What does the Autonomic Nervous System consist of?
Motor neurons that
convey information from the autonomic sensory receptors located
primarily in visceral organs. Sensory neurons that convey
information from autonomic sensory receptors located primarily in
visceral organs. Interneurons convey information from
autonomic sensory receptors located primarily in visceral
organs. Sensory neurons that convey information from
autonomic sensory receptors located primarily in visceral organs
& Motor neurons that conduct nerve impulses form the CNS to
smooth muscle, cardiac muscle, and glands
D
What are the 2 main divisions of the nervous system?
Parasympathetic
& Sympathetic Divisons Enteric & Autonomic Nervous
System Central Nervous System & Peripheral Nervous
System Somatic Nervous System & Peripheral Nervous
System
C
What do somatic motor neurons do?
Conduct impulses
away from the CNS to skeletal muscles. Conduct impulses to
the CNS to skeletal muscles. Conduct Impulses away from
the PNS to skeletal muscles Conduct impulses towards the
CNS to skeletal Muscles
A
The Somatic Nervous System Consists of ______
Somatic sensory
neurons that convey information to the sensory receptors in head,
body wall, and limbs. Somatic motor neurons that convey
information from the sensory receptors. Autonomic sensory
neurons that convey information from the sensory receptors in the
visceral walls. Somatic sensory neurons that convey
information from the sensory receptors in the head,body wall, and
limbs
D
What are the 2 branches of the motor part of the ANS?
PNS & ENS
Parasympathetic & Sympathetic Sensory &
Motor Autonomic Neuron & Motor Neron
B
What is the order of the 3 basic functions of the Nervous System?
Sensory,
Integrative, Motor Motor, Sensory, Integrative
Motor Neuron, Sensory Neuron Skin Receptors
A
What is the purpose of a sensory receptor?
Sensory receptors
allow the central nervous system to monitor changes in the internal
and external environment. Sensory receptors to allow the
peripheral nervous system to monitor changes in the internal and
external environment. Sensory neurons allow the central
nervous system to monitor changes in the external environment.
To help the Enteric Nervous System.
A
Which subdivisions of the PNS control voluntary actions?
Autonomic nervous
system Enteric nervous system Somatic nervous
system Autonomic nervous system & Enteric nervous
system
C
What is the function of the ENS?
To send action
potential to nearby axons To produce myelin sheath on
Schwann cells To control GI propulsion, acid, and hormonal
secretion To produce Earwax
C
Functions of the Nervous System ______________.
Detects environmental
changes that don't impact the body Allows us to sense
various smells, produce speech, and remember events, while providing
signals that control body movements and regulates the operation of
internal organs Allows us to not sense anything
Helps maintain homeostasis .
B
How does the Nervous System carry out its functions ?
Its excitable
characteristic of nervous tissue, which allows for the generation of
nerve impulses. Its excitable characteristic of nervous
tissue, which blocks the generation of nerve impulses By
using the Parasympathetic Division of the ANS. By secreting
Sebum.
A
What cells play a major role in support and nutrition of neurons?
Dendrites
Cell body Neuroglia Nissl bodies
C
Name the 3 parts of a neuron.
Nissl bodies, axon,
dendrites Cell body, dendrites, axon cell body,
sebaceous gland, hormones cell body, dendrites, gland
B
What part of the neuron is the receiving end ?
Trigger zone
Cell Body Nissl bodies Dendrites
D
The site of communication between two neurons or between a neuron and
an effector cell is called_______________.
Slow axonal
transport Synaptic end bulbs Synaptic vesicles
Synapse
D
Where does the axon conduct impulses ?
Away from the cell body
toward another neuron or effector cell. Towards the cell
body away from another neuron or effector cell. Away from
the dendrites toward the myelin sheath of an effector cell
Away from and axon terminal toward the cell body
A
What are the 2 main phase an action potential has?
