CNS Exam 1 Flashcards
What receptor is found at the muscle tendon junction? A. Muscle Spindle B. Golgi Tendon Organ C. Free nerve ending D. Pacinnian Corpuscle
B. Golgi tendon organ
A bundle of fibers that form a specific tract may also be called a \_\_\_\_\_\_\_. Funiculus Nucleus Fasiculus Gyrus
Fasiculus
In gerneral, ganglia are found in the _____, while groups of neurons in the _____ are called nuclei.
PNS, CNS
Which region of the neural plate forms the peripheral nervous system? Neural Crest Neural tube Neural fold Neural groove
Neural Crest
Which classification of fibers joins one part of the cerebral cortex to another part within the same hemisphere? Association Projection Commissural Cotton
Association
The filum terminale is a remnant of what material? Gray matter Dura matter Arachnoid matter Pia matter
Pia matter
Somatosensory cortex is also called the \_\_\_\_ gyrus. Precentral (motor) Lingual Postcentral Transverse temporal
Postcentral
Which cranial nerve makes the border between the Basilar pons and the middle cerebral peduncle? CN I CN III CN IV CN V
CN IV
Which is a primary brain vesicle? Diencephalon Myelencephalon Telencephalon Rohmbencephalon
Rohmbencephalon
Motor neurons within the ventral horns are examples of \_\_\_\_\_ type neurons? Unipolar Mulltipolar Bipolar Polypolar
Multipolar
What is the most rostral part of the CNS? Spinal ganglion Autonomic ganglion Spinal cord Brain
Brain
All of the following are characteristics of a synapse except ______.
Synapses only occur at the presynaptic axon and postsynaptic dendrite.
The connection between most neurons in the mammalian nervous system is \_\_\_\_\_. The synapse The syncitium A gap junction An initial segment
The synapse
Which axons leave the spinal cord in the ventral root? Somatic sensory Visceral afferent Somatic motor Postganglionic sympathetic
Somatic motor
All of the neurons in the adult are descendants of cells of the embryonic \_\_\_\_\_\_\_. Neural tube Ectoderm Neural crest Mesoderm
Ectoderm
Which of the embryonic brain vesicles contain cells which eventually become the neurons of the cerebral cortex? Telencephalon Diencephalon Myelencephalon Metecephalon
Telencephalon
The medulla is the adult derivative of the \_\_\_\_\_\_. Telencephalon Diencephalon Myelencephalon Metecephalon
Myelencephalon
The main bundle of fibers that connects the cerebral hemispheres to the brainstem and spinal cord are called the crus cerebri or the ______.
Cerebral peduncles
How many neurons participate in stretch reflex such as the knee jerk reflex?
Two
What cortical layer contains Betz cells? Molecular Inner granule Fusiform Inner pyramidal
Inner Pyramidal
Which is not a symptom of spinal nerve root compression? Pain in muscles Ptosis Loss of tendon reflex Motor weakness
Ptosis
In the cerebral hemispheres, inferior and ______ are the same direction.
Ventral
The PNS \_\_\_\_\_\_\_\_\_. Includes the spinal cord Includes cranial nerves Is sheathed in fluid filled spaces Is surrounded by bones
Includes cranial nerves
The brain flexure that develops between the metencephalon and the myelencephalon is the \_\_\_\_\_ flexure. Midbrain Cervical Pontine Cephalic
Pontine
Alpha motor neurons innervate \_\_\_\_\_\_\_. Intrafusal muscle fibers Golgi tendon organs Extrafusal muscel fibers Intervertebral discs
Extrafusal fibers
A recurrent branch of the spinal nerve innervates all of the following except:
Skin of the back
What artery supplies the visual cortex?
Posterior cerebral artery
What artery crosses the corpus callosum?
Anterior cerebral artery
Which microglial cell myelinates the CNS?
Oligodendrocyte
Which microglial cell myelinates the PNS?
Schwaan Cells
Which is gray matter structure?
Pyramid
Which of the following are neural crest cells?
Sensory neurons
What lines the ventricles?
Ependymal cells
What kind of fiber is the corpus callosum
Comissural
Where is the cerebellum?
Diencephalon
What connects the lateral ventricle and the 3rd ventricle?
Interventricular septum
During a lumbar puncture, which of the following is not punctured?
Pia matter
What lobe is somatosensory?
Parietal lobe
Which lobe deals with emotions?
Limbic lobe
Where is CSF located?
Subarachnoid space
What is gray matter in the midbrain?
Nucleus
Which of the following is the most rostral part of the CNS?
Telencephalon
Which week does the nervous system start to develop in the embryo?
3rd week
Which of the following develops from the telencephalon?
Cerebrum
What is a tract?
Bundle of nerve fibers in the CNS
What cell type is in the DRG?
Pseudounipolar
What drains the internal structures of the brain?
Great cerebral vein of Galen
Which area of the brain is for speech?
Broca’s area
Which vein drains the brain?
Internal jugular vein
Which of the following is adjacent to the brain?
Pia matter
Which of the following did the cerebellum develop from?
Metencephalon
Which of the following did the cerebellum develop from?
Metencephalon
Which cell is phagocytic?
Microglial
What plane divides the body into right and left halves?
Sagittal
What is found in low concentrations in the ?
Protein
What connects Weinecki’s to Brocca’s?
Arcuate fibers
What is the Cerebellum?
Metencephalon
Not found in the forebrain?
Mescencphelon (midbrain)
What is derived from neural crest cells?
Sensory neurons
Amount of CSF found in a normal cross section?
150mL
What does the inferior temporal supply?
Middle cerebral
What crosses the corpus callosum?
Anterior cerebral
Importance of the notocord?
Induction of ectoderm
Most common synapse?
Axo-dendritic
Connects the 3rd ventricule to the lateral ventricle?
Intraventricular Foramen
Where is the Cerebral aqueduct located?
Midbrain (Mescencephalon0
Sensory are _____ and in the spinal cord, and ______ in the brain stem.
Dorsal, lateral
Vision comes from the ______
Occipital lobe
Somatosensory is in the:
Parietal lobe
What are deep structures innervated by?
The great Cerebral vein of Galen
What is adjacent to the brain?
Pia matter
What drains the cranium?
Internal jugular vein
What makes up CSF?
Ependymal cells
What is a bundle of nerve fibers in the CNS?
Tract
