ASU BIO 181 EXAM 3 LATEST ACTUAL EXAM 160 QUESTIONS
AND CORERCT DETAILED ANSWERS
The autonomic nervous system contains the sympathetic and trie parasympathetic
nervous system. - ANSWER: True
Potassium ions are at high concentrations inside of cells including in neurons. -
ANSWER: True
The post-synaptic cell can be: - ANSWER: In glands, muscle cells, neurons
The axon hillock in the pre-synaptic neuron fires based on temporal and spatial
summation of inputs. - ANSWER: True
Only pre-synaptic neurons are coated with myelin. - ANSWER: False
The axon from a pre-synaptic cell contacts the axon of another neuron. - ANSWER:
False
Acetylcholine esterase breaks acetylcholine into muscarinic acid - ANSWER: False
Excitatory synapses cause depolarization of the post-synaptic cell. - ANSWER: True
The action potential is: - ANSWER: A result of the movement of ions
Fast neurons as described in lecture are fast because they are surrounded by a type
of glial cell that results in a myelin coating - ANSWER: False
The central nervous svstem (CNS) contains: - ANSWER: none of the answers are
correct
The neural tissues are:
a. Spinal cord, sensory neurons, and cell body
b. Spinal cord, sensory neurons, and brain
c. Brain, and sensory neurons
d. Pituitary and hypothalamus
e. None of the above - ANSWER: Spinal cord, sensory neurons, and brain
In the motor end plate, the event that is the immediate trigger for exocytosis is: -
ANSWER: Calcium Ions
The membrane potential (resting potential) is largely set by the Na-K-ATPase pump. -
ANSWER: true
, The cell body refers to the part of the neurons that begin at the dendrites and
extend to the axon terminal. - ANSWER: false
Acetylcholine exocytosed from the presynaptic cell travels to the postsynaptic cell to
start the action potential in the postsynaptic cell. - ANSWER: true
Fast neurons as described in lecture require cytoplasmic signal transduction to open
an ion channel. - ANSWER: False
Excitatory synapses cause hyperpolarization of post-synaptic cells. - ANSWER: false
Excitatory synapses make the post-synaptic cell less likely to fire. - ANSWER: false
The receptors in post-synaptic cells are the basis on which the synapse can be
defined as inhibitory or excitatory. - ANSWER: false
When the presynaptic cell contacts a muscle cell, the synapse area is called a motor
end plate. - ANSWER: true
Receptors are made from membrane bound polyribosomes. - ANSWER: true
terminal web - ANSWER: is a site of exocytosis
The resting potential of neurons Is: - ANSWER: The answer is not on this list
Voltage-gated ion channels open when a protein binds to the receptor. - ANSWER:
False
Insulin is a ligand. - ANSWER: True
When the Sympathetic nervous system is triggered glycogen is broken down to
glucose to provide more energy. - ANSWER: True
The medulla of the adrenal gland produces epinephrine (i.e., adrenaline). - ANSWER:
True
Vitamin D is synthesized from cholesterol - ANSWER: True
The Parasympathetic Nervous System is triggered is trigger to act by exposure to
epinephrine - ANSWER: False
Vitamin D is really a hormone. - ANSWER: True
Vitamin D causes the parathyroid to inhibit new PTH synthesis. - ANSWER: True
Insulin is produced by alpha cells. - ANSWER: False
AND CORERCT DETAILED ANSWERS
The autonomic nervous system contains the sympathetic and trie parasympathetic
nervous system. - ANSWER: True
Potassium ions are at high concentrations inside of cells including in neurons. -
ANSWER: True
The post-synaptic cell can be: - ANSWER: In glands, muscle cells, neurons
The axon hillock in the pre-synaptic neuron fires based on temporal and spatial
summation of inputs. - ANSWER: True
Only pre-synaptic neurons are coated with myelin. - ANSWER: False
The axon from a pre-synaptic cell contacts the axon of another neuron. - ANSWER:
False
Acetylcholine esterase breaks acetylcholine into muscarinic acid - ANSWER: False
Excitatory synapses cause depolarization of the post-synaptic cell. - ANSWER: True
The action potential is: - ANSWER: A result of the movement of ions
Fast neurons as described in lecture are fast because they are surrounded by a type
of glial cell that results in a myelin coating - ANSWER: False
The central nervous svstem (CNS) contains: - ANSWER: none of the answers are
correct
The neural tissues are:
a. Spinal cord, sensory neurons, and cell body
b. Spinal cord, sensory neurons, and brain
c. Brain, and sensory neurons
d. Pituitary and hypothalamus
e. None of the above - ANSWER: Spinal cord, sensory neurons, and brain
In the motor end plate, the event that is the immediate trigger for exocytosis is: -
ANSWER: Calcium Ions
The membrane potential (resting potential) is largely set by the Na-K-ATPase pump. -
ANSWER: true
, The cell body refers to the part of the neurons that begin at the dendrites and
extend to the axon terminal. - ANSWER: false
Acetylcholine exocytosed from the presynaptic cell travels to the postsynaptic cell to
start the action potential in the postsynaptic cell. - ANSWER: true
Fast neurons as described in lecture require cytoplasmic signal transduction to open
an ion channel. - ANSWER: False
Excitatory synapses cause hyperpolarization of post-synaptic cells. - ANSWER: false
Excitatory synapses make the post-synaptic cell less likely to fire. - ANSWER: false
The receptors in post-synaptic cells are the basis on which the synapse can be
defined as inhibitory or excitatory. - ANSWER: false
When the presynaptic cell contacts a muscle cell, the synapse area is called a motor
end plate. - ANSWER: true
Receptors are made from membrane bound polyribosomes. - ANSWER: true
terminal web - ANSWER: is a site of exocytosis
The resting potential of neurons Is: - ANSWER: The answer is not on this list
Voltage-gated ion channels open when a protein binds to the receptor. - ANSWER:
False
Insulin is a ligand. - ANSWER: True
When the Sympathetic nervous system is triggered glycogen is broken down to
glucose to provide more energy. - ANSWER: True
The medulla of the adrenal gland produces epinephrine (i.e., adrenaline). - ANSWER:
True
Vitamin D is synthesized from cholesterol - ANSWER: True
The Parasympathetic Nervous System is triggered is trigger to act by exposure to
epinephrine - ANSWER: False
Vitamin D is really a hormone. - ANSWER: True
Vitamin D causes the parathyroid to inhibit new PTH synthesis. - ANSWER: True
Insulin is produced by alpha cells. - ANSWER: False
