BIOL 252 Final Exam - Quiz Review
Questions With Correct Detailed
Answers
Local potentials follow the "all or nothing" principle where they happen completely or not at all.
True
False - ✔✔✔✔Correct answer: FALSE
Neurotransmitters are released from the presynaptic neuron and bind to postsynaptic neurons (or other
target cells).
True
False - ✔✔✔✔Correct answer: TRUE
Which of the following is the most prevalent extracellular cation?
A. Sodium
B. Chloride
C. Potassium
D. Magnesium - ✔✔✔✔A: SODIUM
Your niece touches the hot pan on your stove. Which division of the nervous system sends the signal to
the brain that she has done something painful?
A. Somatic motor division
B. Somatic sensory division
C. Visceral motor division
D. Visceral sensory division - ✔✔✔✔B: SOMATIC SENSORY DIVISION
Which of the following is true of the absolute refractory period?
, A. An action potential can occur but requires a larger stimulus
B. The membrane is hyperpolarized
C. Voltage-gated sodium channels are either open or inactive - ✔✔✔✔C. VOLTAGE-GATED SODIUM
CHANNELS ARE EITHER OPEN OR INACTIVE
A bacteria in a patients blood escapes into the tissue of the brain. What glial cell has failed to do its job
in this situation?
A. Oligoendrocytes
B. Schwann cells
C. Astrocytes
D. Ependymal cells - ✔✔✔✔C. ASTROCYTES
IPSP's are more likely to trigger an action potential than EPSP's
True
False - ✔✔✔✔Correct answer: FALSE
The peripheral nervous system contains all components of the nervous system except the
A. Spinal nerves
B. Brain
C. Spinal cord
D. Cranial nerves - ✔✔✔✔B. BRAIN
C. SPINAL CORD
What process best defines what occurs in the brain to make sense of a signal from the periphery and
then direct response/reaction?( i.e. where the brain is made aware that you've been poked in the eye
and decides to blink)
A. Integration
B. Motor commands
C. Sensory input - ✔✔✔✔A. INTEGRATION
Questions With Correct Detailed
Answers
Local potentials follow the "all or nothing" principle where they happen completely or not at all.
True
False - ✔✔✔✔Correct answer: FALSE
Neurotransmitters are released from the presynaptic neuron and bind to postsynaptic neurons (or other
target cells).
True
False - ✔✔✔✔Correct answer: TRUE
Which of the following is the most prevalent extracellular cation?
A. Sodium
B. Chloride
C. Potassium
D. Magnesium - ✔✔✔✔A: SODIUM
Your niece touches the hot pan on your stove. Which division of the nervous system sends the signal to
the brain that she has done something painful?
A. Somatic motor division
B. Somatic sensory division
C. Visceral motor division
D. Visceral sensory division - ✔✔✔✔B: SOMATIC SENSORY DIVISION
Which of the following is true of the absolute refractory period?
, A. An action potential can occur but requires a larger stimulus
B. The membrane is hyperpolarized
C. Voltage-gated sodium channels are either open or inactive - ✔✔✔✔C. VOLTAGE-GATED SODIUM
CHANNELS ARE EITHER OPEN OR INACTIVE
A bacteria in a patients blood escapes into the tissue of the brain. What glial cell has failed to do its job
in this situation?
A. Oligoendrocytes
B. Schwann cells
C. Astrocytes
D. Ependymal cells - ✔✔✔✔C. ASTROCYTES
IPSP's are more likely to trigger an action potential than EPSP's
True
False - ✔✔✔✔Correct answer: FALSE
The peripheral nervous system contains all components of the nervous system except the
A. Spinal nerves
B. Brain
C. Spinal cord
D. Cranial nerves - ✔✔✔✔B. BRAIN
C. SPINAL CORD
What process best defines what occurs in the brain to make sense of a signal from the periphery and
then direct response/reaction?( i.e. where the brain is made aware that you've been poked in the eye
and decides to blink)
A. Integration
B. Motor commands
C. Sensory input - ✔✔✔✔A. INTEGRATION
