Sophia - Human Biology - Unit 3 Challenge 1
1 — Neurons
Identify the components, types, and functions of neurons.
Which part of the neuron transmits signals to other neurons, glands or muscle cells?
a.) Axon endings
b.) Dendrites
c.) Cell body
d.) Trigger zone
2 — Membrane Potential and Action Potential
This lesson will describe how the differences in concentrations of ions across a plasma
membrane set the stage for a nerve impulse.
Which is the correct sequence of the flow of nerve impulses in a neuron?
a.) Nucleus → Cell body → Dendrite
b.) Axon → Cell body → Dendrite
c.) Dendrite → Axon → Axon terminal
d.) Dendrite → Axon terminal → Axon
3 — Neurotransmitters
This lesson will describe neurons communicate when sending a signal through the nervous
system.
What is the name of a synapse that stores a neurotransmitter for release?
a.) Presynaptic cell
b.) Action potential
c.) Postsynaptic cell
d.) Botox
4 — Nerves as Information Pathways
This lesson will explain a reflex as the simplest nerve pathway as well as briefly describe the
structure of a nerve.
A __________ is an automatic movement in response to a stimulus, such as jerking your
lower leg when your knee is struck with a mallet.
a.) threshold
b.) trigger zone
c.) reflex
d.) synapse
1 — Neurons
Identify the components, types, and functions of neurons.
Which part of the neuron transmits signals to other neurons, glands or muscle cells?
a.) Axon endings
b.) Dendrites
c.) Cell body
d.) Trigger zone
2 — Membrane Potential and Action Potential
This lesson will describe how the differences in concentrations of ions across a plasma
membrane set the stage for a nerve impulse.
Which is the correct sequence of the flow of nerve impulses in a neuron?
a.) Nucleus → Cell body → Dendrite
b.) Axon → Cell body → Dendrite
c.) Dendrite → Axon → Axon terminal
d.) Dendrite → Axon terminal → Axon
3 — Neurotransmitters
This lesson will describe neurons communicate when sending a signal through the nervous
system.
What is the name of a synapse that stores a neurotransmitter for release?
a.) Presynaptic cell
b.) Action potential
c.) Postsynaptic cell
d.) Botox
4 — Nerves as Information Pathways
This lesson will explain a reflex as the simplest nerve pathway as well as briefly describe the
structure of a nerve.
A __________ is an automatic movement in response to a stimulus, such as jerking your
lower leg when your knee is struck with a mallet.
a.) threshold
b.) trigger zone
c.) reflex
d.) synapse
