous system c) somatic nervous system d) autonomic nervous system |
c) somatic nervous system
|
|
|
The part of the nervous system that consists of ALL the spinal nerves and cranial nerves is the
a) peripheral nervous system b) central nervous system c) somatic nervous system d) autonomic nervous system |
a) peripheral nervous system
|
|
|
Fibers that conduct impulses away from the cell body are called
a) dendrites b) axons c) cell bodies d) neurilemma |
b) axons
|
|
|
Neurons that conduct impulses to the spinal cord and brain are called
a) motor neurons b) interneurons c) afferent neurons d) association neurons |
c) afferent neurons
|
|
|
A nerve containing only efferent fibers is a
a) sensory nerve b) mixed nerve c) motor nerve d) nerve tract |
c) motor nerve
|
|
|
The membrane surrounding the entire nerve is called the
a) perineurium b) endoneurium c) epineurium d) neurilemma |
c) epineurium
|
|
|
A collection of neuron cell bodies outside the central nervous system is called
a) nucleus b) ganglion c) tract d) nerve |
b) ganglion
|
|
|
Which of the following is NOT an example of a neuroglial cell?
a) neuron b) astrocyte c) Schwann cell d) all of the above are neuroglia |
a) neuron
|
|
|
Before the start of the action potential, the neuron membrane is
a) depolarized b) repolarized c) unpolarized d) at rest |
d) at rest
|
|
|
The outermost membrane of the myelin sheath is called the
a) neurilemma b) gray matter c) dendrite d) neuroglia |
a) neurilemma
|
|
|
Neurotransmitters bind to specific proteins on the postsnaptic membrane called
a) transporters b) receptors c) linkers d) channels |
b) receptors
|
|
|
Which of the following is NOT a neurotransmitter
a) acetylcholine b) dopamine c) dermatome d) noradrenaline |
c) dermatome
|
|
|
The central canal of the spinal cord contains
a) blood b) cerebrospinal fluid c) lymph d) saline |
b) cerebrospinal fluid
|
|
|
Motor impulses travel through the spinal cord in the
a) ascending tracts b) descending tracts c) gray matter d) nerves |
b) descending tracts
|
|
|
The knee jerk reflex is a
a) simple reflex b) spinal relfex c) stretch reflex d) all of the above |
d) all of the above
|
|
|
The cell bodies of the sensory neurons are found in the
a) white matter of the spinal cord b) dorsal root ganglion c) ventral root ganglion d) plexuses |
b) dorsal root ganglion
|
|
|
The branchial plexus supplies motor impulses to the muscles of the
a) neck b) shoulder c) pelvis d) legs |
b) shoulder
|
|
|
The phrenic nerve arises from the
a) branchial plexus b) lumbosacral plexus c) abdominal plexus d) cervical plexus |
d) cervical plexus
|
