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
Histology
Nervous System
| Concept | Explanation |
|---|---|
| Functions of the nervous | Control of body's internal environment to maintain 'homeostasis', Programming of spinal cord reflexes, Memory and learning, and Voluntary control of movement. |
| soma | Neuronal cell body |
| (T/F) Neuronal cell body(soma), receives signal through dendrites | True |
| (T/F) Axons cannot be 1 meter long | False |
| Neuroglia | branched supporting cells in CNS that help with protection, metabolism, and signaling of neurons |
| Central Nervous System(CNS) | Brain and Spinal cord |
| Peripheral nervous system (PNS) | cranial and spinal nerves branching outward from the spinal cord and brain reaching every part of the body |
| CNS Surrounded by.. | bones and cerebrospinal fluid |
| Dura mater | tough outermost connective tissue layer around the CNS |
| Covers CNS on external surfaces | Delicate arachnoid mater and dura |
| Pia mater | adheres to surface of brain and spinal cord |
| (T/F) Between pia mater and arachnoid mater is subarachnoid space | True |
| Neuron Structure of cell body | nucleus, RER (Nissl body) Golgi, lipofuscin granules, neurofilaments , and microtubules. |
| Dendrite | send impulses toward body and have organelles like the cell body except Golgi |
| (T/F) The Axon Lacks organelles except microtubules and neurofilament | True |
| Neuroglia surround.. | neurons, axons, dendrites |
| (T/F) Neuroglia Don’t conduct impulses or form synapses | True |
| Neuroglia cell types | Astrocytes, Oligodendrocytes, Schwann cells, Microglia, and Ependymal Cells |
| Astrocytes | Protoplasmic astrocytes (in gray matter) or Fibrous astrocytes (white matter) |
| Oligodendrocytes | Myelin for axons in CNS |
| Schwann cells | Myelin sheath in PNS |
| Microglia | Small, phagocytosis (monocytes) |
| Ependymal Cells | Neural tube and ventricles of the brain |
| Myelin sheath | Specialized cells -around axons (lipid-rich, insulating sheath) |
| Nodes of Ranvier | Gaps between myelin sheath |
| (T/F) In PNS, Schwann cells myelinate axons and envelope unmyelinated axons | True |
| (T/F) In CNS, neuroglial oligodendrocyte cells myelinate numerous axons | True |
| Epineurium | Dense connective tissue around the entire nerve that surrounds and protect the nerve, deliver vascular supply |
| Perineurium | Connective tissue around a bundle of axons (fascicles) that Surrounds a fascicle (bundle) of axons and delivers vascular supply |
| Endoneurium | Delicate basement membrane surrounding each axon or Schwann cell |
| Meninges | Three membranes covering the neural tube |
| Only Neuroglia cell that migrated from somewhere other than brain | The microglia cell migrated from bone (bone marrow) |
| Outer thick layer of meninges | dura mater |
| (T/F) there is no Epidural space above dura matter in spinal cord | False |
| Middle layer of meninges | arachnoid matter |
| Inner layer of meninges | thin pia |
| subarachnoid space | Cavity present between arachnoid and pia matter |
| The subarachnoid space is | Filled with cerebrospinal fluid(CSF) |
| Composition of Gray matter | neurons, dendrites, and neuroglia |
| Site of synapse between neurons and dendrites | in gray matter |
| Composition of White matter | only myelinated axons, unmyelinated axons, and neuroglia |
Created by:
satya.benoit