Chapter 12
Interneurons are also called ________________.
association neurons
If soma contains lots of endoplasmic reticulum, it is called
Nissl bodies
Gaps between Schwann cells are called _________________.
Nodes of Ranvier
Which of the following is not a PNS tissue? a) Ganglion b) Nucleus c) Nerves d) A and B
Nucleus
_________________ are cells that help maintain neurons.
Nueroglia
The images in question 45 depict the structural classification based on a) Shape and form b) Number of soma c) Number of processes d) Number of dendrites
Number of Processes
_________________ nervous system is composed of nerves, ganglia, enteric plexuses, receptors.
Peripheral
_______________________ system and ___________________ are 2 parts of the nervous system.
Peripheral nervous system (pns) and central nervous system (cns)
Resting potential is slightly _____________ outside of cell
Positive
Changes in polarization of membrane produce signals (t/f)
True
Membrane ion channels in neurons allow ions such as Na+ to enter cell at the right time which Initiates/propagates electrical signaling (t/f)
True
Microglia are small with spiny projections (t/f)
True
Myelination of the axons increases the speed of electrical signals. (t/f)
True
Neurotransmitters cause an electrical signal (t/f)
True
Neurotransmitters must be broken down to stop the signal (t/f)
True
Oligodendrocytes surround parts of several axons in CNS (t/f)
True
Schwann cells surround axons in the PNS (t/f)
True
Stimulation causes neurotransmitter release (t/f)
True
all neurons have resting membrane potential. (t/f)
True
___________________ channels respond to electrical stimulus
Voltage gated
Neurons touch each others in order to transmit the signal. (t/f)
False
Newborns' nerves have overproduction of myelin sheath on their neurons. (t/f)
False
Sensory neurons are also called _______________. a) Efferent b) Interneuron c) Afferent d) B and C
Afferent
Which of following is not what neurons do? a) Respond to stimuli by converting to electrical impulse b) Senses; thinking; memory; control muscles & glands c) Cannot undergo mitotic division d) All are correct.
All are correct
The neuron cell is made up of which of the following parts? a) Axon b) Dendrites c) Nucleus d) All of the above
All of the above
_____________ part of PNS Controls smooth & cardiac muscle and glands a) Somatic b) Autonomic c) Enteric d) Enteroautonmic
Autonomic
Sensory information from visceral is done by
Autonomic Nervous system
Smooth muscles are controlled by _______________. a) SNS b) ANS c) ENS d) All of the above
Autonomic Nervous system
______________ Propagates impulses away from the neuron. a) Axon b) Dentrite c) Soma d) Synapse
Axon
_______________ produce action potentials and propagate impulses away from the ________. a) Dendrite; neuron b) Neuron; dendrite c) Axon; neuron d) Axon; dendrite
Axon, Neuron
_________________ neurons connect afferent and efferent neurons a) Efferent b) Afferent c) Association d) Interneuron e) C and D
C and D, they are the same
Most signals stimulating effectors originate in the ____________ nervous system
Central Nervous System (cns)
______________ recives stimuli and transmits action potential to _______________. a) Dendrite; soma b) Soma; dendrite c) Axon; soma d) Axon; dendrite
Dendrite, soma
Which of the following is not a type of neuroglia? a) Dendrocytes b) Astrocytes c) Oligodendrocytes d) PNS ganglia
Dendrocytes
Motor neurons are also called _______________. a) Efferent b) Interneuron c) Afferent d) B and C
Efferent
Which of the following is a part of peripheral nervous system? a) Midbrain b) Thalamus c) Enteric d) Hypothalamus
Enteric
___________________ part of PNS controls smooth muscle in most of the gastrointestinal tract a) Somatic b) Autonomic c) Enteric d) Enteroautonomic
Enteric
Schwann cells wrap around axons many times in CNS
False, PNS
Astrocytes produce myelin sheath in CNS. (t/f)
False, oligodendrocytes
Electrical signals jumps across the synapse (t/f)
False, they cannot
1. Which of the following is not a phase of an action potential? a) Depolarization b) Repolarization c) Hypopolarization d) Hyperpolarization
Hypopolerization
Which of the following is not a function of nervous system? a) Integration b) Sensation c) Motor d) Inclusion e) A and B and D
Inclusion
________________ means nervous system processing senses/determines responses.
Integration
____________ channels allow ion diffusion, particularly K+
Leak
In _______________________ channels Neurotransmitters trigger response
Ligand-Gated
_________________________ channels respond to a chemical ligand
Ligand-gated
______________________ channels Respond to mechanical stimulus
Mechanically Gated
Which of the following is not a type of neuroglia? a) Microglia b) Schwann cells c) Satellite cells d) Mirobiome e) Ependymal cells
Mirobiome
When integration elicits motor response from effectors, this function is called ____________.
Motor
Which of the following is a not part of peripheral nervous system? a) Somatic b) Nerves c) Autonomic d) Enteric
Nerves
Which of the following is not a CNS tissue? a) Nucleus b) Tracts c) White matter d) Grey matter e) Nerves
Nerves
bundle of axons in Peripheral nervous system is called____________.
Nerves
________________ are excitable cells in nervous tissue.
Neurons
____________ and ______________ are 2 types of cells in nervous tissue.
Neurons and nueroglia
Which of the following is not the right match? a) Neurons_ undergo mitotic division b) Neuroglia _ undergo mitotic division a) Neurons_ Senses; thinking; memory; control muscles & glands c) Neuroglia _ help maintain neurons
Neurons undergo mitotic division
_____________ monitor stimuli and relay signals
Receptors
Voluntary muscle contractions are controlled by_______________. a) SNS b) ANS c) ENS d) All of the above
SNS
________________ "feed" neurons
Satellite cells
________________ cells produce the myelin sheath around the axons.
Schwann cells
_____________ means that receptors receive/detect stimuli, and Information is transferred to brain or spinal cord.
Sensation
Neurons come in which different type(s)?
Sensory and motor
Cell body of the neuron is called ______________.
Soma
____________ of a neuron contains a nucleus, cytoplasm, and organelles
Soma
____________ part of PNS Controls voluntary muscle contraction a) Somatic b) Autonomic c) Enteric d) Eneroautonomic
Somatic
_______________________ and __________________ are 2 division of autonomic nervous system.
Sympathetic and parasympathetic
________________________ contain neurotransmitters.
Synaptic Vesticles
The direction of action potential in sensory neurons is a) Toward CNS b) Away from CNS c) Both away and toward CNS d) There is no action potential in CNS
Toward CNS
Which of the following is not a type of ion channel? a) Leak channel b) Ligand-gated channel c) Mechanically-gated channel d) Transmitter channel e) Voltage-gated channel
Transmitter channel
___________ help integrate sensory and motor functions a) Efferent b) Afferent c) Association d) Interneuron e) C and D
e
________________ cells produce cerebrospinal fluid in CNS
ependymal cells
What is the basic unit of the nervous system?
neuron
________________ myelinate axons of the CNS
oligodendrocytes
______________ is the junction between neurons.
synapse
