Navigation » List of Schools » West Los Angeles College » Physiology » Physiology 101 – Introduction to Human Physiology » Fall 2020 » Lecture Exam 2
Below are the questions for the exam with the choices of answers:
Question #1
A Persistence of the sensation of a limb even after it has been severed from the body
B Conversion of the energy of a stimulus into a pattern of electrical activity
C A decrease in receptor sensitivity despite continuation of a stimulus
D Information from sensory receptorsreaches the cerebral cortex and the person becomes aware of it
E A depolarization of receptive membrane that increase in magnitude as the stimulus intensity increases
Question #2
A FALSE
B TRUE
Question #3
A horizontal, inner
B bipolar, ganglion
C somatic, catalyst
Question #4
A retina
B iris
C lens
D ciliary muscle
E cornea
Question #5
A is a relay station for sensory input on its way to the cerebral cortex.
B plays a role in emotional and behavioral patterns.
C inhibits muscle tone throughout the body.
D controls thirst, urine output, and food intake.
E secretes hormones
F functions as the body’s thermostat
Question #6
A FALSE
B TRUE
Question #7
A contains voltage-gated channels.
B is where action potentials are first generated.
C is found in the soma of the neuron
D is located in the axon hillock.
E contains ligand-gated channels
Question #8
A They receive synaptic input from other neurons in the CNS.
B They deliver synaptic input on other neurons.
C They sum excitatory and inhibitory synaptic inputs.
D They make synapses on effector organs in the PNS.
E They can transmit information between afferent neurons and efferent neurons.
Question #9
A spinocerebellar tract
B lateral corticospinal tract
C the posterior column
D medial leminscus tract
E anterior spinothalmic tract
Question #10
A olfactory bulb
B hippocampus.
C amygdala.
D mammillary body.
E cingulate gyrus.
F primary visual cortex
Question #11
A TRUE
B FALSE
Question #12
A movement of the basilar membrane relative to the tectorial.
B increased fluid pressure against the cochlear duct by the fluid of the scala vestibuli
C displacement of the round window, which dissipates pressure in the cochlea.
D movement of the tectorial membrane relative to the vestibular
E the hairs of the receptor cells of the Organ of Corti to be bent
Question #13
A Primary Auditory cortex
B Occipital lobe association area
C Somatosensory cortex
D Primary Visual cortex
E Parietal lobe association area
Question #14
A the receptors in both skin areas utilize the same afferent neuron.
B both pens are activating the same receptor.
C both afferent neurons converge on the same interneuron.
D both sensations are grouped together in the somatosensory cortex.
Question #15
A trigger an action potential.
B be conducted to the axon hillock.
C trigger an excitatory postsynaptic potential.
D cause a change in membrane potential.
E depolarize a dendrite.
Question #16
A It generates a small electrical potential such that the inside of a neuron is made negative with respect to the outside.
B It maintains a concentration gradient for K + such that diffusion forces favor movement of K + into the cell.
C It pumps 3 Na + ions into the cell for every 2 K + ions it pumps out.
D It transports equal numbers of sodium and potassium ions with each pump cycle.
E It maintains an electrical gradient at the equilibrium potential of K +.
Question #17
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 ventral root contains axons of afferent, sensory neurons
D the dorsal root conducts motor information
Question #18
A The exocytosis of neurotransmitter
B The graded potential
C The repolarization phase of the action potential
D All of these will not occur
E The depolarization phase of the action potential
Question #19
A are part of the peripheral nervous system.
B relay messages from the brain down to the spinal cord to efferent neurons.
C transmit signals derived from afferent receptors up the spinal cord to the brain.
D carry impulses from the periphery to the CNS.
E carry impulses from the CNS to the periphery.
Question #20
A slightly more negative than the equilibrium potential of potassium ion.
B equal to the equilibrium potential for sodium.
C equal to the equilibrium potential for potassium.
D more positive than the equilibrium potential for potassium.
E more positive than the equilibrium potential for sodium.
Question #21
A Deflection
B Retraction
C Refraction
D Reflection
Question #22
A she suddenly develops presbyopia.
