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Anatomy Exam 2 (Thoracic Cavity)
Terms in this set (27)
Thoracic cavity, Central compartment is called the _____, 2 openings in thoracic cavity called ________ and _____.
(chest cavity) protected by thoracic wall (rib cage and muscle, fascia), central compartment called mediastinum, superior thoracic aperture (Thoracic inlet), Inferior thoracic aperture (Thoracic outlet)
Thoracic wall is the ______. Thoracic cage is the _______.
wall: boundary of thoracic cavity
Cage: the bony framework that surround the internal viscera, soft tissue and organs
Thoracic skeleton Is composed of _____. The pectoral girdle is made up of ____ and the ____.
sternum, 12 pairs of ribs and costal facets, 12 pairs of thoracic vertebrae and intervertebral discs. scapula and clavicle
Identify the anterior Thoracic cavity
Identify the posterior Thoracic cavity
The ____ to ____ ribs are what is known as "typical ribs"
3-9, have typical characteristics (body, head neck tubercle)
__ types of bone marrow, ribs attach to sternum by ____.
3: grey red, and yellow
The "atypical ribs" are ______. Describe them.
1: horizontal and shortest, has two facets and 2 transverse grooves for subclavian vessels separated by scalene tubercle.
2: has 2 facets articulation with T1-2, has tuberosity for serratus anterior
10-12: have one facet in articulation for vertebrae
11+12: have no neck or tubercle
Costovertebral joints of a typical rib
includes the joint of the head which articulates with 2 adjacent vertebral bodies, and the costotransverse joint which tubercle articulates with 2 transverse processes of vertebrae, rib moves around axis that rotates the head
Angle of Lewis is at ____, 1-7 rib attachments vs 11-12
1-7 its two ribs, 8-10 attach to superior cartilage (cartilage to cartilage joints), 11-12 don't attach to any structures floating ribs and their tips are embedded in muscle of anterior muscle wall
Sternum body composed of ______ vertebrae
Thoracic Aperture, Rib ___ attaches to superior xiphoid process
Superior: between thorax and neck/limbs
Inferior: between thorax and abdominal cavities separated by diaphragm
Thorax ___ and ribs ____ during inspiration
Thorax ____ and ribs _____ during expiration
expands and elevates
narrows and depresses
Does volume of the closed space change in thoracic cavity during breathing?
yes because of the change of position of thoracic cavity
The true muscles of thoracic wall are?
levatores costarium- muscle of proprioception
intercostal and subcostal
Intercostal space contents, what contains the neurovascular bundle on intercostal space?
contains its own network of nerves, blood vessels, and veins
Groove of rib located on posterior inferior aspect of ridge this groove covers neurovascular bundle of intercostal space
Chart of muscles of thoracic wall. See if you can become great and name them all, for the name of AESTHETICS!
Phrenic nerve C3-C5 segments
paralysis- hemiparalysis of diaphragm
liver on right not on left why it reaches intercostal 6
Very important muscle bc it is a landmark between thoracic cavity and abdominal cavity
Pleura covers diaphragm
has three attachment
Esophagus is in muscular part
Drainage through vein in blood supply through aorta is compressed by breathing- important
Esophagus constricts during breathing
Sympathetic trunk through the lateral portion
one of the main common diseases, part of the esophagus is still in the thoracic cavity but small part in abdominal cavity that part can go up through opening an provide unpleasant pain in chest
Dermatomes of Thoracic cavity
Intercostal arteries travel _____. Anterior intercostal provides anastomotic connection from the _____.
posteriorly, internal thoracic artery
All veins of thoracic wall drain into the _______. They do or do not have valves?
superior vena cava, do not.
bed of breast for females extends from the ___ to the ___ rib.
2nd to sixth.
breast is a modified __gland. Identify these structures from a sagittal dissection of breast tissue.
Most lymphatic drainage of breast goes back into circulation through the ______duct. ducts are usually on the ___. Axillary fossa has __ lymph nodes examination is at ____degrees.
Thoracic, left, 4?, 90
Right or left lobe is smaller? how many lobes for each? ____ separates the lobes,
Left is smaller (right has three lobes and heart on left), left has 2 lobes, fissures separate lobes, Horizontal fissure separates mid and inferior lobe at right lung at rib level 4
All of us have ____ lungs due to _____ and ____.
black lungs, pollution and temperature
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