Brain regions/functions
What is the function of the cerebellum
Coordinates voluntary movement, balance, posture, and motor learning
What is myelin, what does it do?
Fatty insulating layer around axons that speeds up nerve conduction
What is a denticulate Ligament
Denticulate ligaments are triangular-shaped extensions on each side of the spinal pia mater.
They act as anchors for the spinal cord, connecting pia mater to dura mater
Which cranial nerve is associated with balance?
CNVIII (Vestibulocochlear)
What is the topographic representation of the somatosensory cortex called?
Sensory homunculus
Name one function of the pons
Relays information; helps regulate breathing, sleep, and arousal
1. What is the function of neuroglia?
2. What is NOT a function of neuroglia?
1. Neuroglia Support Neurons in various ways
2. Neuroglia do NOT transmit information or generate electrical impulses
What is the difference in function/information between afferent and efferent pathways?
Afferent = sensory
Efferent = motor
What is the major function of the inferior colliculi?
Auditory reflexes
More specifically, it processed sound localization, frequency, and timing
This reflex pathway is the simplest type of reflex and involves one synapse between a sensory and a motor neuron.
Monosynaptic reflex
Name one function of the limbic system
Controls emotion, motivation, and memory formation
What glial cells surround PNS Neuron cell bodies?
Satellite Cells
What type of neuron carries signals up toward the brain and normally ends in the thalamus?
Second-order neuron
CN III and CN IV pass through the Superior Orbital Fissure. What other two nerves pass through this fissure?
CN VI, and CN V1 (Opthalmic Branch)
What type of reflex entirely bypasses the CNS?
Short Reflex
What's the main function of the cerebrum?
Higher cognitive functions, can be phrased as "Cognition"
What is the choroid plexus?
A structure in the brain that produces CSF
Which tract carries information about pain and temperature to the brain?
Spinothalamic tract
Which structure is the primary motor area found in? (Be specific)
The precentral gyrus of the frontal lobe
Name 4 unconscious states
Sleep, coma, stupor, and syncope
Name one function of the medulla oblongata
Regulates vital autonomic functions like heart rate, breathing, and blood pressure
Name 3 special sensory receptors
Photoreceptors, olfactory receptors, taste receptors, and hair cells
Note: Hair cells are for hearing
What is the name of the region of gray matter in the spinal cord that contains cell bodies of motor neurons and sends signals out through the ventral root?
Anterior (Ventral) Gray Horns
What fluid is the vestibule filled with?
endolymph
Describe symptoms of Delirium
A person in this state is easily distracted, alternates between drowsiness and excitability, and has reduced awareness