الرئيسية
من طرف بسم الله الرحمن الرحيم
اليوم جبتلكم اسئلة ام سي كيو واسئلة اكمل
في شيت الجهاز العصبي في مادة الهيستو 
ملاحظة الجواب يكون باللون الاصفر
Questions on the Nervous System
اليوم جبتلكم اسئلة ام سي كيو واسئلة اكمل في شيت الجهاز العصبي في مادة الهيستو ملاحظة الجواب يكون باللون الاصفر Questions on the Nervous System - Which of the following statements is TRUE?
- Peripheral nerve is similar to smooth muscle in terms of the connective tissue investment
- Most nerves contain afferent and efferent fibers and thus carry both motor and sensory signals
- Nodes of Ranvier are most easily seen in cross-section of peripheral nerve
- None of the above
- Which of the following cells is reponsible for myelin formation in the peripheral nervous system?
- Astrocyte
- Oligodendrocyte
- Schwann cell
- Microglial cell
- Satellite cell
- The perineurium is the connective tissue layer:
- Surrounding an entire nerve
- Surrounding individual axons in the CNS
- Surrounding individual axons in the PNS
- Surrounding fascicles of axons in the CNS
- Surrounding fascicles of axons in the PNS
- The peripheral nervous system includes the:
- Somatic nervous system
- Brain
- Spinal cord
- Nuclei
- The system that controls smooth muscle, cardiac muscle, and gland activity is the:
- Somatic nervous system
- Autonomic nervous system
- Skeletal division
- Sensory nervous system
- A neuron with many short dendrites and a single long axon is a:
- Multipolar neuron
- Bipolar neuron
- Unipolar neuron
- None of the above
- Most sensory neurons are _____________________ neurons.
- Unipolar
- Bipolar
- Multipolar
- Efferent
- A and b
- A and c
- B and c
- Cells found in the choroid plexus that secrete cerebrospinal fluid are:
- Astrocytes
- Microglia
- Ependymal cells
- Oligodendrocytes
- Schwann cells
- Axons within nerves may have which of the following associated with them?
- Schwann cells
- Nodes of Ranvier
- Oligodendrocytes
- A and b
- All of the above
- Action potentials are conducted more rapidly in:
- Small diameter axons than large diameter axons
- Large diameter axons than small diameter axons
- Unmyelinated axons than myelinated axons
- Axons that lack a wrapping of Schwann cells
- Clusters of nerve cell bodies within the PNS are called _ganglia_.
- Gray matter contains primarily:
- Myelinated fibers
- Neuron cell bodies
- Schwann cells
- All of the above
- Arrange the following connective tissue structures from the outermost to the innermost.
1. Endoneurium third
2. Epineurium first
3. Perineurium second
14 Neurotransmitters are stored in vesicles that are located primarily in specialized portions of the:
. Soma
a. Axon
b. Dendrite
c. Perikaryon
15 Which of the following organelles is responsible for the appearance of Nissl bodies in the cell bodies of motor neurons?
. Smooth endoplasmic reticulum
a. Rough endoplasmic reticulum
b. Golgi apparatus
c. Mitochondria
d. Basal bodies
16 Which of the following is TRUE of the perineurium?
. It's a fascia surrounding many bundles of nerve fibers
a. It's a layer of connective tissue surrounding a singl bundle (fascicle) of nerve fibers
b. It's a thin layer of reticular fibers covering individual nerve fibers
c. It's an artery-rich fascia covering the external coat of nerves
17 Which of the following is TRUE of the sympathetic nervous system?
. It's voluntarily controlled via the forebrain
a. It's voluntarily controlled via the reticular formation
b. It uses different neurotransmitters at the ganglion and at the synaptic cleft
c. It's a subdivision of the somatic nervous system
18 Can neuroglial cells transmit action potentials from one nerve cell to another? no
19 What is the difference between grey and white matter of the CNS? Gray matter = cell bodies , white matter = axons + oligodendrocytes
20 What are the events whose frequency is being modulated to transmit information through the nervous system? Action potential
21 The cells that support, protect, and nourish the neurons are the _neuroglia_.
22 The cell body of a neuron is known as the _soma_.
23 Long extensions off neuronal cell bodies that conduct impulses away from the cell body are _axons_.
24 The dark granular substance inside neuronal cell bodies is called _nissel bodies_ and is composed of dense collections of _ribosomes_ which are the sites of _protein synthesis_.
25 _ependymal_ cells are specialized epithelial cells in the CNS that produce cerebrospinal fluid.
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