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Lecture Exam 2 (B)

Navigation   » List of Schools  »  West Los Angeles College  »  Physiology  »  Physiology 101 – Introduction to Human Physiology  »  Fall 2020  »  Lecture Exam 2 (B)

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Below are the questions for the exam with the choices of answers:

Question #2
A  They receive synaptic input from other neurons in the CNS.
B  They deliver synaptic input on other neurons.
C  They can transmit information between afferent neurons and efferent neurons.
D  They sum excitatory and inhibitory synaptic inputs.
E  They make synapses on effector organs in the PNS.
Question #3
A  The repolarization phase of the action potential
B  All of these will not occur
C  The graded potential
D  The exocytosis of neurotransmitter
E  The depolarization phase of the action potential
Question #7
A  Somatosensory cortex
B  Parietal lobe association area
C  Occipital lobe association area
D  Primary Visual cortex
E  Primary Auditory cortex
Question #8
A  dilation of the pupil.
B  flatteningof the lens.
C  increased rounding of the cornea.
D  contraction of the ciliary muscles.
E  activation of the sympathetic nervous system.
Question #10
A  Vision
B  Sound
C  pain
D  Pressure
E  Cold and warmth
F  Proprioception
Question #11
A  trigger an excitatory postsynaptic potential.
B  cause a change in membrane potential.
C  be conducted to the axon hillock.
D  depolarize a dendrite.
E  trigger an action potential.
Question #12
A  Retraction
B  Deflection
C  Reflection
D  Refraction
Question #13
A  Myopia is a condition in which the lens focuses light from distant objects behind the retina.
B  Cataract is an increase in opacity (clouding) of the lens.
C  Presbyopia is a condition in which the lens cannot accommodate adequately for near vision.
D  The image of an object that is focused on the retina is upside down relative to the object’s actual position in space.
E  The cornea refracts light rays more strongly than the lens.
Question #14
A  globus pallidus
B  substantia nigra
C  putamen
D  cingulate gyrus
E  mammilary body
F  caudate nucleus
Question #15
A  both pens are activating the same receptor.
B  both afferent neurons converge on the same interneuron.
C  the receptors in both skin areas utilize the same afferent neuron.
D  both sensations are grouped together in the somatosensory cortex.
Question #16
A  carry impulses from the periphery to the CNS.
B  transmit signals derived from afferent receptors up the spinal cord to the brain.
C  are part of the peripheral nervous system.
D  carry impulses from the CNS to the periphery.
E  relay messages from the brain down to the spinal cord to efferent neurons.
Question #17
A  inhibits muscle tone throughout the body.
B  functions as the body’s thermostat
C  is a relay station for sensory input on its way to the cerebral cortex.
D  controls thirst, urine output, and food intake.
E  plays a role in emotional and behavioral patterns.
F  secretes hormones
Question #19
A  is comprised of lower motor neurons controlled by upper motor neurons arising from the motor cortex
B  occurs in unmyelinated nerve fibers.
C  always results in muscle contraction
D  is comprised of lower motor neurons controlled by local circuit neurons
E  is comprised of lower motor neurons controlled by local circuit neurons and upper motor neurons arising from the cerebellum
Question #20
A  acetylcholine
B  histamine
C  norepinephrine
D  serotonin
Question #21
A  dopamine
B  acetylcholine
C  serotonin
D  histamine
Question #22
A  histamine
B  norepinephrine
C  serotonin
D  acetylcholine
Question #23
A  acetylcholine
B  dopamine
C  histamine
D  norepinephrine
Question #24
A  serotonin
B  acetylcholine
C  dopamine
D  norepinephrine
Question #25
A  Information from sensory receptorsreaches the cerebral cortex and the person becomes aware of it
B  A decrease in receptor sensitivity despite continuation of a stimulus
C  Conversion of the energy of a stimulus into a pattern of electrical activity
D  A depolarization of receptive membrane that increase in magnitude as the stimulus intensity increases
E  Persistence of the sensation of a limb even after it has been severed from the body
Question #26
A  thermoreceptor
B  photoreceptor
C  chemoreceptor
D  nociceptor
Question #27
A  mechanoreceptor
B  chemoreceptor
C  thermoreceptor
D  nociceptor
Question #28
A  photoreceptor
B  chemoreceptor
C  nociceptor
D  thermoreceptor
Question #29
A  thermoreceptor
B  mechanoreceptor
C  photoreceptor
D  chemoreceptor
Question #30
A  photoreceptor
B  thermoreceptor
C  chemoreceptor
D  nociceptor
Question #31
A  nociceptor
B  thermoreceptor
C  photoreceptor
D  chemoreceptor
Question #32
A  Chemoreceptors can activate heat sensing parts of the brain.