Depolarizing,
Hyper-polarizing Depolarizing, Repolarizing
Threshold, Supra threshold Sub threshold,
threshold
B
Axons are classified into 3 groups based on _____________.
Axon diameter &
temperature Myelination, diameter, and action potential
speed. amount of myelin Myelination, temperature,
action potential speed.
B
What does not generate or conduct nerve impulses?
Neuroglia
Nuclei Tracts Nerves
A
What is the function of satellite cells?
Produce myelin
form and circulate CSF Support cells, surround cell
bodies id some neurons None of the above
C
What are the two types of neuroglia in the PNS?
Schwann cells &
satellite cells Ependymal cells & schwann cells
Microglia cells & astrocytes cells Microglia cells
& Ependymal cells
A
What is the function of the ependymal cells ?
Produce Myelin
Participate in phagocytosis form and circulate CSF
Help with the BBB
C
Oligodendrocytes myelinated ______________, while Schwann cells
myelinated _______________.
Several axons, one
axon. One axon, several axons None of the ABOVE
A
Schwann Cells produce myelin in the _____ and Oligodendrocytes
produce myelin in the _____.
ANS, ENS PNS,
SNS CNS, PNS PNS,CNS
D
What are the types of neuroglia in the Central Nervous System?
Astrocytes,
Oligodendrocytes, Microglia Astrocytes, Oligodendrocytes,
Microglia, Schwann Cells Astrocytes & Microglia
Astrocytes, Oligodendrocytes, Microglia, Ependymal Cells
D
During the depolarizing phase voltage-gated ______ channels open
allowing ______ to rush into the cell and make inside of the cell
progressively more positive.
K+, Na+ K+,
K+ Na+, Na+ Na+, K+
C
How are Neurons able to produce electrical signals ?
Action potential
Graded potential Summation potential Resting
membrane potential
D
The RMP of most neurons is _____ millivolts inside is negative.
+30 -70
-55 0
B
Graded potentials are _________ distance and Action potential are
__________ distance.
Short, Short
Long, Short Short, Long None of the above
C
Lack of myelin gives ________ a gray appearance.
Gray tracts
Gray Axons White Matter Gray Matter
D
Bundles of axons in the CNS are called __________.
Ganglia
Tract Nuclei Nerve
B
Clusters of cell bodies in the PNS are called _________.
Tract
Nerve Ganglia Nuclei
C
What is the cause of multiple sclerosis?
Autoimmune regeneration
of myelin Autoimmune destruction of myelin
Autonomic regeneration of myelin Autonomic destruction
of myelin
B
A stimulus that is too weak to depolarize the
membrane to threshold is called ____________.
All or non
principle Threshold stimulus Sub threshold
stimulus Supra threshold stimulus
C
Substances are synthesized or recycled in the neuron cell body with
two systems called _________.
Sodium potassium
Pumps Slow axonal transport, Fast axonal transport
Axonal gates channel , Voltage gated channel Leak
channels
B
A neuron's RMP is established by pumps and channels to create _____________
Ion gradients
Graded potentials Action potentials CSF
A
A stimulus that is just strong enough to depolarize
a membrane to threshold is called_________. a single action potential occurs.
Sub threshold
stimulus Threshold stimulus Supra threshold
stimulus Trigger Zone Stimulus
B
Neuroglia support neurons by __________________.
Forming the myelin
sheath on the axons Forming the BBB, myelin sheath around
neuronal axons, making CSF, and participating in phagocytosis.
Making CSF, participating in endocytosis. Forming the
BBB, myelin sheath around neuronal axons, making CSF
B
A stimulus that depolarizes the membrane above and beyond the
threshold causing several action potentials to occur is ___________.
Suprathreshold
Threshold Inhibitory graded potential Sub
Threshold
A
The synaptic cleft is the gap between ___________ cells.
Pre post synaptic
cells Pre and post synaptic cells axon terminal and
the post synaptic cells none of the above
B