Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
nervous sys
| Question | Answer |
|---|---|
| What are the three major sections of neuron | cell body, dendrites, axon |
| what is the structural and functional unit of the NS | neuron |
| what are the highly branched extension of the cell body | dendrites |
| receptive surface of a neuron- conducts electrical signals toward the cell body | dendrites |
| what are the three types of neurons | sensory neurons, interneurons, motor neurons |
| afferent(arrive) and efferent(exit) neurons are another name for | sensory and motor |
| these neurons are only located in the CNS and are connected neuron to neuron | interneurons |
| carry messages from sensory receptors to the CNS | Sensory neurons |
| what color are myelinated nerves; unmyelinated | white, gray |
| schwann cells which are also _ cells make this substance | glia, myelin |
| what is myelin | lipoprotein layer that covers some axons |
| breaks or gaps betweent he schwann cells are called | nodes of raniver |
| a nerve impusle 'jumping' from gap to gap is known as | saltatory |
| myelinated neurons transmits an impulse _ mPS | 120 |
| a nerve impulse that travels the entire length of the axon is called a | continuous conduction |
| __ moves inside the cell causing an action potential | Na |
| Na ions makes the inside of the membrane more __ than the outside | + |
| the brief period after passage of the action potential is called the | refractory period |
| what are the three types involved in synaptic conduction | presynaptic neuron; synaptic cleft; postsynaptic neuron |
| which synaptic neuron is the transmittig neuron and which is receiving neuron | presynaptic neuron, and receiving neuron |
| what is the most numerous transmitter in the peripheral NS- | acetylcholine (ACh) |
| ACh is associated with the __ nervous system | parasympathetic |
| Norepinephrine is associated with the __ nervous system | sympathatic |
| uniform contraction are conducted by the _ synapses and where are they located | electrical; between smooth muscle cells and cardiac muscle |
| what two factors influence the rate of conduction of the impulse | axon's diameter, presence or absence of a myelin sheath |
| in relex actions neurons go to this structure first | spinal cord |
| the most high-leve brain functions take place in the | cerebrum |
| the frontal lobe assist in | planning, coordinating, controlling, and executing behavior |
| SSSLIMWJ | are functions controlled by the frontal lobe |
| intergrating sensory information from various parts of the body, knowledge of numbers and their relations, manipulation of objects, spatial processing | parietal lobe |
| center for hearing, taste and smell, the dominant hemisphere receives and interprets sounds as words | temporal lobe |
| functional visual areas | occipital lob |
| coordinates body movements; maintains posture and balance | cerebellum |
| relay station of all sensory input except vision | thalamus |
| where is the thalamus located; between the two cerebral hemispheres | within the middle of the brain |
| most primitive part of the brain and is responsible for sustaing the basic functions of life | the brain stem |
| what are the three parts of the brain stem | midbrain, pons, medulla oblongata |
| major relay stations for neurons transmitting signals to the cerebral cortex, as well as many reflex centers are found on what part of the midbrain | midbrain |
| relay and reflex centers for vision and hearing are located in the | top portion of the midbrain |
| reflex and relay centers relating to pain, temp, and touch as well as control of movement is located in the | bottom portion of the midbrain |
| connect the two halves of the cerebellum, relay station linking the cerebral cortex and the medulla oblongata | pons |
| touch, proprioception, pain, vibration and temperature sensory pathway | somatosensory |
| what makes the CSF | choroid plexuses |
| where is CSF reabsorbed into the bl | through the dural sinuses |
| interconnected cavities within the cerebral hemispheres and brain stem | ventricles |
| _ nerves int he PNS take impulses to and from the CNS | cranial |
| _ nerves take impulses to and away from the spinal cord | spinal |
| _ pathways that provide input from the body into the CNS | sensory |
| _ pathways that carry signals to muscles and glands | motor |
| The peripheral nervous system can be subdivided into the | somatic and autonomic nervous system |
| oversees conscious activity | SNS |
| oversees unconcious activity | ANS |
| The ANS can be subdivided into the | sympathetic and parasympathetic nervous system |
| sympathetic NS is associated with | fight or flight response |
| parasympathetic NS is associated with | relaxation |
Created by:
hooah
Popular Nursing sets