B  The breakdown of chemicals within the pepper causes exothermic reactions in the mouth.
C  Friction while chewing activates thermoreceptors.
D  A chemical within the jalepeño acts as a stimulus for thermoreceptors.
E  All of the answer choices are correct.
Question #33
A  There are four different opsins in the retina.
B  There are two basic types of photoreceptors in the retina, rods, and cones.
C  Photoreceptors are neurons.
D  There are normally four different photopigments in the retina.
E  There are four different chromophore moleculesin the retina.
Question #34
A  spinocerebellar tract
B  medial leminscus tract
C  the posterior column
D  anterior spinothalmic tract
E  lateral corticospinal tract
Question #35
A  somatosensory cortex
B  frontal lobes of the cerebral cortex
C  temporal lobes of the cerebral cortex
D  limbic system
E  occipital lobes of the cerebral cortex
Question #36
A  Na+/K+ pumps.
B  Na+ leak channels
C  K+ leak channels.
D  Na+ voltage-gated channels.
Question #38
A  Some sensory receptors are modifications of the peripheral endings of efferent neurons.
B  All sensory information that reaches the brain can be experienced as a conscious sensation.
C  Sensory information that leads to conscious awareness of the stimulus is called transduction.
D  The term “sensory unit” refers to a group of receptors that receive a particular stimulus and the afferent neuron associated with those receptors.
E  The term “adequate stimulus” means that a stimulus is strong enough to be detected.
Question #39
A  thermoreceptor
B  chemoreceptor
C  photoreceptor
D  mechanoreceptor
Question #40
A  slightly more negative than the equilibrium potential of potassium ion.
B  more positive than the equilibrium potential for sodium.
C  equal to the equilibrium potential for potassium.
D  equal to the equilibrium potential for sodium.
E  more positive than the equilibrium potential for potassium.
Question #42
A  Long parasympathetic preganglionic fibers end at the terminal ganglia, which lie in or near the effector organ.
B  the otic ganglia are found near the parotid gland
C  Terminal ganglia are the final common pathway for the autonomic nervous system.
D  Terminal ganglia lie in a chain located along either side of the spinal cord.
E  The terminal ganglia contain muscarinic receptors.
F  Terminal ganglia give rise to sympathetic neurons
Question #43
A  The patient would perceive a general sensation over one side of the body.
B  The patient would perceive nothing.
C  The patient would perceive a general sensation all over the body.
D  The patient would perceive a specific, localized sensation in one body area.
Question #44
A  Pineal gland
B  Hypothalamus
C  Pituitary gland
D  Mitochondria
Question #45
A  Both near and distance vision are fine, but changing back and forth between them becomes difficult
B  No light will enter the eye and blindness will result
C  Near vision (e.g., reading a book)
D  Both near and distance vision are compromised
E  Distance vision (e.g., reading a street sign)
Question #46
A  It transports equal numbers of sodium and potassium ions with each pump cycle.
B  It maintains a concentration gradient for K + such that diffusion forces favor movement of K + into the cell.
C  It generates a small electrical potential such that the inside of a neuron is made negative with respect to the outside.
D  It maintains an electrical gradient at the equilibrium potential of K +.
E  It pumps 3 Na + ions into the cell for every 2 K + ions it pumps out.
Question #47
A  It has the same value in all cells.
B  It requires ions to be distributed unevenly across the plasma membrane of a cell.
C  in neurons, it is created mainly by potassium ion leakage
D  It is oriented so that the cell’s interior is negative with respect to the extracellular fluid.
E  Only nerve and muscle cells have a potential difference across the membrane at rest.
F  It is not altered by changing concentration gradients of permeating ions.
