Week 2 - Quiz Flashcards
The right and left halves of the thalamus enclose which ventricle?
a. Third ventricle.
b. Right lateral ventricle.
c. Fourth ventricle.
d. Left lateral ventricle.
a. Third ventricle.
What region of the brain is involved in decussation also called crossover?
a. Midbrain.
b. Pons.
c. Medulla oblongata.
d. Hypothalamus.
e. Corpus callosum.
C. Medulla oblongata.
If a presynaptic neuron innervates two different postsynaptic neurons and is excitatory to one pathway but inhibitory to the other what
type of circuit fits this organization?
a. Reciprocal inhibition.
b. Convergent.
c. Excitatory.
d. Divergent and reciprocal inhibition.
e. Inhibitory.
d. Divergent and reciprocal inhibition.
What feature of the spinal cord is the grouping of lower spinal nerves that extend within the vertebral column leaving in pairs through the
intervertebral foramina to innervate structures of the lower body.
a. Conus medullaris.
b. Cauda equina.
c. Filum terminale.
d. Myelinated cortex.
e. Meninges.
b. Cauda equina.
What region of the brain is associated with the pyramidal cells, also called corticospinal tracts that regulate voluntary movement.
a. Frontal eye fields.
b. Somatosensory cortex.
c. Broca’s area.
d. Motor cortex.
e. Premotor cortex.
d. Motor cortex.
The cerebral aqueduct allows cerebrospinal fluid to move between which regions?
a. The fourth ventricle and the subarachnoid space.
b. The fourth ventricle and the central canal.
c. Lateral ventricles and the third ventricle.
d. Right and left lateral ventricles.
e. Third ventricle and the fourth ventricle.
e. Third ventricle and the fourth ventricle.
Identify the correct activities that the temporal lobe performs.
a. Primarily sensory localization.
b. Voluntary movement, memory, higher reasoning, and emotional processing.
c. Vision, visual interpretation, and integrating eye movement.
d. Hearing, equilibrium, sensory interpretation, and memories of sensory experiences.
d. Hearing, equilibrium, sensory interpretation, and memories of sensory experiences.
Identify the INCORRECT statement about cerebrospinal fluid (CSF).
a. CSF is watery and contains proteins and electrolytes.
b. CSF provides both nutrients and chemical signals to the brain.
c. CSF is produced by filtering from the plasma of the blood.
d. CSF is enclosed in the spaces between meningeal layers and does not turn over in our lifetime.
e. CSF allows the brain to rest in the cranial cavity without contacting the bone.
d. CSF is enclosed in the spaces between meningeal layers and does not turn over in our lifetime.
What is the thickest meningeal layer?
Dura mater
Consider the anterior spinothalamic tract. Based upon this name and your understanding of the organization of the spinal cord identify the
INCORRECT statement about this pathway.
a. All listed options are correct.
b. This pathway is motor output.
c. This step in the pathway begins at the spinal cord and ends in the thalamus by connecting to other neurons in those regions.
d. The pathway is in the anterior (ventral) region of the spinal column in cross-section.
e. The pathway is ascending.
b. This pathway is motor output.
The hypothalamus is a key region of the brain involved in regulating homeostasis through the autonomic nervous system but does not
control ALL the common examples. Identify the example that is NOT controlled via the hypothalamus.
a. Tactile sexual response.
b. Respiratory rate.
c. Heart rate.
d. Body temperature regulation.
e. Blood pressure regulation.
b. Respiratory rate.
The ventricle located in the brain stem.
a. Fourth ventricle.
b. Lateral ventricles.
c. Third ventricle.
a. Fourth ventricle.
The central sulcus is found where on the brain.
a. Between the frontal and parietal lobes.
b. Between the parietal and occipital lobes.
c. Between the cerebrum and cerebellum.
d. Between the pons and medulla oblongata.
e. Between the frontal and temporal lobes.
a. Between the frontal and parietal lobes.
Identify the structure that is closely associated with the brain (as in we frequently see it in a brain dissection) but is part of the peripheral
nervous system.
a. Optic nerve.
b. Cerebellum.
c. Optic tract.
d. Frontal lobe.
e. Olfactory tract.
a. Optic nerve.
Identify the example that is NOT a form of tract in the nervous system.
a. All listed options are examples of tracts in the CNS.
b. Projection fibers that connect the cortex to the peripheral nervous system, also known as motor pathways.
c. Basal nuclei that regulate the balance of excitatory and inhibitory signals within the body and is implicated in Parkinson’s
disease.
d. Commissures that connect the right and left hemispheres through the corpus callosum allowing integration and coordination.
e. Association fibers that connect one brain region to another within the same hemisphere allowing integration between regions.
c. Basal nuclei that regulate the balance of excitatory and inhibitory signals within the body and is implicated in Parkinson’s
disease.
