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
CNS- bio5/sc
neural tissue, brain and spinal chord
| Question | Answer |
|---|---|
| axon collateral | an extension of axon |
| composition of neurons | body, axon, dendrites, all organelles except centrioles, endoneurium, nissl bodies, myelin sheath, schwann cells |
| Somatic nervous system | "of the body", (skin, skeletal muscles...) voluntary, information from CNS to skeletal muscle, somatic motor nerves |
| Autonomic nervous system (ANS) | regulates smooth muscle, cardiac muscle and glands. Divides into sympathetic and parasympathetic. visceral (internal organs) motor nerve |
| levels of organization of the nervous system | CNS>PNS>Afferent division and Efferent Division> SNS and ANS>Sympathetic division and parasympathetic divisions |
| Pineal gland | secretes melatonin which regulates sleep/wake cycles. located in epithalamus |
| Thalamic function# | relay station for sensation, relays area for information before going to sensory cortex except smell |
| Basal Nuclei# | >control of muscle tone >coordination of learned movement patterns >processing, integration and relay of information from cerebral cortex to the thalamus |
| hypothalamic functions | >controls autonomic nervous system >controls endocrine system >regulates feeling of thirst, hunger, satiety >controls body temperature |
| PNS | all neural tissue outside CNS; spinal and cranial nerves. Carries messages to and from spinal chord &brain |
| White matter vs. Gray matter | White- militated axons gray- un-mylinated axons, cell bodies, dendrites |
| 3 types of synapses | -w/ another neuron -neuromuscularjunctions -neuroglandular junctions |
| Astrocytes# | blood brain barrier; they wrap around capillaries, keeping blood out of brain, protects brain from toxins -supports & anchor neurons -Control chemical environment |
| Myelin sheath# | produced by oligodendrocytes and schwann's cells -protects, insulates and improves speed of nerve impulse |
| Dorsal sections of spinal chord# | posterior gray horn is thinner and smaller, sensory neurons, dorsal root ganglion |
| anterior sections of spinal chord# | anterior gray horn is large and wide, motor neurons |
| Ependymal cells | CNS neuroglia: lines ventricles |
| oligodendrocytes | CNS neuroglia: wraps CNS nerve fibers, protects axons and speeds up electrical current |
| Arachnoid mater | loose brain covering |
| pia mater | adheres directly to brain |
| Protection of the brain | bone, meninges, CSF, blood brain barrier |
| Schwann cells | PNS neuroglia: surrounds axons of PNS |
| Microglia | CNS neuroglia: -phagocytes |
| Cells of the nervous system | neurons-conduct electrical input -neuroglia-supporting cells |
| Parietal lobe function | primary sensory cortex |
| CSF# | surrounds brain and spinal cord -provide liquid cushion that gives buoyancy to CNS organs |
| Meninges# | dura mater, arachnoid mater, and pia mater |
| dura mater# | layer separated forming dural sinuses |
| interceptors | internal (visceral) environment: montiors glucose levels, sodiums levels, internal systems |
| occipital lobe function | primary auditory & olfactory cortex |
| Insula | gustatory (taste) cortex |
| Blood brain barrier# | bloodborne substances are separated from neurons by: endothelium of capillary walls and astrocytes |
| proprioceptors | internal (somatic) environment ex. know when joints are bent |
| Frontal lobe function# | primary motor cortex |
| CNS# | Brain and Spinal Chord. Integrates, processes and coordinates sensory input and motor input |
| 4 basic types of neurons# | a) anaxonic neuron (special sensory) b) bipolar neuron (special sensory) c) pseudounipolar (most sensory neurons) d) multipolar neuron (most motor neurons) |
| Cerebellum functions | provides precise timing of appropriate patters of skeletal muscle contraction. (ex. coordination, balance and posture) |
| Medulla Oblongata functions and divisions | vital reflex center: cardiovascular center and respiratory centers (ex. coughing, sneezing) Olives-relays info to cerebrum&cerebellum Pyramids: cross over of motor tracts |
| Midbrain structures | -cerebral aqueduct, -cerebral peduncles -corporar quadrigemina (superior colluclus; visual relfex, inferior colliculus; auditory reflex) |
| brain stem | Midbrain, pons, medula oblongata -pathway for tracts between higher&lower neural centers |
| Axon# | 1 axon per neuron, contains no nissl bodies or golgi apparatus |
| nerve fibers# | long axons |
| All neurons in the cortex are... # | interneurons |
| Exteroceptors | external environment ex.loss of pain, touch, temp |
Created by:
holt.gracea
Popular Anatomy sets