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Keri Bills Ant Asmt2
Weeks 6-7 Anatomy Review
| Question | Answer |
|---|---|
| What are Neurolemma? | Plasma membrane of Schwann cells, also known as the plasma membrane of neural tissue. |
| What is the neural glia? | Support cells in nervous system, provide support, protection, and speed up action potentials. |
| What does Schwann cells do? | They are in the In peripheral nervous system and provide myelin sheathing to neurons. |
| What are Astrocytes? | Star-shaped cells that maintain environment around neurons, form blood brain barrier. |
| What are Oligodendrocytes? | Cells in central nervous system that form myelin sheath around axons, increasing speed of action potentials. |
| What do Microglia do? | They are immune cells of the brain and central nervous system, engulf foreign substances and debris. |
| What do Ependymal cells do? | They line the ventricles of the brain and are responsible for creating cerebrospinal fluid. |
| What is the Myelin sheath? | Insulates the axons and increases speed of action potential propagation. |
| Aproximate the number of neurons in a human brain. | About 85 billion. |
| True False? In the human nervous system, there are almost equal numbers of glia cells and neurons? | True |
| Fascicles are held together by a connective tissue layer called? | Perineurium. |
| Nerves that mostly contain afferent fibers are called ___ Nerves? | Sensory |
| What does the autonomic nervous system stimulate? | Smooth muscle, gland, cardiac muscle. |
| Astrocytes attach to? | Neurons and blood vessels. |
| The largest and most abundant type of glia? | Atrocytes. |
| How do astrocytes feed neurons? | By picking up glucose from the blood, converting it to lactate and passing it along to the neurons that they are connected to. |
| What helps hold nerve fibers together? | Oligodendrocytes. |
| Which glia cells carry out phagocytosis? | Microglia. |
| What number of extension from the cell body do Multipolar neurons have? | One Axon, several dendrites. |
| What number of extension from the cell body do bipolar neurons have? | One axon, highly branched dendrite. |
| Where are bipolar neurons found? | Retina of the eye, inner ear, olafactory pathways. (sense of smell) |
| What number of extension from the cell body do unipolar neurons have? | A single process extending from the cell body. Unipolar neurons are always sensory neurons, toward the CNS. |
| Characteristics of tracts or (bundles of nerve fibers)? | Do not have connective tissue, Originate from the PNS. Are not called nerves. |
| What is a telodendria? | The distal tips of axons that form branches and terminate in a synaptic knob. |
| What is an axon hillock? | A single process that usually expends from a tapered portion of the cell body. |
| What are T cells? | Lymphocytes, formed in the thymus gland, that act on antigens. |
| An immune response in which T cells destroy antigens? | Cell mediated |
| Where are inquinal nodes location? | Groin |
| Name for anti-viral proteins secreted by T- cells? | Interferon |
| What are transformed B cells that secrete antibodies? | Plasma cells |
| Where does the terminal ileum join the large intestine? | At the ileocecal valve in the RLQ. |
| Name the four major parts of the large intestine? | Cecum, colon, rectum and anal canal |
Created by:
kbills
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