Term
|
Definition
The major axis of the CNS.
It is vertical in the spinal cord & brain stem
It is horizontial in the diencephalon-cerebrum.
|
|
|
Term
|
Definition
| divides the body into precise right-left halves; producing two equal mirrior image pieces. |
|
|
Term
|
Definition
| Parallel to the sagittal plane, but not in the midline. |
|
|
Term
|
Definition
| at a right angle to the neuraxis |
|
|
Term
|
Definition
|
|
Term
|
Definition
| section is at right angle to a sagittal section and at right angles to a transverse section |
|
|
Term
| The parts of the nervous system... |
|
Definition
| function together to produce preception, thought and action. |
|
|
Term
|
Definition
| contact between neurons where information is passed from one neuron to the next |
|
|
Term
|
Definition
| the resulting cut surface |
|
|
Term
|
Definition
| a cut through the body or part of it |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| near the point wehre the structure connects itht he rest of the body |
|
|
Term
|
Definition
| farther from the point wehre the structure connects with the rest of the body |
|
|
Term
|
Definition
|
|
Term
|
Definition
| towards the top of the head |
|
|
Term
|
Definition
| towards the bottom of the feet |
|
|
Term
|
Definition
|
|
Term
|
Definition
| what was posterior during early development |
|
|
Term
|
Definition
| what was anterior during early development |
|
|
Term
|
Definition
| behind towards the back of the body |
|
|
Term
|
Definition
| in front of ; towards the front of the body |
|
|
Term
|
Definition
| transmit information, usually in the form of nerve impulses |
|
|
Term
|
Definition
| chemical-electrical signals that can travel along an axon at speeds of a few hundred meters per second |
|
|
Term
|
Definition
| facilitate neurons in various ways, but do NOT transmit nerve impulses |
|
|
Term
|
Definition
| the main function of the nervous system |
|
|
Term
|
Definition
| contained in the cell body, and necessary for the cell's function |
|
|
Term
|
Definition
| a group of shorter processes |
|
|
Term
|
Definition
| A single longer process, transmit messages as a nerve impulse |
|
|
Term
|
Definition
(in PNS)
a group of neuronal cell bodies & their dendrites lying together |
|
|
Term
|
Definition
| when a group of neuronal cell bodies & their dendrites form layers on their brain's surface |
|
|
Term
|
Definition
| large numbers of nerve fibers that corse together in the CNS |
|
|
Term
|
Definition
| a group of cell bodies in the CNS |
|
|
Term
|
Definition
| large numbers of nerve fibers that course together in the PNS |
|
|
Term
|
Definition
| large numbers of nerve fibers that corse together |
|
|
Term
|
Definition
| when fresh specimans have a glistening white fatty covering |
|
|
Term
|
Definition
| cell bodies & dendrites that lack the myelin sheath and appeargray in fresh specimans including ganglia and nuclei |
|
|
Term
|
Definition
| when information passes from one neuron to another |
|
|
Term
|
Definition
| when a nerve impulse comes to the end of an axon, it causes a chemical...release at the synapse |
|
|
Term
| When a neurotransmitter excites.. |
|
Definition
| it facilitates the next neuron to start sending nerve impulses |
|
|
Term
| when a neurotransmitter inhibits |
|
Definition
| it inhibits the neurons from sending nerve impulses |
|
|
Term
|
Definition
| neurons that cause muscles to contract or glands to secrete-- "motor activity" |
|
|
Term
|
Definition
| neurons that carry information away from the CNS such as motor neurons |
|
|
Term
|
Definition
| carry sensory infomation from the periphery into the central nervous system |
|
|
Term
|
Definition
| carry information toward the CNS such as sensory neurons |
|
|
Term
interneurons
or
internuncial neurons |
|
Definition
| they lie w/i the CNS and process information carried by both sensory and motor neurons |
|
|
Term
Medulla
or
Medulla oblongata |
|
Definition
| lies @ the base of the skull and is directly continuous w/ the spinal cord |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| a large structure that lies in the back part of the cranial cavity of the skull |
|
|
Term
|
Definition
|
|
Term
|
Definition
| above the brainstem; means-beteeen the brain, lies between the brainstem & cerebral hemisphere |
|
|
Term
|
Definition
| formed of the R & L hemispheres & the largest portion of the brain |
|
|
Term
|
Definition
- diencephalon
- cerebral hemispheres
|
|
|
Term
|
Definition
| the cerebral hemispheres which are entirerly covered by sheets of gray matter |
|
|
Term
Central Nervous System
(CNS)
|
|
Definition
| consists of the brain which lies in the cranial cavity of the skull & spinal cord w/i the vertebral column |
|
|
Term
Peripheral Nervous System
(PNS) |
|
Definition
| consists of peripheral nerves that go between the CNS & other parts of the body |
|
|
Term
|
Definition
| building blocks of the body |
|
|
