What is the main muscle of respiration, and what separates the thorax from the
abdomen? - Answer Diaphragm
Muscles on the inferior border of the ribs - Answer Intercoastal
What muscle assists in inspiration? - Answer Serratus posterior superior
What muscle assists in expiration? - Answer Serratus posterior inferior
What muscles are on the anterior and lateral walls of the thoracic, associated With
Movement of Upper Extremity? - Answer Pectoralis, subclavius, Serratus anterior
What makes up the bony thorax? - Answer Thoracic vertebrae, ribs, sternum, costal
cartilage
What level is the sternal angle? - Answer T4-T5
The superior aperture of the chest (thoracic inlet) is formed by? - Answer 1st thoracic
vertebra, the first ribs and their costal cartilage, and the manubrium.
The thoracic inlet (superior aperture) allows for the passage of? - Answer Nerves,
vessels, and viscera from the neck into the thoracic cavity.
The inferior aperture of the chest (thoracic outlet) is formed by? - Answer 12th thoracic
vertebra, 12th pair of ribs, and costal margins & xiphoid sternal junction.
The lungs are divided into lobes by thin structures called? - Answer Fissures
The right lung has how many lobes? - Answer 3 lobes (superior, middle, inferior)
The left lung has how many lobes? - Answer 2 lobes (superior and inferior)
The hilum is the passage for? - Answer Mainstem bronchi, blood vessels, and lymph
vessels
What encloses each lung? - Answer Pleural cavity
What does the pleura produce? - Answer Pleural fluid
continuous with the thoracic wall and diaphragm, moves with respiration - Answer
Parietal pleura
inner layer that covers the outer surface of the lung - Answer Visceral pleura
, What is pleural effusion? - Answer Fluid in the pleural space
What level does the trachea bifurcate into the left and right mainstem (primary) bronchi?
- Answer T5 (carina)
Where does the mainstem bronchi divide into secondary bronchi? - Answer The hilum
What are the secondary bronchi associated with? - Answer Each lobe of the lung
The secondary bronchi divide into? - Answer The tertiary bronchi
Where is the mediastinum located? - Answer The region located between the lungs
The mediastinum composes what? - Answer The thymus gland, heart and great vessels,
trachea and esophagus, thoracic duct, and lymph nodes
The thymus is a triangular shaped gland located where? - Answer In the superior portion
of the mediastinum behind the manubrium
What does the thymus produce? - Answer Lymphocytes
which plays an important role in the maintenance and development of the immune
system
The thymus is large in children and gradually __ in size with aging - Answer Decreases
The middle compartment of the mediastinum contains? - Answer Heart and pericardium
Ascending and transverse arch of the aorta
Brachiocephalic arteries and veins
Pulmonary arteries and veins
Trachea and main bronchi
The posterior compartment of the mediastinum contains? - Answer Descending thoracic
vertebra
Esophagus
Thoracic duct
Lymph nodes
Azygos and hemiazygos
What surrounds the heart which lubricates it as it beats? - Answer Pericardium
Epicardium is located where? - Answer Between the pericardium and the heart wall
The heart lies at a __ degree angle. - Answer 45
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