Bio 181 ASU exam 3 Questions & Answers
2024
T or F: Potassium ions are at high concentrations inside of cells, including neurons -
CORRECT ANSWER-True
The action potential is a result of: - CORRECT ANSWER-the movement of ions
The post-synaptic cell can be: - CORRECT ANSWER-in glands, muscle cells and
neurons
Th resting potential of a neuron is - CORRECT ANSWER--60mV
T or F: The cell body refers to the part of the neurons that begin at the dendrites and
extend to the axon terminal - CORRECT ANSWER-false
T or F: Voltage gated ion channels open when a protein binds to the receptor -
CORRECT ANSWER-false
T or F: Excitatory synapses cause hyperpolarization of post-synaptic cells - CORRECT
ANSWER-false
T or F: Acetylcholinesterase breaks acetylcholine into muscarinic acid - CORRECT
ANSWER-false
In the motor end plate, the event that is the immediate trigger for exocytosis is -
CORRECT ANSWER-calcium ions
T or F: Fast Neurons as described in lecture require cytoplasmic signal transduction to
open an ion channel. - CORRECT ANSWER-False
T or F: Only pre-synaptic neurons are coated with myelin. - CORRECT ANSWER-False
T or F: When the presynaptic cell contacts a muscle cell, the synapse area is called a
motor end plate. - CORRECT ANSWER-True
T or F: Receptors are made from membrane-bound polyribosomes. - CORRECT
ANSWER-True
,The terminal web: - CORRECT ANSWER-is a site of exocytosis
T or F: Excitatory synapses cause depolarization of the post-synaptic cell - CORRECT
ANSWER-True
T or F: The membrane potential (resting potential) is largely set by the Na-K- ATPase
pump. - CORRECT ANSWER-true
The neural tissues are: - CORRECT ANSWER-spinal cord, sensory neurons and brain
T or F: the axon from a pre-synaptic cell contacts the axon of another neuron -
CORRECT ANSWER-false
T or F: The receptors in post-synaptic cells are the basis on which the synapse can be
defined as inhibitory or excitatory - CORRECT ANSWER-false
4 types of glial cells - CORRECT ANSWER-schwann, oligodendrocytes, astrocytess
and microglia
T or F: The axon hillock in the pre-synaptic neuron fires based on temporal and spatial
summation of inputs - CORRECT ANSWER-true
The central nervous contains - CORRECT ANSWER-spinal column and brain
T or F: Acetylcholine exocytosed from the presynaptic cell travels to the postsynaptic
cell to start the action potential in the postsynaptic cell. - CORRECT ANSWER-true
T or F: Fast neurons as described in lecture are fast because they are surrounded by a
type of glial cell that results in a myelin coating. - CORRECT ANSWER-false
T or F: Insulin is a ligand - CORRECT ANSWER-true
T or F: Vitamin D causes the parathyroid to inhibit new PTH synthesis - CORRECT
ANSWER-true
T or F: When the Sympathetic nervous system is triggered glycogen is broken down to
glucose to provide more energy. - CORRECT ANSWER-true
T or F: Insulin is produced by alpha cells - CORRECT ANSWER-false, beta cells
,T or F: The Parasympathetic Nervous System is triggered is trigger to act by exposure
to epinephrine. - CORRECT ANSWER-false
T or F: The partial pressure of oxygen in the lungs causes it to load into the circulatory
system.