B activation of her parasympathetic nerves causes sudden contraction of her ciliary muscles.
C activation of her sympathetic nerves causes sudden contraction of her ciliary muscles.
D activation of her sympathetic nerves inhibits contraction of her ciliary muscles.
E activation of her parasympathetic nerves inhibits contraction of her ciliary muscles.
Question #23
A thermoreceptor
B photoreceptor
C mechanoreceptor
D chemoreceptor
Question #24
A nociceptor
B photoreceptor
C chemoreceptor
D thermoreceptor
Question #25
A mechanoreceptor
B nociceptor
C chemoreceptor
D thermoreceptor
Question #26
A chemoreceptor
B photoreceptor
C thermoreceptor
D nociceptor
Question #27
A mechanoreceptor
B thermoreceptor
C chemoreceptor
D photoreceptor
Question #28
A nociceptor
B photoreceptor
C thermoreceptor
D chemoreceptor
Question #29
A nociceptor
B photoreceptor
C thermoreceptor
D chemoreceptor
Question #30
A Hypothalamus
B Pituitary gland
C Pineal gland
D Mitochondria
Question #31
A stabilizes the membrane to remain at its resting potential.
B occurs when voltage-gated Cl- channels open in a postsynaptic cell membrane.
C opens voltage-gated Ca 2+ channels in the presynaptic membrane.
D is a direct result of the opening of ligand-gated channels permeable to both Na + and K + ions in the pre-synaptic cell
E is a direct result of the opening of voltage-gated channels permeable to Na + ions in the post-synaptic cell
Question #32
A The term “sensory unit” refers to a group of receptors that receive a particular stimulus and the afferent neuron associated with those receptors.
B Sensory information that leads to conscious awareness of the stimulus is called transduction.
C The term “adequate stimulus” means that a stimulus is strong enough to be detected.
D Some sensory receptors are modifications of the peripheral endings of efferent neurons.
E All sensory information that reaches the brain can be experienced as a conscious sensation.
Question #33
A can take up excess neurotransmitters
B produce the CSF
C are part of the blood-brain barrier.
D physically support neurons.
E produce myelin
F are important in the repair of brain injuries and in neural scar formation.
Question #34
A It has the same value in all cells.
B It is oriented so that the cell’s interior is negative with respect to the extracellular fluid.
C It is not altered by changing concentration gradients of permeating ions.
D in neurons, it is created mainly by potassium ion leakage
E It requires ions to be distributed unevenly across the plasma membrane of a cell.
F Only nerve and muscle cells have a potential difference across the membrane at rest.
Question #35
A serotonin
B norepinephrine
C histamine
D acetylcholine
Question #36
A acetylcholine
B serotonin
C dopamine
D histamine
Question #37
A norepinephrine
B serotonin
C acetylcholine
D histamine
Question #38
A dopamine
B histamine
C norepinephrine
D acetylcholine
Question #39
A acetylcholine
B norepinephrine
C dopamine
D serotonin
Question #40
A Proprioception
B Vision
C Cold and warmth
D Sound
E pain
F Pressure
Question #41
A they are also known as somatic motor neurons
B they are part of the final common pathway
C their activity is influenced by upper motor neurons
D they can excite or inhibit skeletal muscles
E they exit from the anterior gray horn
F they secrete dopamine
Question #42
A Na+ voltage-gated channels.
B K+ leak channels.
C Na+ leak channels
D Na+/K+ pumps.
Question #43
A Cataract is an increase in opacity (clouding) of the lens.
B Presbyopia is a condition in which the lens cannot accommodate adequately for near vision.
C The image of an object that is focused on the retina is upside down relative to the object’s actual position in space.
D The cornea refracts light rays more strongly than the lens.
E Myopia is a condition in which the lens focuses light from distant objects behind the retina.
Question #44
A Action potentials are usually initiated at the axon hillock of a neuron.
B Action potentials travel in both directions along the axon.
C An action potential generates a new action potential in an adjacent area of membrane.
D An action potential generates a local current that depolarizes adjacent membrane to threshold potential.
