WorksheetsBio chapter 43 (exam 3)
Total questions: 95
Worksheet time: 2hrs 35mins
Name the term:
-Tiny spaces between neurons.
Synapses
Electrochemical
Neurotransmitters
Resting Potential
What are the TWO basic types of nervous systems?
nerve net
central nervous system
CNS
PNS
what do sensory neurons do?
carry impulses to central nervous system (CNS)
carry impulses from CNS to effectors (muscles and glands)
provide reflexes and associative functions (learning and memory)
what do motor neurons do?
carry impulses to central nervous system (CNS)
carry impulses from CNS to effectors (muscles and glands)
provide reflexes and associative functions (learning and memory)
what do Interneurons do?
carry impulses to central nervous system (CNS)
carry impulses from CNS to effectors (muscles and glands)
provide reflexes and associative functions (learning and memory)
In vertebrates the CNS consists of
brain and spinal cord
brain and neurons
neurons and spinal cord
only brain
what are tiny spaces between neurons?
synapses
electrical signals
chemical signals
axons
fill in the blank
Information travels by ____ within a neuron until it gets to the end of an axon
synapses
electrical signals
chemical signals
axons
fill in the blank
Information crosses synapses via ____ (neurotransmitters)
synapses
electrical signals
chemical signals
axons
what is the term?
exists when there is a separation of charged particles across some space
electrical potential
electrical gradient
electrical signal
synapses
fill in the blank
when voltage exists charged particles flow down their ____
electrical potential
electrical gradient
electric current
none of the above
what is the structure of a neuron?
a cell body or soma
dendrites
axons
all of the above
what term applies to converting chemical signals?
dendrite
cell body
axon
what term applies to integrating incoming electrical signals?
dendrite
cell body
axons
what conducts electrical signals?
dendrite
cell body
axon
When an electrical potential exists across a plasma membrane, the separation of charges is a ____?
membrane potential
electrical gradient
volt
axon
membrane potentials are a form of a?
potential energy
electrical energy
chemical energy
electrical potential
For Resting Potential of a Neuron is K+ greater INSIDE CELL or OUTSIDE CELL ?
inside cell
outside cell
For Resting Potential of a Neuron is Na+ greater INSIDE CELL or OUTSIDE CELL ?
inside cell
outside cell
when a neuron is NOT communicating with other cells, the difference in charge across its membrane is the ?
resting potential
membrane potential
electrical potential
chemical potential
The membrane potential at which a particular type of ion or other particle does not diffuse through the membrane in either direction.
equilibrium potential
resting potential
membrane potential
electrical potential
All action potentials for a given neuron are?
identical in magnitude and duration
different in magnitude and duration
identical in magnitude and different duration
ion exchange across membrane so less polarized
depolarization
threshold potential
action potential
CNS
Action potential will not occur unless depolarization is great enough to reach ____
threshold potential
depolarization
same magnitude
repolarization
action potentials are always propagated down the?
ENTIRE length of the axon
HALF length of the axon
1/4 length of the axon
none of the above
action potential begins when?
Na flows into the neuron making it more POSITIVE inside axon
K flows into the neuron making it more POSITIVE inside axon
Na flows into the neuron making it more NEGATIVE inside axon
K flows into the neuron making it more NEGATIVE inside axon
What are the THREE phases of action potential?
depolarization
repolarization
hyperpolarization
threshold potential
During the depolarization phase what happens?
the membrane potential changes from highly negative, crosses zero, and then is briefly positive
-Na outside cell
changes the membrane potential back to negative
-Na leaves again
when the membrane potential is slightly more negative than the resting potential
during the repolarization phase what heppens
the membrane potential changes from highly negative, crosses zero, and then is briefly positive
-Na outside cell
changes the membrane potential back to negative
-Na leaves again
when the membrane potential is slightly more negative than the resting potential
during the hyperpolarization phase what happens ?
the membrane potential changes from highly negative, crosses zero, and then is briefly positive
-Na outside cell
changes the membrane potential back to negative
-Na leaves again
when the membrane potential is slightly more negative than the resting potential
Voltage-Gated Channels cause what?
depolarization
hyperpolarization
repolarization
what term applies to membrane proteins that open and close in response to changes in membrane voltage
voltage gate channels
ion channels
stimulated ions
voltage-gated Na+ sodium channels are?
once opened & closed, they can't be opened again for a short period of time
opened with a delay
voltage-gated K+ potassium channels
once opened & closed, they can't be opened again for a short period of time
opens with a delay
Why don't action potentials propagate back up the axon in the direction of the cell body?
because the "upstream" voltage-gated sodium channels in the direction of the cell body, are in the refractory state
because the occurrence of an event make the same event more likely to occur
because Na and Cl ions are high
because of the flow in electrical charge
T/F?
