Chapter 8 - Nervous System Flashcards
The motor division is in two parts:
Somatic nervous system
Autonomic nervous system
Portion of the nervous system that we control
Somatic nervous system
portion of the nervous system that’s controlled by our subconscious
Autonomic nervous system
Parasympathetic nervous system
Somatic nervous system
Sympathetic nervous system
Autonomic nervous system
Carry signals (commands) from CNS
motor neurons
Allows voluntary movements
stomatic NS
Regulates involuntary, subconscious activities
autonomic NS
The Cerebrum is the portion of the brain that consists two hemispheres:
Cerebral Cortex (Grey Matter) Cerebral White Matter
Complex outer portion of the brain
Cerebrum
List the portions within the cerebrum:
Frontal Lobe
Parietal Lobe
Temporal Lobe
Occipital Lobe
Cerebrum:
Voluntary motor function. Personality, speech
frontal lobe
Cerebrum:
Many sensory functions including taste
parietal lobe
Cerebrum:
Auditory and olfaction (sense of smell)
temporal
Cerebrum:
Vision
occipital lobe
List the characteristics that the cerebrum gives us:
Voluntary movement Interpreting sensations Decision making Self-awareness Creativity Language Much of our memories
Associated with the reptilian portion of the brain. Brain evolved very early before we became complex social organisms that we are
brain stem
Coordinates voluntary sensory-motor movements. Stores memory of “learned motor patterns”
Cerebellum
Name an example of a learned motor pattern within the Cerebellum
learning guitar
largely responsible for autonomic functions of homeostasis, heart rate, blood pressure, breathing, hunger
Hypothalamus
Sense of smell is associated with emotional life and memories of emotional life
olfactory lobe
Cerebrovascular accident (accident of the brain bloodstream). Death of neurons from interruption of blood flow to a region of the brain
Acquired brain injury
List causes for acquired brain injury:
Stroke - blood clots Aneurysms - burst blood vessels Heart Attack Meningitis - infections of meninges Substance abuse
damage to neurons or nerve connections from force (trauma)
Traumatic brain injury
List causes for Traumatic brain injury:
Automobile accident Slip-and-fall Sports injury Gun shot Explosions (war)
The spinal cord transmits _______ to/from the brain
signals
quickly moving information
White matter
unmyelinated cells having to do with processing information
Grey matter
Circuit of neurons in spinal cord prewired to respond to stimuli
Reflex Arc
Why is the Reflex Arc important?
for speedy responses
List the 5 components of the reflex arc:
Receptor Sensory neuron Interneuron (integration center) Motor neuron Effector
“Resting-n-Digesting”
Individual organ responses
Directs blood to digestive tract
Parasympathetic NS
“Fight-or-Flight”
All effects at once
Sympathetic NS
What type of neuron dominates the sensory division?
sensory neurons
What type of neuron dominates the motor division?
motor neurons
Why is it called acquired brain injury?
Because you give it to yourself from bad diet, lack of exercise, etc.
