Nervous Tissue
What is a neuron?
This structure has more than half the neurons in the entire brain
What is the cerebellum?
A tube like structure located within the spinal cavity
What is the spinal cord?
What is Bell Palsy?
Panic Attack
What is fight or flight?
first phase of the action potential
What is depolarization?
Connects the spinal cord with higher brain structures. Has three parts
What is the brain stem?
hollow needle inserted into the subarachnoid space
What is a Lumbar Puncture?
Innervates orbicularis oculi, muscle involved in blinking
What is CN VII, facial nerve?
What is an antimuscarinic agent?
What are astrocytes?
Emotional brain
What is the limbic system?
Composed of myelinated axons in the spinal cord
Damage to this nerve causes the tongue to deviate toward the injured side
What is CN XII, hypoglossal nerve?
The distribution of sympathetic & parasympathetic
What is dual innervation?
nerve glue
What are Glial Cells or Neuroglia?
Regulates body temp, water balance, metabolism, & autonomic nerves
What is the hypothalamus?
The nerve pathway involved in a reflex
What is the reflex arc?
This nerve causes the motor fibers of the facial nerve to be stimulated if surface of the cornea is touched
What is CN V, trigeminal nerve?
Slows heart rate
What is a cholinergic neurotransmitter?
Small clusters of cell bodies in the PNS
What are ganglia or ganglion?
Includes the thalamus and hypothalamus
What is the diencephalon?
These types of drugs can be injected into the subarachnoid space to achieve spinal anesthesia
What are "-caine" drugs?
Innervates the heart and digestive tract, Literally means wanderer
What is CN X, vagus nerve?
An agent that increases heart rate, force of cardiac contraction, and blood pressure
What is a sympathomimetic agent?
Chemical messengers stored in vesicles on the axon terminal
What are neurotransmitters?
Controls the pituitary gland, can be considered an endocrine gland
What is the hypothalamus?
Sensory & motor pathways; reflex center of spinal cord
What are ascending tracts?
Plays a role in the gag reflex
What is CN IX, glossopharyngeal nerve?
Activates alpha & beta receptors
What is norepinephrine?