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HUBS1416 EXAM 1 QUESTIONS AND 100% CORRECT ANSWERS
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HUBS1416 EXAM 1 QUESTIONS AND 100%CORRECT ANSWERS
Which of the following is caused by a bacterium?
Answers:
A) Athlete's foot
B) Ringworm
C) Influenza
D) Anthrax - ANSWER D) Anthrax
How does the interior surface of a cell membrane of a neuron differ from the external
surface when the neuron is at rest?
Answers:
A) The interior surface is negatively charged and has fewer sodium ions
B) The interior surface is positively charged and has fewer sodium ions
C) The inside surface is negatively charged and has more of the sodium ions
D) The inside surface is positively charged and has more of the sodium ions - ANSWER
A) The inside surface is negatively charged and has fewer sodium ions
,Immediately after an action potential has fired and has passed, which channels open to
allow the membrane potential to return to normal or repolarise?
Answers:
A) Chloride
B) Sodium
C) Potassium
D) Calcium - ANSWER C) Potassium
What does the neuron cell body do?
Answers:
A) Neurotransmitters are released
B) Myelin sheaths for the axon are manufactured
C) The cell body receives and integrates information from other neurons
D) Action potentials are generated and transmitted to the axon terminal - ANSWER C)
Receive and integrate information from other neurons
Which of the following is the correct order for a simple spinal reflex arc?
Answers:
A) Effector, efferent neuron, integration centre, afferent neuron, receptor
,B) Receptor, efferent neuron, integration centre, afferent neuron, effector
C) Receptor, afferent neuron, integration centre, efferent neuron, effector
D) Effector, afferent neuron, integration centre, efferent neuron, receptor - ANSWER C)
Receptor, afferent neuron, integration centre, efferent neuron, effector
The sodium-potassium exchange pump:
Answers:
A) Requires ATP in order to function.
B) Moves sodium and potassium down their chemical gradients.
C) Transports sodium ions into the cell during depolarisation.
D) Translocates potassium ions out of the cell during repolarisation. - ANSWER A)
Requires ATP to function.
Which of the following is true regarding the Babinski reflex?
Answers:
A) Plantar flexion is a negative Babinski sign and is pathological in adults and infants
B) A negative babinski sign in an adult suggests that descending motor tracts or higher
centres which normally provide inhibition to spinal reflexes have been damaged
C) A positive Babinski sign in an adult is indicative of damage to descending motor
tracts or higher centres that normally provide inhibition to spinal reflexes.
, D) Plantar flexion is a positive Babinski sign and is normal in adults and infants -
ANSWER C) A positive Babinski sign in an adult is indicative of damage to descending
motor tracts or higher centres that normally provide inhibition to spinal reflexes.
A patient with damage to myelin would be expected to have neurological symptoms
because:
A) It would be impossible to maintain a membrane potential
B) An impulse could not be created
C) Impulse conduction could not be propagated
D) Neurotransmission could not occur ANSWER C) An inability to properly propagate
the impulse
Testing a reflex can provide information about:
A) The sensory neuron involved in the reflex
B) The motor neuron involved in the reflex
C) The central nervous system
D) All of the above - ANSWER D) All of the above
A man is brought into the emergency room after an accident in which he sustained
suspected damage to his spinal cord at the lumbar level. On preliminary testing, there
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