Module 6: Problem Set
Due No due date Points 5 Questions 33 Time Limit None
Attempt History
Attempt Time Score
LATEST Attempt 1 3,369 minutes 5 out of 5
Score for this quiz: 5 out of 5
Submitted Jun 29 at 8pm
This attempt took 3,369 minutes.
Question 1 pts
List the 2 major divisions of the nervous system and the structures found in each.
Your Answer:
The central nervous system: brain and spinal cord. the brain is is comprised of three regions, the hindbrain, midbrain, and forebrain. basal
ganglia, limbic system, the spinal cord, the meninges, cerebrospinal fluid.
Peripheral nervous system: is made up nerves and ganglia. Olfactory nerve, optic nerve, oculomotor nerve, trochlear nerve, trigeminal
nerve, abducens nerve, facial nerve, vestibulocochlear nerve, glossopharyngeal nerve, vagus nerve, accessory nerve, hypoglossal nerve.
The 2 divisions of the nervous system are the central nervous system (CNS) containing the brain and spinal cord and the
peripheral nervous system (PNS) containing spinal nerves, cranial nerves, and ganglia that are outside of the PNS.
Question 2 pts
Describe the meninges and their function.
Your Answer:
The meninges are connective tissue sheaths that surround the brain and spinal cord. The pia mater is the innermost layer of the meninges.
It is thin and delicate and contains surface level blood vessels that perfuse the brain and spinal cord. The second layer of the meninges is
are the arachnoid layer. it encases the entire CNS and its delicate, nonvascular, and waterproof. The third layer of the meninges is known
as the dura mater. The dura mater is a string, continuous tissue sheath that provides the brain and the spinal cord with most of its
protection.
The meninges are connective tissue sheaths that surround the brain and spinal cord. The pia mater is the innermost layer
of the meninges. It is thin and delicate and contains surface level blood vessels that perfuse the brain and spinal cord. The
second layer of the meninges is the arachnoid layer. It encases the entire CNS and is delicate, nonvascular, and
waterproof. Cerebrospinal fluid (CSF) circulates in an area just below the arachnoid layer called the subarachnoid space.
The third layer of the meninges is known as the dura mater. The dura mater is a strong, continuous connective tissue
sheath that provides the brain and spinal cord with most of its protection.
Question 3 pts
Describe how CSF is produced and its function.
Your Answer:
CSF serves as a cushion for the brain and spinal cord, protecting them from outside physical force. It maintains a constant ionic
environment that allows for the diffusion of essential nutrients, electrolytes, and metabolic waste products into the extracellular fluid
surrounding the CNS neurons. A thin layer of neuroglial cells, collectively known as the ependyma, line the ventricles of the brain and the
central canal of the spinal cord. Specialized ependymal cells called the choroid plexus project into the ventricles and produce CSF. The fluid
flows from the lateral ventricle through the intraventricular foramen into the third ventricle, the cerebral aqueduct, and into the fourth
ventricle where it will then exit the ventricular system. Small openings called foramina allow the CSF to pass into the subarachnoid space
where it will bathe the brain and spinal cord.
, CSF serves as a cushion for the brain and spinal cord protecting them from outside physical force. It maintains a constant
ionic environment that allows for the diffusion of essential nutrients, electrolytes, and metabolic waste products into the
extracellular fluid surrounding the CNS neurons. A thin layer of neuroglial cells, collectively known as the ependyma, line
the ventricles of the brain and the central canal of the spinal cord. Specialized ependymal cells called the choroid plexus
project into the ventricles and produce CSF.
Be familiar with the cranial nerves and their general function.
Refer to Table 6.1
Question 4 pts
What is the difference between afferent and efferent neurons?
Your Answer:
afferent neurons carry signals to the brain and spinal cord as sensory data. and efferent neurons send signals from the brain to the
muscles, glands and organs of the body in response to sensory input.
Afferent neurons carry sensory information from the periphery to the spinal cord and brain while efferent neurons carry
motor output from the brain and spinal cord to the periphery.
Be familiar with each division of the nervous system and their function.
Refer to Figure 6.4
Question 5 pts
List the neuroglial cells of the CNS and PNS.
Your Answer:
CNS: oligodendrocytes, astrocytes, microglia, and the ependymal
PNS: satellite and Schwann
CNS: oligodendrocytes, astrocytes, microglia, and the ependymal cells.
PNS: satellite cells and Schwann cells
Question 6 pts
Describe each phase of an action potential.
Your Answer:
Phase 1 Resting Potential. During the resting phase, both sodium and potassium gates are closed.