Action potentials are all-or-none events.
true
false
Fill in the blank:
During synapses, information travels by _____ within a neuron until it gets to the end of an axon.
Electrical Signals
Electrochemical Nature
Resting Potential
Neurotransmitters
Neurotransmitters serve as...
Neurons
Action Potential
Ligands
Membrane Potentials
Cause membrane to depolarize ( i.e. to move towards the threshold
potential ).
Inhibitory postsynaptic potentials (IPSPs)
Excitatory postsynaptic potentials (EPSPs)
What is the term:
is a bundled group of axons that extend through body.
Neurons
Neurotransmitters
Nerve
Sensory Effectors
Choose the Correct Option:
What includes the brain and the spinal cord
CNS
PNS
All of these are the 4 main regions of the brain EXCEPT
Temporal Lobe
Frontal Lobe
Occipital Lobe
Parietal Lobe
Corpus Lobe
Controls the conscious thought and memory.
Cerebrum
Cerebellum
Diencephalon
Brain Stem
Controls the coordination of complex motor patterns.
Cerebrum
Cerebellum
Brain Stem
Diencephalon
Choose the correct division that correlates with each response:
-Stimulate Salivation
Parasympathetic Division
Sympathetic Division
Choose the correct division that correlates with each response:
- Slow Heartbeat
-Constrict airways
Parasympathetic Division
Sympathetic Division
Choose the correct division that correlates with each response:
- Stimulate activity of stomach
- Inhibit release of glucose; stimulate gallbladder
Parasympathetic Division
Sympathetic Division
Choose the correct division that correlates with each response:
- Stimulate activity of intestines
-Contract bladder
- Promote erection of genitals
Parasympathetic Division
Sympathetic Division
Choose the correct division that correlates with each response:
- dilate pupils
- Inhibit salivation
Parasympathetic Division
Sympathetic Division
Choose the correct division that correlates with each response:
- Increase heartbeat
- Relax airways
- Inhibit activity of stomach
Parasympathetic Division
Sympathetic Division
In the cerebrum, the spatial visualization and analysis is seen in which hemisphere
Right Hemisphere
Left Hemisphere
Choose the correct option:
the nerves that branch out from the CNS components and extend to other parts of the body – to the sense organs, muscles, and glands, is in the...
CNS ( Central Nervous System )
PNS ( Peripheral Nervous System )
Fill in the blanks:
The ___ transmits information too and from the ___.
PNS, CNS
CNS, PNS
PNS, PNS
CNS, CNS
Choose the correct option:
Includes the nervous and ganglion is known as the...
CNS
PNS
Choose the correct option:
The main functions of the ___ are voluntary movements such as chewing food, walking, and facial expressions.
PNS
CNS
Choose the correct option:
regulates autonomic functions such as breathing, heart rate, and digesting – the unconscious bodily behaviors.
CNS
PNS
Choose the correct option:
___is responsible for coordinating INVOLUNTARY behaviors such as heart rate, breathing, and digestion. This system allows these important functions to take place WITHOUT CONSCIOUS THOUGHT, SO THEY WORK AUTOMATICALLY.
Autonomic Nervous System
Somatic Nervous System
Choose the correct option:
___is associated with activities traditionally thought of as CONSCIOUS OR VOLUNTARY. Is key for carrying messages throughout the body, in order to initiate and control movement.
Autonomic Nervous System
Somatic Nervous System
Choose the correct option:
This system processes sensory information from external stimuli (e.g. through hearing, sight, and touch) as well as MOTOR information, which then carries signals to and from the CNS.
Autonomic Nervous System
Somatic Nervous System
True or False:
The PNS connects the CNS to the rest of the body.
