2024 HUBS 191 Progress Test 2 |Question and Answer| 100% Correct

HUBS 191 Progress Test 2 |Question and Answer| 100% Correct central nervous system *Ans* nervous system consisting of brain and spinal cord peripheral nervous system *Ans* nervous system consisting of peripheral nerves glia *Ans* 'glue' provide support for neurons, 5 type, 4 in CNS, 1 in PNS neurons *Ans* nerve cells, transmission of information dendrites *Ans* recieve input, send info into cell body cell body *Ans* contains nucleus and organelles axon *Ans* carries electrical impulses, may/may not be myelinated axon terminals *Ans* end terminus of the axon, neuro transmitter release tract *Ans* bundle of axons in the CNS grey matter *Ans* group of cell bodies in cerebral cortex/spinal cord white matter *Ans* bundle of axons in cerebral cortex/spinal cord ganglion *Ans* group of cell bodies in PNS nerve *Ans* bundle of axons in PNS input zone *Ans* dendrites and cell body, receives chemical signals from other neurons summation zone *Ans* axon hillock, decides to transmit signal or not conduction zone *Ans* axon may be quite long, carry electrical signals between brain areas to and from spinal cord or to and from peripheral sensory receptors output zone *Ans* axon terminals, contact input of other neurons, release of neuro transmitter multipolar *Ans* multiple processes emanate from the cell body, the 'typical' neuron bipolar *Ans* 2 processes emanate from the cell body (axon and long bridge to dendrites unipolar *Ans* 1 process emanates from cell body (hangs on side of axon) anaxonic *Ans* no distinct axon, all processes look alike astrocytes *Ans* supply nutrients to neuron, ensheath blood capillaries, transmit information, CNS microglia *Ans* immune cells of the CNS, engulf micro organisms / debris ependymal cells *Ans* line fluid filled spaces of brain and spinal cord, have cillia to circulate CSF, CNS oligodentrocytes *Ans* support nerve fibres, ensheath them with myelin, CNS schwann cells *Ans* support peripheral nerve fibres, ensheath them with myelin, similar to oligodendrocytes, PNS myelin sheath *Ans* lipid wrapped around axon, increases conduction velocity, multiple schwann cells in a row form the myelin sheath, gaps between myelin called nodes of ranivier Synapse/Synpatic Cleft *Ans* neuro transmitter release from one axon terminals where electrical turns to chemical