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Jersey College A&P Final Exam Questions and Answers Latest Update Fully Solved 100%
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Oligodendrocytes - Form myelin sheath in CNS Microglia - Act as phagocytes to remove pathogens, impurities, and dead neurons Ependymal - A type of CNS supporting cell; lines the central cavities of the brain and spinal cord; synthesize CSF and promote its movement cervical nodes - located in th...

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  • 12 augustus 2024
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  • 2024/2025
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Voorbeeld van de inhoud

Jersey College A&P Final Exam
Oligodendrocytes - Form myelin sheath in CNS



Microglia - Act as phagocytes to remove pathogens, impurities, and dead neurons



Ependymal - A type of CNS supporting cell; lines the central cavities of the brain and spinal cord;
synthesize CSF and promote its movement



cervical nodes - located in the neck in deep and superficial groups, drain parts of head and neck



axillary nodes - located in armpits



what are the parts of the lymphatic system? - tonsils, thymus, spleen, peyer patch, small intestine,
appendix, lymph nodes and vessels



functions of the lymphatic system - fluid balance, protection, and absorption of fats



lymphatic circulation is - one-way system that begins in the tissues and ends when the lymph joins
the blood



lymphatic capillaries - walls (endothelium) flattened epithelial cells, more permeable, cells overlap
slightly, forming one-way valves, lacteals absorb fat, arise blindly (closed at one end)



lymphatic vessels - include superficial and deep sets, right lymphatic duct and thoracic duct



right lymphatic duct - short vessel receives only lymph that comes from the body's superior right
quadrant and empties into right subclavian vein near heart

,thoracic duct - receives lymph from all parts of the body except those superior to the diaphragm
on the right side; drains into thee left subclavian vein



cisterna chyli - first part of the thoracic duct enlarged to form cistern or a temp storage pouch

what is the lymphatic system? - system of tissues and vessels scattered throughout the body and
services almost all regions



movement of lymph toward heart is caused by: - valves in lymphatic vessels

contraction of lymphatic vessels

skeletal muscle contraction

breathing



roughly how many lymph nodes are in the body? - about 600



lymphoid tissue - distributed throughout the body and makes up specialized organs



lymph nodes - small masses of lymphatic tissue that filter the lymph



lymph - fluid that circulates in the lymphatic system, clear fluid;



hilum - indented area that is the exit point for efferent lymphatic vessels carrying lymph out of the
node



tracheobronchial nodes - near the trachea and around the larger bronchial tubes



mesenteric nodes - found between the two layers of peritoneum that form the mesentry, 100-150
nodes



Inguinal nodes - located in groin region, receive lymph drainage from lower extremities and from
external reproductive organs

, buboes - enlarged Inguinal nodes



the spleen - cleanses blood through filtration and phagocytosis, destroys old blood cells, produces
red blood cells before birth, serves as a reservoir for blood



splenectomy - surgical removal of the the spleen



lacteals - specialized lymphatic capillaries in the lining of the small intestine that absorb fats



the thymus - plays a role in early immune system development, t cells mature, shrinks after
puberty, produce thymosin



appendix - fingerlike tube of lymphatic tissue that figures into the development of immunity



Mucosal-associated lymphoid tissue (MALT) - important barrier against infection; found in
portions of digestive, respiratory, and urogenital mucosal linings; helps to destroy contaminants by
means of phagocytosis and production of antibodies



gut-associated lymphoid tissue (GALT) - largest aggregations of MALT found in the digestive tract



tonsils - protect against inhaled or ingested contaminants; trap pathogens;surgery to treat if
become infected or swollen and reoccurs which makes swallowing and breathing difficult



palatine tonsils - oval bodies located at each side of the soft palate; generally what one refers to
as "tonsils"



pharyngeal tonsil - commonly called adenoid; located behind the nose on the posterior wall of
pharynx

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