Navigation » List of Schools » Prince George Community College » Biology » Bio 2050 – Anatomy and Physiology » Spring 2021 » Lecture Exam 3
Below are the questions for the exam with the choices of answers:
Question #1
A bundle of macromolecules in nerve cells
B axon
C nerve cell
D organ
E organelle in nerve cells
Question #2
A D, B, C, E, A
B B, D, C, A, E
C B, C, D, E, A
D D, B, E, A, C
Question #3
A All dendrites intact
B At least part of the neurosoma intact
C The neurosoma and at least some neurilemma intact
D At least the entire axon and neurilemma intact
E At least half the length of the fiber intact
Question #4
A Repolarization of the membrane
B A local potential develops
C A resting membrane potential is established
D Threshold is reached
E Hyperpolarization of the membrane
Question #5
A reaching the threshold
B exiting the threshold
C hyperpolarizing
D repolarizing
E depolarizing
Question #6
A Nodes of Ranvier
B Satellite cells
C Oligodendrocytes
D Ependymal cells
E Schwann cells
Question #7
A FALSE
B TRUE
Question #8
A TRUE
B FALSE
Question #9
A Secretion
B Excitablity
C Conductivity
D Permeability
Question #10
A chloride; IPSP
B sodium; IPSP
C potassium; EPSP
D calcium; IPSP
E calcium and sodium; IPSP
Question #11
A The resting membrane potential is reinstated
B Hyperpolarization of the membrane
C Hypopolarization of the membrane
D Depolarization of the membrane
E Threshold is reached
Question #12
A Visceral motor division
B Somatic sensory division
C Visceral sensory division
D Somatic motor division
E Central nervous system
Question #13
A Active transport of sodium and potassium is faster in myelinated fibers.
B There are no internodes in unmyelinated fibers.
C There are more internodes in unmyelinated fibers.
D Diffusion of ions along the axoplasm is faster.
E Facilitated diffusion of sodium and potassium is faster in myelinated fibers.
Question #14
A afferent
B visceral sensory
C somatic sensory
D visceral motor
E somatic motor
Question #15
A FALSE
B TRUE
Question #16
A It would become more negative.
B It would hyperpolarize.
C It would become more positive.
D The RMP would be unaffected.
Question #17
A TRUE
B FALSE
Question #18
A Along microtubules
B By diffusion
C Through co-transport
D Via cytoplasmic streaming
Question #19
A proteins
B carbohydrates
C glycoproteins
D lipids
E polysaccharides
Question #20
A Drifting of the membrane potential towards the resting membrane potential
B Hyperpolarization of the plasma membrane
C Repolarization of the plasma membrane
D Neutralization of the plasma membrane
E Depolarization of the plasma membrane
Question #21
A somatic motor
B sensory afferent
C motor afferent
D sympathetic
E parasympathetic
Question #22
A The axon hillock
B The axon
C The dendrites
D The Schwann cell
E The neurosoma
Question #23
A Sodium ions are entering the cells
B Both sodium and potassium ions are leaving the cell
C Potassium ions are entering the cell
D Potassium ions are leaving the cell
E Sodium ions are leaving the cell
Question #24
A A voltage change from 0 mV to +0.35 mV
B A voltage change from -70 mV to -69.5 mV
C A voltage change from -70 mV to -70.5 mV
D A voltage change from +35 mV to 0 mV
E A voltage change from -69.5 mV to -70 mV
Question #25
A Down the entire length of an unmyelinated fiber
B Down the entire length of a myelinated fiber
C From node to node in unmyelinated fibers
D From node to node in myelinated fibers
Question #26
A The axon collaterals
B The neurosomas
C The axon terminals
D The axons
E The dendrites
Question #27
A organs
B organelles
C cells
D organ systems
E tissues
Question #28
A they alter the physiology of the postsynaptic cell
B they are released in response to stimulation
C they are synthesized by a presynaptic neuron
D they bind to specific receptors on the postsynaptic cell
E they are released into the bloodstream before reaching the postsynaptic cell
Question #29
A chloride gates are fully open
B potassium gates are fully open
C chloride gates are partially open
D sodium gates are partially open
E sodium gates are fully open
Question #30
A neural summation
B neuronal coding
C temporal summation
D spatial summation
E recruitment
Question #31
A TRUE
B FALSE
Question #32
A A Schwann cell folds its plasma membrane around several fibers .
B An oligodendrocyte cells wraps its plasma membrane around each fiber as it does with myelinated fibers.
C A Schwann cells wraps its plasma membrane around each individual fiber as it does with myelinated fibers.
D Satellite cells cluster around each axon to form a pseudo-myelin sheath.
Question #33
A Synaptic vesicles secrete neurotransmitter by exocytosis.
B Enzymes in the postsynaptic cell break down some neurotransmitters.
C Neurotransmitters are no longer released.
D Neurotransmitter escapes from the synapse into the nearby extracellular fluid.
E The axon terminal reabsorbs some neurotransmitters by endocytosis.
Question #34
A The nervous system releases neurotransmitters between cells, while the endocrine system releases hormones into the blood.
B The nervous system releases hormones between cells, while the endocrine system releases neurotransmitters into the blood.
C The nervous system releases hormones into the blood, while the endocrine system releases neurotransmitters between cells.
D The nervous system releases neurotransmitters into the blood, while the endocrine system releases hormones between cells.
Question #35
A TRUE
B FALSE
Question #36
A TRUE
B FALSE
Question #37
A TRUE
B FALSE
Question #38
A Somatic receptor → efferent nerve fiber → interneuron → afferent nerve fiber → skeletal muscle
B Somatic receptor → afferent nerve fiber → interneuron → efferent nerve fiber → skeletal muscle
C Somatic receptor → efferent nerve fiber → afferent nerve fiber → interneuron → skeletal muscle
D Somatic receptor → afferent nerve fiber → interneuron → efferent nerve fiber → smooth muscle
Question #39
A nociceptors
B pain receptors
C proprioceptors
D chemoreceptors
E visceral receptors
Question #40
A TRUE
B FALSE
Question #41
A FALSE
B TRUE
Question #42
A anterior column
B posterior root ganglion
C anterior horn
D posterior horn
E posterior column
Question #43
A posterior horn
B spinal nerve
C anterior root of a spinal nerve
D anterior horn
E posterior root of a spinal nerve
Question #44
A TRUE
B FALSE
Question #45
A crossed extension
B flexor (withdrawal)
C tendon
D painful
E stretch
Question #46
A Smell
B Touch
C Taste
D Hearing
E Vision
Question #47
A 31
B 12
C 35
D 24
E 62
Question #48
A A fracture of vertebra C2
B A fracture of vertebra C6
C A fracture of vertebra T12
D A fracture of vertebra T5
E A fracture of vertebra L4
Question #49
A nerve; axons
B nerve; neurosomas
C nerve fiber; nerves
D nerve fiber; neurosomas
E nerve fiber; axons
Question #50
A Reflexes do not require a stimulus.
B Reflexes are not voluntary.
C Reflexes are responses to sensory inputs.
D Reflexes are quick responses of the nervous system.
E Reflex responses are very predictable.