Exam 5 Flashcards
Which of the following compounds/neurotransmitter pairs is incorrect?
A. Curare – Acetylcholine
B. Nicotine – Serotonin
C. Nicotine – Dopamine
D. All of the pairs are correct
B. Nicotine – Serotonin
What is the primary ion that leads to the release of neurotransmitter during synpatic transmission?
A. Sodium
B. Potassium
C. Calcium
D. Chloride
C. Calcium
Which layer of the meninges is the outermost layer?
A. Pia mater
B. Dura mater
C. Arachnoid mater
D. None of the above
B. Dura mater
There are ___ spinal nerve pairs and they are classified as ___ nerves.
A. 31; sensory
B. 12 ; mixed
C. 31 ; mixed
D. 31 ; motor
C. 31 ; mixed
Descending nereve tract transmit ____ impulses, while ascending nerve trascts transmit ____ impulses.
A. sesnory; motor
B. motor; sensory
C. sensory; inegrative
D. integrative; motor
B. motor; sensory
Which of the following represents the term for several sub-threshold stimuli coming together to become a threhold stimulus?
A. Summation
B. All-or-None response
C. Nodes of Ranvier
D. Saltatory conduction
A. Summation
Which of the following neuroglial cells is involved with phagocytosis?
A. Astrocyte
B. Microglia
C. Schwann cells
D. Ependymal cells
B. Microglia
Conduction that occurs along myelinated nerve fibers is known as:
A. Nodes of Ranvier
B. Transmission
C. Saltatory Conduction
D. None of the above
B. Transmission
Threshold potential for a neuron is ___ and the threshold stimulus is ___
A. -55mv; +15mV
B. -70mv , -55mV
C. -55 mV , -70mV
D. -70mV , + 15mV
A. -55mv; +15mV
Which of the following is commonly referred to ask “efferent”?
A. Sensory neuron
B. Interneuron
C. Motor neuron
D. None of the above
C. Motor neuron
Which group of cells is responsible for production of myelin in the Peripheral Nervous System?
A. Schwann cells
B. Oligodendrocytes
C. Satellite cells
D. Astrocytes
A. Schwann cells
Which area of the brain is involved with regulation of respiration?
A. Medulla oblongata
B. Pons
C. Midbrain
D. Both a and B
D. Both a and B
Which of the following membrane transport mechanism(s) is vital for establishing and maintaining proper concentration gradients in a resting cell?
A. Diffusion
B. Facilitatd disffusion
C. Active transport
D. Both A and C
C. Active transport
Which area of the brain is involved with regulating muscle activity involved with balance and posture?
A. Brain stem
B. Cerebellum
C. Diencephalon
D. Cerebrum
B. Cerebellum
Which of the following is not present in the withdraw reflex?
A. Motor neuon
B. Interneuron
C. Sensory neuron
D. All are present
D. All are present
Which group of cells is reponsible for the production of myelin in the Central Nervous System?
A. Schwann cells
B. Oligodendrocytes
C. Satellite cells
D. Astrocytes
B. Oligodendrocytes
Which lobe of the brain is involved with interpreting general sensory information, such as touch, pain and temperature?
A. Occipital lobe
B. Frontal lobe
C. Parietal lobe
D. Temportal lobe
C. Parietal lobe
Which portion of the brain is involved with maintaining homeostasis through the control of the pituitary gland?
A. Midbrain
B. Medulla oblongata
C. Pons
D. Hypothalamus
D. Hypothalamus
Which of the following does not describe sensory neuron?
A. Carry impulses toward the Central Nervous System
B. Referred to as “afferent” neurons
C. Connect the Central Nervous System to the effectors
D. All of the above are correct
C. Connect the Central Nervous System to the effectors
Which of the following is a fate for neurotransmitter in the synapse?
A. Reabsorprtion for the pre-synatpic neuron
B. Degraded by the presence of an enzyme
C. Both A and B
D. None of the above
C. Both A and B
Which portion of the neuron is referred to as the “trigger zone” and is the site of action potential generation?
A. Axon
B. Axonal hillock
C. Dendrite
D. Axonal terminal
B. Axonal hillock
The neurotransmitters dopamine, epinephrine and norepinephrine are all derived from which of the following amino acids?
A. Hisadine
B. Tryptophan
C. Tyrosine
D. Alanine
C. Tyrosine
Which portion of a neuron is the receptive portion?
A. Cell body
B. Dendrites
C. Axon
D. Axonal hillock
B. Dendrites
Which of the following is the site of integration/interpretation?
A. Sensory neuron
B. Efferent neuron
C. Motor neuron
D. Interneuron
D. Interneuron
Which of the following is not part of the Central Nervous System?
A. Brain
B. Spinal nerves
C. Spinal cord
D. Ganglia of the Autonomic Nervous System
E. Both B and D
E. Both B and D
Which of the following separates the cerebrum from the cerebellum?
A. Transverse fissure
B. Longitudinal fissure
C. Central sulcus
D. Lateral sulcus
A. Transverse fissure
Which of the following principle is demonstrated by both the muscular and nervous system?
A. Summation
B. All or Nothing response
C. Refractory period
D. All of the above are seen in both systems
D. All of the above are seen in both systems
The ___ controls the muscle of speech, while ___ is involved with word selection and phrasing.
A. Wernicke’s area; Broca’s area
B. Broca’s area; amygdala
C. amygdala; Broca’s area
D. Broca’s area; Wernicke’s area
D. Broca’s area; Wernicke’s area
What is the site of cerebrospinal fluid (CSF) production?
A. Lateral ventricles
B. Chroid plexus
C. Temporal lobe
D. Subarachnoid space
B. Chroid plexus
Visual prceptions are generated at which of the following lobe?
A. Parietal lobe
B. Occipital lobe
C. Temporal lobe
D. Frontal lobe
B. Occipital lobe
Which of the following would be an activity controlled by the front lobe?
A. Hearing and memory
B. Logic, reasoning, and consequences
C. General sensory data, such as temperature or touch
D. None of the above
B. Logic, reasoning, and consequences
White matter represents ___ nerve fibers, while grey matter represents ___ nerve fibers.
A. unyelinated; myelinated
B. myelinated; unmyelinated
C. myelinated; myelinated
D. unmyelinated; unmyelinated
B. myelinated; unmyelinated
Which of the following represents the term to become less neagtive?
A. Repolarize
B. Hypepolarize
C. Depolarize
D. Some other term that ends in polarize
C. Depolarize
Which of the following represents a descending nerve tract that is involved with muscles of posture and balance?
A. Rubrospinal tracts
B. Spinothalamic tracts
C. Reticulospinal tracts
D. Spinocerebellar tracts
A. Rubrospinal tracts
Which neuroglial cell is involved with metabolism (nutrition) and ion concentration maintenance?
A. Microglia
B. Ependymal cells
C. Astrocytes
D. Oligodendrocytes
C. Astrocytes
