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Nervous System SG

QuestionAnswer
What are the three functions of the nervous system? Sensory input, integration, motor output
What is included in the nervous system structurally? The central nervous system, peripheral nervous system, brain, and spinal chord. (BRAIN, SPINAL CHORD, NERVES)
What are the universal listeners or receivers of neuron impulse? dendrites
What are the universal talkers or senders of neuron impulse axons
what do we call the area where two neurons meet? synapse
What is the myelin sheath covering the axon of a neuron in the PNS? Schwann cells
What are the gaps between the myelin sheath of a neuron in the PNS? nodes of ranvier
How do action potentials move to the next neuron? neurotransmitters
The lobes of the brain are found in which brain region? the cerebrum
What separated the lobes of the brain? fissures.
Where is the thalamus located? Deep in the center of the brain above the brainstem and below the cerebral cortex. DIENCEPHALON
Where does the spinal chord attach to the brain? brainstem(MEDULLA OBLONGATA)
what three parts make up the brain stem the midbrain, the pons, and the medulla oblongata
What does the cerebellum do? involuntary coordination and body movements
olfactory smell
optic vision and detection of light by the pupil
oculomotor eye moment upward, downward, and inward; pupils respond to light
trochlear eye movement downward and inward
trigeminal facial sensation and chewing
abducent side-to-side(lateral) eye movement
facial facial expression and taste in the front two thirds of the tongue
vestibulocochlear hearing and balance
glossopharyngeal swallowing, gag reflex, and speech
vagus swallowing, gag reflex, and speech; control of muscle in internal organs
accessory neck turning and shoulder shrugging
hypoglossal tongue movement
list the four lobes of the brain frontal, parietal, temporal, occipital lobes
what is the job of the hypothalamus? It is part of automatic response
CENTRAL NERVOUS SYSTEM brain and spinal chord
PERIPHERAL NERVOUS SYSTEM cranial and spinal nerves
SENSORY (afferent) sense organs
MOTOR efferent
AUTOMATIC involuntary--->sympathetic and parasympathetic-->cardiac and smooth muscle glands
SOMATIC voluntary---->skeletal muscles
What's the difference between a neuron and neuroglia? Neurons are specialized cells that transmit electrical impulses for commun. possessing axon and dendrites. Neuroglia(glial cells) are non-neuronal supporting cells that outnum. neurons without conducting impulses. While neuron's do not divide,glia>mitosis
How does the nervous system and another system maintain homeostasis. The NS acts as the body's rapid control center that works with the other systems to coordinate responses. Ex: If you are cold, your NS will send a signal to your muscular system to cause you to shiver. This is called thermoregulation, (body is warming up)
(PT 1) Explain how we respond so quickly to dangerous stimuli? Talk about reflex and reflex arc. Give and example. We respond instantly to danger, such as pulling our hand away from a hot surface. through involuntary reflexes that bypass the brain for faster processing. This is called a reflex arc.
(PT 2)Explain how we respond so quickly to dangerous stimuli? Talk about reflex and reflex arc. Give and example. Reflex arc is a neural pathway where sensory neurons carry signals to the spinal chord, which immediately sends motor responses designed to protect the body from injury. Instead of waiting for the brain to process a plan reflex arc=shortcut.
Created by: kmarino23
 

 



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