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42 Cards in this Set
- Front
- Back
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What is the nervous system?
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The nervous system is the mastering, controlling, communicating system of the body.
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What is the nervous system composed of?
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The Central Nervous System and The Pheripheral Nervous System.
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What are the functions of the nervous system?
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Sensory input, integration, and motor output
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What is in the CNS and PNS?
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CNS = the brain and spinal cord
PNS = nerve fibers (spinal nerves & cranial) |
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What is the difference between and functions of the afferent and efferent divisions?
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The afferent division SENDS impulses TOWARDS the cns, & the efferent division TRANSMITS impulses AWAY from the cns.
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What is the different between the functions of the somatic and the visceral sensory fibers?
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Somatic sensory fibers send impulses to the brain from senses (outside the body). EX: hearing music, recognizing friends
Visceral sensory fibers sense things from internal organs. EX: having to pee, stomach ache |
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What is the difference between and functions of the somatic NS and autonomic NS?
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Somatic NS is voluntary (you have control)
Autonomic NS is involuntary (you have no control) |
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What are the functions of each part of the brain?
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Cerebrum: remembering, problem solving, thinking & feeling. controls movement.
Cerebellum: controls coordination and balance. Brain Stem: control automatic functions such as breathing, digestions, heart rate & blood pressure. |
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Frontal Lobe (instinct)
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processes reasoning, planning, speech, movement, emotions, problem solving
EX: moving when someone is about to hit you |
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Parietal lobe (recognition)
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processes movement, orientation, recognition, perception of stimuli
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Occipital lobe (vision)
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processes visual information
EX: reading a paper |
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Temporal lobe (hearing)
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processes perception and recognition of auditory speech
EX: listening to music |
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Thalamus
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receives sensory input and directs it to the appropriate processing location
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Hypothalamus
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Monitors water and hormone concentration, body temperature, and associated with feelings of rage
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what are the meninges? What are the 3 layers? what are their function?
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meninges are connection tissue that lie external to the CNS. the 3 layers are dura mater, arachnoid mater, pia mater.
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What is cerebrospinal fluid? What is it composed of? what is its function?
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CSF is a plasmalike fluid that fills the cavities of CNS and externally surrounds CNS. its functions is to protect the brain and spinal cord.
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what is the blood brain barrier? what can get through it? what can't get through it? what are its functions?
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the BBB is a mechanism that allows the passage of materials from the blood into brain tissues. any fat-soluble substances can pass. metabolic wastes, proteins, toxins, most drugs, small nonessential amino acids, K+ cant go through
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What is the difference between a coup and countercoup injury?
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A coup injury occurs under the site of impacy
A countrecoup injury happens when the side opposite the area that was impacted is damaged. |
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what is a subdural hematoma and why is it dangerous?
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A type of hematoma, usually associated with tramatic brain injury, it is dangerous bc it can cause compression of an damage to delicate brain tissue.
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Olfactory
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smell
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optic
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visual activity
visual field |
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oculomotor
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pupillary reaction
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troculear
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eye movement
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trigeminal
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facial sensation
motor function |
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abducens
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motor function
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facial
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motor function
sensory |
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acoustic
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hearing
balance |
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glossopharyngeal
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swallowing and voice
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vagus
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gag reflex
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spinal accessory
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neck motion
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hypoglossal
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tongue movement and strength
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how many cranial nerves does each person have?
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12
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how many spinal nerves does each person have?
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31
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cervical spinal nerves innervate...
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head, neck, & shoulder
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thoracic spinal nerves innervate...
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chest, abdominal
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lumbar spinal nerves innervate...
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legs, muscles
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sacral spinal nerves innervate...
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boules, bladder, sexual function
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what is a burner or a stinger? what is the three mechanisms of injury of a burner or stinger?
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A “burner,” also called a “stinger,” is a nerve injury resulting from trauma to the neck and shoulder.
Mechanisms 1: traction injury to brachial plexus 2: direct blow to the supraclavicular fossa 3: nerve compression by a combination of neck hyperextension and ipsilateral lateral flexion |
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96% of your body is made up of ....
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carbon, hydrogen, oxygen, nitrogen.
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your body contains the smallest structural unit of life called
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cells
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your body must maintain a relatively stable internal environment called
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homeostasis
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what are the 11 organ systems?
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nervous system
muscular system integumentary system urinary system reproductive system digestive system cardiovascular system respiratory system skeletal system endocrine system lymphatic system |
