Nervous System Flashcards
Label the “X” of a neuron
A. Axon
B. Cell Body
C. Dendrite
D. Node of Ranvier
C. Dendrite
Label the “X” of a neuron
A. Node of Ranvier
B. Dendrite
C. Cell Body
D. Axon
C. Cell Body
Label the “X” of a neuron
A. Axon
B. Cell Body
C. Dendrite
D. Node of Ranvier
D. Node of Ranvier
Label the “X” of a neuron
A. Dendrite
B. Cell Body
C. Node of Ranvier
D. Axon Terminal
D. Axon Terminal
Label the “X” of a neuron
A. Myelin
B. Schwann Cell
C. Nucleus
D. Axon Terminal
B. Schwann Cell
Label the “X” of a neuron
C. Myelin
Label the “X” of a neuron
A. Axon Terminal
B. Schwann Cell
C. Myelin
D. Nucleus
D. Nucleus
Label the “X” of a neuron
A. Node of Ranvier
B. Dendrite
C. Cell Body
D. Axon
D. Axon
What is the role of the myelin sheath?
A. Controls formation of impulses
B. Decreases conductivity of impulse - slows or stops them
C. Increasing the speed at which impulses are conducted
D. Protects the dendritic connection from impacts
C. Increasing the speed at which impulses are conducted
What happens in a demyelinating disease?
A. Impulses are slowed/stopped, resulting in weakness of limbs, visual disturbances, autonomic dysfunction, and diminished intellectual capacity
B. Impulses speed up uncontrollably, resulting in muscle twitching, visual disturbances, immunity dysfunction
C. Impulses jump synaptic barriers across other nerves and short circuit those adjacent impulses as the sheath is no longer insulating their current
D. Schwann Cells reproduce in place of the Ependymal cells like scar tissue
A. Impulses are slowed/stopped, resulting in weakness of limbs, visual disturbances, autonomic dysfunction, and diminished intellectual capacity
Brainstem
A. Conduit for ascending & descending impulses
B. Smooth coordinated movements
C. Influences personality
D. Controls formation of words
A. Conduit for ascending & descending impulses
Brainstem (another function)
A. Conduit for impulse delay
B. Understanding of written Language
C. Smooth coordinated movements
D. Controls BP, Heart Rate, Respiratory Rate
D. Controls BP, Heart Rate, Respiratory Rate
Thalamus
A. Conduit for ascending & descending impulses
B. “Relay station” for sensations
C. Influences personality
D. Controls formation of words
B. “Relay station” for sensation
Thalmus (another function)
A. Decreases conductivity of impulses
B. Associates sensations with emotions
C. Understanding of written Language
D. Smooth coordinated movements
B. Associates sensations with emotions
Thalmus (one more function)
A. Damage causes Parkinson’s
B. Maintains Alert/Aroused state
C. Maintenance of an aroused or alert movements
D. Smooth coordinated movements
B. Maintains Alert/Aroused state