True
False
In the cerebrum, language and math computation is seen in which hemisphere
Right Hemisphere
Left Hemisphere
Choose the correct division that correlates with each response:
- Secrete epinephrine and norepinephrine ( hormones that stimulate activity )
- Promote ejaculation and vaginal contraction
Parasympathetic Division
Sympathetic Division
Choose the correct division that correlates with each response:
- Stimulate release of glucose; inhibit gallbladder
- Inhibit activity of intestines
-Relax bladder
Parasympathetic Division
Sympathetic Division
Choose the correct division that correlates with each response:
-Constrict Pupils
Parasympathetic Division
Sympathetic Division
Choose the TWO correct options:
The Parasympathetic division is also known as the...
Fight
Flight
Reset
Digest
Choose the term:
Transmits MOTOR information.
Afferent Division
Efferent Division
Choose the term:
Transmits SENSORY information
Afferent Division
Efferent Division
Choose the TWO correct options:
The Sympathetic Division is also known as the...
Fight
Flight
Reset
Digest
The nervous system IS NOT under conscious control in the...
Somatic Nervous System
Autonomic Nervous System
The nervous system IS under conscious control in the...
Somatic Nervous System
Autonomic Nervous System
Information is translated to a chemical signal (neurotransmitter) at the synapse.
Presynaptic Neuron
Postsynaptic Neuron
Information travels in the form of an electrical signal within a neuron (action potentials)
Presynaptic Neuron
Postsynaptic Neuron
Neurons that connect the right and left cerebral hemispheres is called...
Corpus Callosum
Synapses
CNS
PNS
Controls the information relay and control of homeostasis.
Cerebrum
Cerebellum
Brain Stem
Diencephalon
Controls the information relay and center of autonomic control for heart, lungs, and the digestive system.
Cerebrum
Cerebellum
Brain Stem
Diencephalon
Fill in the blank:
There is ____ main regions of the brain.
One
Two
Three
Four
Choose the correct option:
sends information via ACTION potentials
CNS
PNS
A rapid, temporary change in membrane potential.
Neurons
Action Potential
Resting Potential
Membrane Potentials
Consists of neurons and supporting cells.
Nervous System
Digestive System
Respiratory System
Endocrine System
Choose the correct TWO options:
Nervous system links...
Sensory Receptors
Motor Effectors
Interneurons
Sensory Neurons
Motor Neurons
True or False:
Neurons receive signals from many other neurons.
True
False
Fill in the blank:
Vertebrates have ____ types of neurons.
One
Two
Three
Four
Fill in the blank:
All animals must be able to respond to ____
Enviornmental Stimuli
Interneurons
Sensory Neurons
Motor Neurons
True or False:
EPSPs and IPSPs act in concert and are graded (not all-or- nothing).
True
False
Increase likelihood of action potential.
Excitatory postsynaptic potentials (EPSPs)
Inhibitory postsynaptic potentials (IPSPs)
Can also be modulatory― modify a neuron’s response to other EPSPs or IPSPs.
Membrane Potentials
Action Potentials
Resting Potentials
Postsynaptic Potentials
Decreasing likelihood of action potential.
Excitatory postsynaptic potentials (EPSPs)
Inhibitory postsynaptic potentials (IPSPs)
Cause membrane to be hyper polarized.
Excitatory postsynaptic potentials (EPSPs)
Inhibitory postsynaptic potentials (IPSPs)
True or False:
Postsynaptic Potentials are caused by Neurotransmitters.
True
False
Fill in the blank:
Effects of _____ are variable: either make action potentials more likely (excitatory) or less likely (inhibitory) in postsynaptic cell.
PNS
Neurotransmitters
Synapses
CNS
What is the term:
_____ bind ligand-gated ion channels, causing ions to flow into postsynaptic cell
Synapses
Neurotransmitters
Action Potential
Resting Potential
True or False:
Neurotransmitter effects are temporary; they get taken back by presynaptic cell and reused.
True
False
What is the term:
The cell on the receiving end of the synapse is called
Neurotransmitters
Ligands
Postsynaptic Cell
Action Potential
True or False:
Information crosses synapses via chemical signals also known as (neurotransmitters).
True
False
What types of organisms have neurons and muscle cells?
all animals except sponges
all animals except whales
all animals except lizards
all animals except birds