E An action potential generated by a threshold stimulus is the same size as one generated by a supra-threshold stimulus.
Question #45
A mammilary body
B substantia nigra
C caudate nucleus
D cingulate gyrus
E putamen
F globus pallidus
Question #46
A is comprised of lower motor neurons controlled by upper motor neurons arising from the motor cortex
B occurs in unmyelinated nerve fibers.
C is comprised of lower motor neurons controlled by local circuit neurons and upper motor neurons arising from the cerebellum
D always results in muscle contraction
E is comprised of lower motor neurons controlled by local circuit neurons
Question #47
A control of breathing, circulation, and digestion.
B
C language ability
D final sensory perception
E voluntary initiation of movement.
F personality traits.
Question #48
A gamma motor neurons
B upper motor neurons
C lower motor neurons
D nictonic motor neurons
E delta motor neurons
Question #49
A Gray, White
B White, Gray
C Brown, Gray
D Black, White
Question #50
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 bind chemicals called odorants
D are specialized endings of afferent neurons called chemoreceptors
Question #51
A myopia.
B presbyopia.
C hyperopia.
D glaucoma.
E cataract.
Question #52
A bind acetylcholine released from parasympathetic preganglionic fibers.
B bind acetylcholine released from both sympathetic and parasympathetic preganglionic fibers.
C bind acetylcholine released from both sympathetic and parasympathetic postganglionic fibers.
D bind with norepinephrine released from sympathetic postganglionic fibers.
E are found primarily in the heart.
Question #53
A They always trigger action potentials.
B They are action potentials.
C They generally occur at the axon hillock of afferent neurons.
D They propagate without decrement.
E They can be graded and vary with stimulus strength.
Question #54
A TRUE
B FALSE
Question #55
A Chemoreceptors
B Mechanoreceptors
C Proprioceptors
D Photoreceptors
E Nociceptors
Question #56
A muscarinic
B nicotinic
C adrenergic
Question #57
A contraction of the ciliary muscles.
B activation of the sympathetic nervous system.
C flatteningof the lens.
D increased rounding of the cornea.
E dilation of the pupil.
Question #58
A The concentration of cyclic GMP inside cells increases.
B The photoreceptor cell membranebecomes depolarized.
C The photoreceptor cells are stimulated and fireaction potentials.
D There is an increase in neurotransmitter release from photoreceptor cells.
E The chromophore retinal undergoes a change of shape.
Question #59
A occipital lobes of the cerebral cortex
B frontal lobes of the cerebral cortex
C limbic system
D temporal lobes of the cerebral cortex
E somatosensory cortex
Question #60
A The permeability of the plasma membrane to potassium ions is much greater than its permeability to sodium ions.
B The plasma membrane is most permeable to sodium ions.
C The plasma membrane is completely impermeable to sodium ions.
D The plasma membrane is completely impermeable to potassium ions.
E The concentration of sodium ion is greater inside the cell than outside.
Question #61
A TRUE
B FALSE
Question #62
A Both near and distance vision are fine, but changing back and forth between them becomes difficult
B Distance vision (e.g., reading a street sign)
C Near vision (e.g., reading a book)
D Both near and distance vision are compromised
E No light will enter the eye and blindness will result
Question #63
A 1,4,7,8,3,2,6,5,9,10
B 1,3,2,6,5,9,10,4,8,7
C 1,3,2,5,7,6,8,4,9,10
D 1,4,8,7,3,2,5,6,9,10
Question #64
A Terminal ganglia give rise to sympathetic neurons
B Terminal ganglia lie in a chain located along either side of the spinal cord.
C the otic ganglia are found near the parotid gland
D The terminal ganglia contain muscarinic receptors.
E Long parasympathetic preganglionic fibers end at the terminal ganglia, which lie in or near the effector organ.
F Terminal ganglia are the final common pathway for the autonomic nervous system.
Question #65
A 2, 1, 5, 4, 3
B 1, 4, 3, 2, 5
C 5, 4, 3, 1, 2
D 3, 1, 4, 5, 2
E 1, 2, 3, 5, 4