True - CORRECT ANSWER-true
There is a reserve of oxygen in muscles held by - CORRECT ANSWER-myoglobin
T or F: The left ventricle contains more muscle - CORRECT ANSWER-true
T or F: The blood flow slows down in the capillaries because the increased total area of
the capillary is very large. - CORRECT ANSWER-true
T or F: Veins and venueles have valves in them, but arteries and arterioles do not. -
CORRECT ANSWER-true
T or F:The two circuits in the heart and the cardiovascular system have the same blood
pressure. - CORRECT ANSWER-false
T or F: The lungs have increased surface area to increase the movement of oxygen into
the circulatory system. - CORRECT ANSWER-true
T or F: Nutrients and oxygen can leave the arteries and arterioles to reach the cells. -
CORRECT ANSWER-false
T or F: the pulmonary artery contains oxygenated blood - CORRECT ANSWER-false
T or F: In capillaries the blood pressure pushes nutrients out of the capillaries towards
the cells. - CORRECT ANSWER-true
T or F: The oxygen in the circulatory system functions to bring oxygen to every cell of
the body so it can make ATP - CORRECT ANSWER-true
T or F:Surfactants is one of the later components made in the fetus (prior to birth). -
CORRECT ANSWER-true
T or F: Red blood cells carry co2 back to the lungs - CORRECT ANSWER-false
, The heart pace-maker that triggers the two atria to contract is the - CORRECT
ANSWER-sinoatrial node
T or F: The inspiratory and the expiratory reserves make up the total volume in the
lungs. - CORRECT ANSWER-false
T or F: The excretory system uses oxygen because oxygen diffuses more rapidly into
the excretory system because it contains water in the urine. - CORRECT
ANSWER-false
T or F: The atrioventricular node fires after the sinoatrial node - CORRECT
ANSWER-true
T or F: When the ventricles contract blood is pushed out into the artery and the artery
stretches because of its elastic layers allowing the blood to continue to flow into the
circulatory system while the ventricle is relaxing. - CORRECT ANSWER-true
T or F: The slow flow of blood in the capillaries facilitates the production of bicarbonates
in the blood. - CORRECT ANSWER-true
T or F: The medulla of the kidney secretes epinephrine - CORRECT ANSWER-false
T or F: the kidney filters about 180 liters of blood per day - CORRECT ANSWER-true
T or F: the functional unit of the kidneys is the nephron - CORRECT ANSWER-true
T or F:The inter-weaving of the circulatory system with the nephron is essential for the
concentration of urea in the urine. - CORRECT ANSWER-true
T or F: the bowmans capsule is the beginning of the nephron - CORRECT
ANSWER-true
T or F: Toxins including urea (in mammals) is driven out of the glomerulus into the
Bowman's capsule. - CORRECT ANSWER-true
T or F: each kidney contains about one million nephrons - CORRECT ANSWER-true
T or F: Efferent arterioles enter the Bowman's capsule and afferent arterioles leave the
Bowman' s capsule. - CORRECT ANSWER-false
2024
T or F: Potassium ions are at high concentrations inside of cells, including neurons -
CORRECT ANSWER-True
The action potential is a result of: - CORRECT ANSWER-the movement of ions
The post-synaptic cell can be: - CORRECT ANSWER-in glands, muscle cells and
neurons
Th resting potential of a neuron is - CORRECT ANSWER--60mV
T or F: The cell body refers to the part of the neurons that begin at the dendrites and
extend to the axon terminal - CORRECT ANSWER-false
T or F: Voltage gated ion channels open when a protein binds to the receptor -
CORRECT ANSWER-false
T or F: Excitatory synapses cause hyperpolarization of post-synaptic cells - CORRECT
ANSWER-false
T or F: Acetylcholinesterase breaks acetylcholine into muscarinic acid - CORRECT
ANSWER-false
In the motor end plate, the event that is the immediate trigger for exocytosis is -
CORRECT ANSWER-calcium ions
T or F: Fast Neurons as described in lecture require cytoplasmic signal transduction to
open an ion channel. - CORRECT ANSWER-False
T or F: Only pre-synaptic neurons are coated with myelin. - CORRECT ANSWER-False
T or F: When the presynaptic cell contacts a muscle cell, the synapse area is called a
motor end plate. - CORRECT ANSWER-True
T or F: Receptors are made from membrane-bound polyribosomes. - CORRECT
ANSWER-True
,The terminal web: - CORRECT ANSWER-is a site of exocytosis
T or F: Excitatory synapses cause depolarization of the post-synaptic cell - CORRECT
ANSWER-True
T or F: The membrane potential (resting potential) is largely set by the Na-K- ATPase
pump. - CORRECT ANSWER-true
The neural tissues are: - CORRECT ANSWER-spinal cord, sensory neurons and brain
T or F: the axon from a pre-synaptic cell contacts the axon of another neuron -
CORRECT ANSWER-false
T or F: The receptors in post-synaptic cells are the basis on which the synapse can be
defined as inhibitory or excitatory - CORRECT ANSWER-false
4 types of glial cells - CORRECT ANSWER-schwann, oligodendrocytes, astrocytess
and microglia
T or F: The axon hillock in the pre-synaptic neuron fires based on temporal and spatial
summation of inputs - CORRECT ANSWER-true
The central nervous contains - CORRECT ANSWER-spinal column and brain
T or F: Acetylcholine exocytosed from the presynaptic cell travels to the postsynaptic
cell to start the action potential in the postsynaptic cell. - CORRECT ANSWER-true
T or F: Fast neurons as described in lecture are fast because they are surrounded by a
type of glial cell that results in a myelin coating. - CORRECT ANSWER-false
T or F: Insulin is a ligand - CORRECT ANSWER-true
T or F: Vitamin D causes the parathyroid to inhibit new PTH synthesis - CORRECT
ANSWER-true
T or F: When the Sympathetic nervous system is triggered glycogen is broken down to
glucose to provide more energy. - CORRECT ANSWER-true
T or F: Insulin is produced by alpha cells - CORRECT ANSWER-false, beta cells
,T or F: The Parasympathetic Nervous System is triggered is trigger to act by exposure
to epinephrine. - CORRECT ANSWER-false
T or F: The partial pressure of oxygen in the lungs causes it to load into the circulatory
system.
