1. 5/9 points
Match each neurological term to its meaning. (Two answers are not used.)
when the inside of the neuron becomes more positive than
the resting potential
depolarization
depolarization
a large depolariza
...
1. 5/9 points
Match each neurological term to its meaning. (Two answers are not used.)
when the inside of the neuron becomes more positive than
the resting potential
depolarization
depolarization
a large depolarization that carries an electrical signal along
the axon
action potential
action potential
covers the axon and makes electrical conduction more rapid myelin sheath
myelin sheath
ions that enter the neuron and initiate electrical conduction
along the axon acetylcholine sodium
a neurotransmitter that passes an electrical signal from one
neuron to another
dendrite acetylcholine
a neuronal fiber that conducts an electrical signal toward the
cell body
sodium dendrite
a neuronal fiber that conducts an electrical signal away from
the cell body potassium axon
the difference between electrical charges on each side of the
neuron's membrane
membrane potential
membrane potential
a small space that separates an axon from another neuron synapse synapse
2. 2/2 points
What is the function of homeotic genes in animal development?
3. 2/2 points
In mammals, hormone signals are required for
4. 2/2 points
Which of the following are stem cells that can produce all cell types in the human body?
They store information within the cytoplasm of the ovum.
They control the process of metamorphosis.
They control whether an animal is male or female.
They control the development of individual body
segments.
none of these
expression of homeotic genes
development of female characteristics of an
embryo
none of these
sex differentiation of both male and female
embryos
development of male characteristics of an
embryo
Cells in the bone marrow of an adult.
Cells in the testes that normally produce sperm.
Cells from the inner cell mass of a blastocyst.
all of these
Cells in the brain tissue of an adult.
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