thorax Flashcards
the superior part of the trunk located between the neck and abdomen.
thorax or chest
the second largest hollow space of the body.
thoracic cavity or chest cavity
the body’s largest hollow space
abdominal cavity
diaphragm separates
the thoracic cavity from the abdominal cavity
the thoracic cavity is protected by
the thoracic wall
- It acts as the floor of the thoracic cavity and the roof of the abdominal cavity.
the diaphragm
the primary muscle of respiration and shaped as a parachute
the diaphragm
bounds the thoracic cavity. It is formed by the skin, bones, fasciae, and muscles.
thoracic wall
Thoracic cage
bony portion of the thoracic wall
the central compartment of the thoracic cavity, located between the two pleural sacs.a membranous partition between two body cavities or two parts of an organ, especially that between the lungs.
mediastinum
the mediastinum is divided into
two parts by an imaginary line, superior and inferior mediastinum
extend between the sternal angle (the angle formed by the junction of the sternal body and manubrium) and the T4 vertebrae.
the imaginary line
extends upwards, terminating at the superior thoracic aperture
superior mediastinum
inferior mediastinum
extends downwards, terminating at the diaphragm
the inferior mediastinum is subdivided into
3 parts, anterior, middle and posterior mediastinum
contains the heart, and its protective sheath, the pericardium. غشاء القلب
the middle mediastinum
Thoracic Apertures
has how many major openings
two major openings, the superior thoracic (inlet) aperture and inferior thoracic aperture(outlet)
the superior thoracic aperture
found superiorly and opens toward the neck
located inferiorly. It is almost completely covered by the diaphragm, separating it from the abdominal cavity.
the inferior thoracic aperture
the skeleton is divided into
axial and appendicular
axial skeleton contains
skull, thoracic cage and the vertebral column
the appendicular skeleton contains
the upper limbs, shoulder girdle , lower limbs and pectoral girdles
the thoracic wall contains how many bones
25
12 pairs of ribs and
associated costal cartilages
12 thoracic vertebrae
and the sternum
a flat bone located at the anterior aspect of the thorax.
It lies in the midline of the chest and has a ‘T’ shape.
sternum