PORTAGE PATHOPHYSIOLOGY MODULE 6 ACTUAL TEST BANK QUESTIONS SOLUTIONS GRADED A PLUS PREMIUM STUDY RESOURCE

PORTAGE PATHOPHYSIOLOGY MODULE 6
ACTUAL TEST BANK QUESTIONS
SOLUTIONS GRADED A PLUS PREMIUM
STUDY RESOURCE

●● What does the PNS contain
Answer: cranial and spinal nerves and ganglia


●● Layers of meninges
Answer: dura mater, arachnoid mater, pia mater


●● Pia mater
Answer: thin and delicate and contains surface level blood vessels that
perfuse the brain and spinal cord.


●● arachnoid mater
Answer: 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


●● Dura Mater
Answer: strong, continuous connective tissue sheath that provides the
brain and spinal cord with most of its protection.

, ●● How is CSF produced?
Answer: Specialized ependymal cells called the choroid plexus project
into the ventricles and produce CSF.


●● CSF Function
Answer: 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.


●● Afferent nuerons
Answer: Nerve cells that carry impulses towards the central nervous
system


●● Efferent Neurons
Answer: carry motor output from the brain and spinal cord to the
periphery.


●● Neuroglial cells of the CNS
Answer: astrocytes, oligodendrocytes, microglia, ependymal cells