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HSCI 3000 - Week 4 Notes

by: Nancy Kanarski

HSCI 3000 - Week 4 Notes HSCI

Marketplace > East Tennessee State University > HSCI > HSCI 3000 Week 4 Notes
Nancy Kanarski
GPA 3.97

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About this Document

Include muscles of thoracic cage, veins, and lymph ducts
Human Anatomy
Class Notes
Human, anatomy, Thorax
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This 1 page Class Notes was uploaded by Nancy Kanarski on Friday September 16, 2016. The Class Notes belongs to HSCI at East Tennessee State University taught by Forsman in Fall 2016. Since its upload, it has received 7 views.


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Date Created: 09/16/16
Human Anatomy September 15 THORAX Muscles  External intercostal mm. – 21 mm. (11 pairs) o Fiber direction: inferomedially (down toward midline) o Function: muscle of inspiration (lifts ribs superiorly, elevates ribs)  Internal intercostal mm. o Fiber direction: superomedially (up toward midline) on anterior lateral side of the  body o Function: muscle of expiration (depresses ribs)  Innermost internal intercostal mm. o Function: muscle of expiration (depresses ribs)  Transverse thoracis m. o Function: muscle of expiration (depresses ribs) Veins  Right side: internal intercostal veins  drain into azygos vein  superior vena cava   heart  Left side: internal intercostal veins  drain into hemiazygos vein  crosses to azygos vein  superior vena cava  heart  o (Also in some people, also uses accessory hemiazygos vein) Lymph (feed cells)  Right lymphatic duct: drains right side of head and neck from the diaphragm and up  Thoracic duct: drains lefts side of head and neck from diaphragm and up AND below  diaphragm on right and left sides Other Hiatus: opening in diaphragm  Left and right crus: help kink the esophageal tube to keep food from coming up when we  inhale and increase pressure in the stomach 


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