PHSL 1010 Unit 2 Chapter 6 Questions And
Answers 100% Correct
Many axons diverge into several branches, and each of these is tipped with multiple
axon terminals. A large branch off of an axon is called an axon. - ANSWER collateral
What do you call the branches of an axon? - ANSWER collaterals
The neurons entirely contained within the CNS that make connections between other
neurons and that make up 99% of all neurons are known as. - ANSWER interneurons
A bundle of afferent and efferent neuron axons bound together by connective tissue in
the peripheral nervous system is called a. - ANS nerve
The structure inside the circle that results from these two adjacent neurons is called a. -
ANS synapse
What is the functional connection between a neuron and an effector cell called. - ANS
synapse
The highly selective barrier to diffusion that the specialized capillaries of the brain
create is called the. - ANSWER blood-brain-barrier
The junction between a neuron and either another neuron or an effector cell is called
a(n). - ANSWER synapse
The electrical potential between charges tends to make them flow, thus producing a. -
ANSWER current
, The hindrance to electrical charge movement is known as. - ANSWER resistance
Sodium ions are in higher concentration in the.fluid, while potassium ions are in higher
concentration in the.fluid. - ANSWER extracellular, intracellular
All cells under resting conditions have a voltage difference between the inside and
outside of their plasma membranes, which is referred to as the. - ANSWER resting
membrane potential
This is known as the equilibrium potential for the ion, where the concentration gradient
for an ion across the membrane creates a flux that is equal and opposite to the flux
created by the electrical gradient. - ANSWER equilibrium potential
The ability of cells with actively-gated channels to generate electrical signals is known
as: - ANSWER excitability
The ability of a cell to generate electrical impulses due to the action of actively gated ion
channels is called. - ANSWER excitability
Afferent Neurons - ANSWER - Convey information toward the CNS.
- Most rare type of neuron.
- Have sensory receptors at their peripheral endings.
- Cell body and long peripheral process of the axon are in the PNS.
Efferent Neurons - ANSWER - Convey information away from the CNS.
-Second most abundant type of neuron.
-Axons terminate on muscles, glands, or other neurons.
-Cell body, dendrites, and small segment of axon are in the CNS.
Answers 100% Correct
Many axons diverge into several branches, and each of these is tipped with multiple
axon terminals. A large branch off of an axon is called an axon. - ANSWER collateral
What do you call the branches of an axon? - ANSWER collaterals
The neurons entirely contained within the CNS that make connections between other
neurons and that make up 99% of all neurons are known as. - ANSWER interneurons
A bundle of afferent and efferent neuron axons bound together by connective tissue in
the peripheral nervous system is called a. - ANS nerve
The structure inside the circle that results from these two adjacent neurons is called a. -
ANS synapse
What is the functional connection between a neuron and an effector cell called. - ANS
synapse
The highly selective barrier to diffusion that the specialized capillaries of the brain
create is called the. - ANSWER blood-brain-barrier
The junction between a neuron and either another neuron or an effector cell is called
a(n). - ANSWER synapse
The electrical potential between charges tends to make them flow, thus producing a. -
ANSWER current
, The hindrance to electrical charge movement is known as. - ANSWER resistance
Sodium ions are in higher concentration in the.fluid, while potassium ions are in higher
concentration in the.fluid. - ANSWER extracellular, intracellular
All cells under resting conditions have a voltage difference between the inside and
outside of their plasma membranes, which is referred to as the. - ANSWER resting
membrane potential
This is known as the equilibrium potential for the ion, where the concentration gradient
for an ion across the membrane creates a flux that is equal and opposite to the flux
created by the electrical gradient. - ANSWER equilibrium potential
The ability of cells with actively-gated channels to generate electrical signals is known
as: - ANSWER excitability
The ability of a cell to generate electrical impulses due to the action of actively gated ion
channels is called. - ANSWER excitability
Afferent Neurons - ANSWER - Convey information toward the CNS.
- Most rare type of neuron.
- Have sensory receptors at their peripheral endings.
- Cell body and long peripheral process of the axon are in the PNS.
Efferent Neurons - ANSWER - Convey information away from the CNS.
-Second most abundant type of neuron.
-Axons terminate on muscles, glands, or other neurons.
-Cell body, dendrites, and small segment of axon are in the CNS.
