Sensory Systems
Which sensory receptor detects pain?
nociceptors
What mV value does a neuron rest at in the "Resting Membrane Potential" phase?
-7omV
What is the XII cranial nerve?
Hypoglossal
How many spinal nerve pairs are there in the body?
31 pairs
What are the name for hair cells in the cochlea that detect sound, hearing, and balance?
Stereocilla
Repolarization
Describe the differences between "sensory, motor, or both" when classifying the cranial nerves
- "sensory" = carries signals to the brain (afferent)
- "motor" = carries signals AWAY from the brain (efferent)
- "both" = mixed
Which neurological cell supports and cushions neurons?
glia cells
What are the parts of the external portion of the ear?
- Pinna / auricle
- auditory canal
- tympanic membrane
Which phase involves the "all-or-none" principle?
Threshold
Name one of the cranial nerves that is used for eye movement
- III. oculomotor
- IV. trochlear
- VI. abducens
What cell forms the myelin sheath around an axon?
schwann cells
What is the term for the sensation that the body recognizes as nonharmful?
Habituation
What is the purpose of a myelin sheath?
to speed up nerve impulses
Which Cranial Nerve is used for hearing and balance?
VIII. Vestibulocochlear
What are the 3 layers of the meninges, from superficial to deep?
(1) Dura Matter
(2) Arachnoid Matter
(3) Pia Matter