Navigation » List of Schools » West Los Angeles College » Physiology » Physiology 101 – Introduction to Human Physiology » Fall 2020 » Lecture Exam 2 (B)
Below are the questions for the exam with the choices of answers:
Question #1
A 1, 4, 7, 2, 3, 6, 9, 8, 5
B 1, 4, 7, 2, 3, 9, 6, 5, 8
C 1, 7, 4, 6, 3, 2, 9, 8, 5
D 1, 4, 2, 3, 5, 6, 9, 8, 7
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 #4
A bipolar, ganglion
B somatic, catalyst
C horizontal, inner
Question #5
A White, Gray
B Black, White
C Brown, Gray
D Gray, White
Question #6
A TRUE
B FALSE
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 #9
A 1,4,7,8,3,2,6,5,9,10
B 1,4,8,7,3,2,5,6,9,10
C 1,3,2,6,5,9,10,4,8,7
D 1,3,2,5,7,6,8,4,9,10
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 #18
A cornea
B ciliary muscle
C lens
D iris
E retina
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 #37
A sympathetic
B parassympathetic
C assympathetic
D parasympathetic
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 #41
A 3, 1, 4, 5, 2
B 2, 1, 5, 4, 3
C 1, 2, 3, 5, 4
D 5, 4, 3, 1, 2
E 1, 4, 3, 2, 5
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 #51
A FALSE
B TRUE
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 #53
A FALSE
B TRUE
Question #54
A muscarinic
B nicotinic
C adrenergic
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 #57
A FALSE
B TRUE
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 #59
A TRUE
B FALSE
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