Due No due date Points 5 Questions 33 Time Limit None
Attempt History
Attempt Time Score
LATEST Attempt 1 3,369 minutes 5 out of 5
Score for this quiz: 5 out of 5
Submitted Jun 29 at 8pm
This attempt took 3,369 minutes.
Question 1 pts
List the 2 major divisions of the nervous system and the structures found in each.
Your Answer:
The central nervous system: brain and spinal cord. the brain is is comprised of three regions, the hindbrain, midbrain, and forebrain. basal
ganglia, limbic system, the spinal cord, the meninges, cerebrospinal fluid.
Peripheral nervous system: is made up nerves and ganglia. Olfactory nerve, optic nerve, oculomotor nerve, trochlear nerve, trigeminal
nerve, abducens nerve, facial nerve, vestibulocochlear nerve, glossopharyngeal nerve, vagus nerve, accessory nerve, hypoglossal nerve.
The 2 divisions of the nervous system are the central nervous system (CNS) containing the brain and spinal cord and the
peripheral nervous system (PNS) containing spinal nerves, cranial nerves, and ganglia that are outside of the PNS.
Question 2 pts
Describe the meninges and their function.
Your Answer:
The meninges are connective tissue sheaths that surround the brain and spinal cord. The pia mater is the innermost layer of the meninges.
It is thin and delicate and contains surface level blood vessels that perfuse the brain and spinal cord. The second layer of the meninges is
are the arachnoid layer. it encases the entire CNS and its delicate, nonvascular, and waterproof. The third layer of the meninges is known
as the dura mater. The dura mater is a string, continuous tissue sheath that provides the brain and the spinal cord with most of its
protection.
The meninges are connective tissue sheaths that surround the brain and spinal cord. The pia mater is the innermost layer
of the meninges. It is thin and delicate and contains surface level blood vessels that perfuse the brain and spinal cord. The
second layer of the meninges is the arachnoid layer. It encases the entire CNS and is delicate, nonvascular, and
waterproof. Cerebrospinal fluid (CSF) circulates in an area just below the arachnoid layer called the subarachnoid space.
The third layer of the meninges is known as the dura mater. The dura mater is a strong, continuous connective tissue
sheath that provides the brain and spinal cord with most of its protection.
Question 3 pts
Describe how CSF is produced and its function.
Your Answer:
CSF serves as a cushion for the brain and spinal cord, protecting them from outside physical force. It maintains a constant ionic
environment that allows for the diffusion of essential nutrients, electrolytes, and metabolic waste products into the extracellular fluid
surrounding the CNS neurons. A thin layer of neuroglial cells, collectively known as the ependyma, line the ventricles of the brain and the
central canal of the spinal cord. Specialized ependymal cells called the choroid plexus project into the ventricles and produce CSF. The fluid
flows from the lateral ventricle through the intraventricular foramen into the third ventricle, the cerebral aqueduct, and into the fourth
ventricle where it will then exit the ventricular system. Small openings called foramina allow the CSF to pass into the subarachnoid space
where it will bathe the brain and spinal cord.
, CSF serves as a cushion for the brain and spinal cord protecting them from outside physical force. It maintains a constant
ionic environment that allows for the diffusion of essential nutrients, electrolytes, and metabolic waste products into the
extracellular fluid surrounding the CNS neurons. A thin layer of neuroglial cells, collectively known as the ependyma, line
the ventricles of the brain and the central canal of the spinal cord. Specialized ependymal cells called the choroid plexus
project into the ventricles and produce CSF.
Be familiar with the cranial nerves and their general function.
Refer to Table 6.1
Question 4 pts
What is the difference between afferent and efferent neurons?
Your Answer:
afferent neurons carry signals to the brain and spinal cord as sensory data. and efferent neurons send signals from the brain to the
muscles, glands and organs of the body in response to sensory input.
Afferent neurons carry sensory information from the periphery to the spinal cord and brain while efferent neurons carry
motor output from the brain and spinal cord to the periphery.
Be familiar with each division of the nervous system and their function.
Refer to Figure 6.4
Question 5 pts
List the neuroglial cells of the CNS and PNS.
Your Answer:
CNS: oligodendrocytes, astrocytes, microglia, and the ependymal
PNS: satellite and Schwann
CNS: oligodendrocytes, astrocytes, microglia, and the ependymal cells.
PNS: satellite cells and Schwann cells
Question 6 pts
Describe each phase of an action potential.
Your Answer:
Phase 1 Resting Potential. During the resting phase, both sodium and potassium gates are closed.