Question #48
A  gamma motor neurons
B  nictonic motor neurons
C  lower motor neurons
D  delta motor neurons
E  upper motor neurons
Question #49
A  cingulate gyrus.
B  amygdala.
C  mammillary body.
D  primary visual cortex
E  olfactory bulb
F  hippocampus.
Question #50
A  They always trigger action potentials.
B  They can be graded and vary with stimulus strength.
C  They generally occur at the axon hillock of afferent neurons.
D  They are action potentials.
E  They propagate without decrement.
Question #52
A  is where action potentials are first generated.
B  is found in the soma of the neuron
C  contains voltage-gated channels.
D  is located in the axon hillock.
E  contains ligand-gated channels
Question #55
A  The plasma membrane is most permeable to sodium ions.
B  The permeability of the plasma membrane to potassium ions is much greater than its permeability to sodium ions.
C  The plasma membrane is completely impermeable to potassium ions.
D  The concentration of sodium ion is greater inside the cell than outside.
E  The plasma membrane is completely impermeable to sodium ions.
Question #56
A  glaucoma.
B  hyperopia.
C  cataract.
D  myopia.
E  presbyopia.
Question #58
A  are replaced by cells known as basal cells.
B  when stimulated send impulses both to the limbic system and to the cortex for perception of smell.
C  are specialized endings of afferent neurons called chemoreceptors
D  bind chemicals called odorants
Question #60
A  is important for the maintenance of balance.
B  can be consciously controlled.
C  plays a role in controlling eye movement together with the inner ear.
D  contains numerous nuclei connected by a network of white matter tracts.
E  compares the intentions of the higher motor centers with the performance of the muscles and corrects this information resulting in coordinated muscle movements
Question #61
A  activation of her sympathetic nerves inhibits contraction of her ciliary muscles.
B  she suddenly develops presbyopia.
C  activation of her parasympathetic nerves causes sudden contraction of her ciliary muscles.
D  activation of her sympathetic nerves causes sudden contraction of her ciliary muscles.
E  activation of her parasympathetic nerves inhibits contraction of her ciliary muscles.
Question #62
A  they are part of the final common pathway
B  they can excite or inhibit skeletal muscles
C  they are also known as somatic motor neurons
D  they secrete dopamine
E  their activity is influenced by upper motor neurons
F  they exit from the anterior gray horn
Question #63
A  bleaching of opsin.
B  closure of Na+ channels and decreased Na+ flow into the photoreceptor
C  increased neurotransmitter release from the synaptic terminal of the photoreceptor.
D  decreased depolarization of the photoreceptor’s plasma membrane
E  excitation of bipolar cells
Question #64
A  afferent, sensory neurons are unipolar neurons with cell bodies located in the dorsal root ganglion
B  spinal nerves are for the conduction of motor information only
C  the dorsal root conducts motor information
D  the ventral root contains axons of afferent, sensory neurons
Question #65
A  bind acetylcholine released from both sympathetic and parasympathetic postganglionic fibers.
B  bind acetylcholine released from parasympathetic preganglionic fibers.
C  bind with norepinephrine released from sympathetic postganglionic fibers.
D  bind acetylcholine released from both sympathetic and parasympathetic preganglionic fibers.
E  are found primarily in the heart.
Question #66
A  Mechanoreceptors
B  Nociceptors
C  Chemoreceptors
D  Proprioceptors
E  Photoreceptors
Question #67
A  The photoreceptor cells are stimulated and fireaction potentials.
B  The concentration of cyclic GMP inside cells increases.
C  The chromophore retinal undergoes a change of shape.
D  The photoreceptor cell membranebecomes depolarized.
E  There is an increase in neurotransmitter release from photoreceptor cells.
Question #68
A  Loss of pain in the left foot
B  Loss of pain in the right foot
C  Loss of both pressure sense and pain in the right foot
Question #69
A  movement of the tectorial membrane relative to the vestibular
B  displacement of the round window, which dissipates pressure in the cochlea.
C  increased fluid pressure against the cochlear duct by the fluid of the scala vestibuli
D  movement of the basilar membrane relative to the tectorial.
E  the hairs of the receptor cells of the Organ of Corti to be bent