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WorksheetsCh. 12B: Central Nervous System
Total questions: 16
Worksheet time: 9mins
What are the two types of sleep?
ROM
NREM (4 stages)
REM
MAC
NREM happens before REM. (T/F)
True
False
Which slow-wave sleep stages of NREM are presumed to be restorative stages?
NREM stages 1 & 2
NREM stages 2 & 3
NREM stages 3 & 4
NREM stages 1 & 3
What are the three layers of the meninges?
pia mater
pons
arachnoid mater
dura mater
The ___ ___ is the strongest meninx made up of two layers of fibrous connective tissue
dura mater
medulla oblongata
pia mater
arachnoid mater
Which layer of the meninges is the middle layer with spiderweb-like extensions?
minisci
pia mater
dia mater
arachnoid mater
Which layer of the meninges consists of delicate connective tissue that clings tightly to brain and has many tiny blood vessels that feed brain?
perameter
arachnoid mater
pia mater
dura mater
Cerebrospinal fluid forms a liquid cushion of constant volume around the brain. (T/F)
True
False
What is a cluster of capillaries that hangs from roof of each ventricle, enclosed by pia mater and surrounding layer of ependymal cells
cerebrospinal fluid
third ventricle
spinal cord
choroid plexus
__ pumps are used by ependymal cells to control composition of CSF and help remove wastes
Ion
Chemical
Mechanical
Voltage
Substances from blood must first pass through continuous endothelium of capillary walls before gaining entry into ___
nerves
axons
neurons
CSF
How is glucose, amino acids, and specific ions moved to the brain?
Simple diffusion
Active transport
Facilitated diffusion
Osmosis
Which junctions are found in brain capillaries?
Tight junctions
Gap junctions
Adherens
Desmosomes
The thick basement membrane surrounding capillaries contain __ that destroy certain chemicals that would activate brain neurons.
proteins
lipids
enzymes
buffers
The spinal cord is enclosed in the vertebral column (T/F)
False
True
Where are reflexes initiated and completed at?
medulla oblongata
spinal cord
choroid plexus
third ventricle