True - CORRECT ANSWER-true
There is a reserve of oxygen in muscles held by - CORRECT ANSWER-myoglobin
T or F: The left ventricle contains more muscle - CORRECT ANSWER-true
T or F: The blood flow slows down in the capillaries because the increased total area of
the capillary is very large. - CORRECT ANSWER-true
T or F: Veins and venueles have valves in them, but arteries and arterioles do not. -
CORRECT ANSWER-true
T or F:The two circuits in the heart and the cardiovascular system have the same blood
pressure. - CORRECT ANSWER-false
T or F: The lungs have increased surface area to increase the movement of oxygen into
the circulatory system. - CORRECT ANSWER-true
T or F: Nutrients and oxygen can leave the arteries and arterioles to reach the cells. -
CORRECT ANSWER-false
T or F: the pulmonary artery contains oxygenated blood - CORRECT ANSWER-false
T or F: In capillaries the blood pressure pushes nutrients out of the capillaries towards
the cells. - CORRECT ANSWER-true
T or F: The oxygen in the circulatory system functions to bring oxygen to every cell of
the body so it can make ATP - CORRECT ANSWER-true
T or F:Surfactants is one of the later components made in the fetus (prior to birth). -
CORRECT ANSWER-true
T or F: Red blood cells carry co2 back to the lungs - CORRECT ANSWER-false
, The heart pace-maker that triggers the two atria to contract is the - CORRECT
ANSWER-sinoatrial node
T or F: The inspiratory and the expiratory reserves make up the total volume in the
lungs. - CORRECT ANSWER-false
T or F: The excretory system uses oxygen because oxygen diffuses more rapidly into
the excretory system because it contains water in the urine. - CORRECT
ANSWER-false
T or F: The atrioventricular node fires after the sinoatrial node - CORRECT
ANSWER-true
T or F: When the ventricles contract blood is pushed out into the artery and the artery
stretches because of its elastic layers allowing the blood to continue to flow into the
circulatory system while the ventricle is relaxing. - CORRECT ANSWER-true
T or F: The slow flow of blood in the capillaries facilitates the production of bicarbonates
in the blood. - CORRECT ANSWER-true
T or F: The medulla of the kidney secretes epinephrine - CORRECT ANSWER-false
T or F: the kidney filters about 180 liters of blood per day - CORRECT ANSWER-true
T or F: the functional unit of the kidneys is the nephron - CORRECT ANSWER-true
T or F:The inter-weaving of the circulatory system with the nephron is essential for the
concentration of urea in the urine. - CORRECT ANSWER-true
T or F: the bowmans capsule is the beginning of the nephron - CORRECT
ANSWER-true
T or F: Toxins including urea (in mammals) is driven out of the glomerulus into the
Bowman's capsule. - CORRECT ANSWER-true
T or F: each kidney contains about one million nephrons - CORRECT ANSWER-true
T or F: Efferent arterioles enter the Bowman's capsule and afferent arterioles leave the
Bowman' s capsule. - CORRECT ANSWER-false
