Thorax / Breast Anatomy Flashcards
What are the four parts of the bony thorax?
Sternum
Ribs
Thoracic vertebrae
Costal cartiliages
The ribs make up the _____ borders of the bony thorax
anterior, lateral, or posterior
Lateral borders
The sternum makes up the _____ border of the bony thorax
anterior, lateral, or posterior
anterior
The thoracic vertebrae makes up the _____ boundary
anterior, lateral, or posterior
posterior
Where is the sternum bone located?
midline and anterior to the thorax
The xiphoid tip is the most inferior portion of the sternum.
True or False
True
What is the angle of louis
]hint this is part of the sternum.
Its the junction of the body (biggest part of sternum) to the manubrium (biggest part)
The manubrium is the most uppermost superior section of the sternum
True or False
True
What is the manubrium of the sternum?
uppermost superior section .
it articulates with the first two pairs of ribs and the clavicles.
How many pairs of ribs are there?
12 pairs
How many false ribs do we have?
5 pairs
The first __ pairs of ribs are called the “true ribs”
7 . 8 or 9
7 pairs are called true ribs
The 11th and 12th pair of ribs are often called ________ ribs.
Floating
The hilum of the left lung is higher than the hilum of the right lung.
True or False?
true
What is the function of valves in the heart?
to prevent backflow
The sternum, ribs and clavical are all part of the ____ thorax.
bony thorax
What is the function of the lymphatic system?
its a network of lymphatic vessels that carry lymph fluid away from tissues and into the venous circulation.
What is the main vessel of the lymphatic system?
the thoracic duct
The apex is formed by which ventricle?
Left or right?
left.
Which direction does the apex of the heart angle?
it points inferiorly, anteriorly and to the left.
10% of total cardiac volume of each beat is required solely for supply to the heart muscle.
True
Name the three layers of the heart.
Epicardium,
myocardium
endocardium
Which is the endothelial INNER layer of the heart?
endocardium
ENDO means inside.
Which layer of the heart is the middle?
and is this layer thick or thin?
Myocardium
THICK
Which level of the heart is the cardiac muscle within?
Myocardium
Name the outer layer of the heart
Epicardium
Is the left ventricle or the right ventricle the most inferior portion of the heart?
the left ventricle
it is in the apex of the heart.
The aorta gets its blood supply from the left ventricle.
True or False
True. It receives oxygenated blood from the left atrium and pumps it into the aorta.