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"True Ribs"?
Ribs 1-7
"False Ribs"?
Ribs 8-10
"Floating Ribs"?
Ribs 11-12
How do the vessels run under the ribs superiorly to inferiorly?
Vein
Artery
Nerve
Sternum Landmarks:
Manubrium
Level of T3-T4 vertebral bodies
Sternum Landmarks:
Suprasternal notch
Level of the inferior border of T2 vertebral body
Sternum Landmarks:
Sternal Angle
Level of disc between T4 & T5
Sternum Landmarks:
Body
Between T5-T9 vertebral bodies
Sternum Landmarks:
Xiphoid process
Level of T10 vertebral body
Sternum Landmarks:
Xiphisternal joint
Inferior Border of T9
Type of movement for elevation of the ribs in respiration?
"Bucket Handle" movement
Type of movement for elevation of sternum in respiration?
"Pump handle" movement
Boundaries of thoracic aperture? (3)
1st thoracic vertebra
1st pair of ribs
Superior border manubrium
Structures passing through superior thoracic aperture? (4)
Trachea
Esophagus
Nerves
Vessels
What closes the inferior thoracic aperture?
Diaphragm
Structures passing through inferior thoracic aperture? (3)
Esophagus
Inferior Vena Cava
Aorta
Boundaries of inferior thoracic aperture? (4)
12th thoracic vertebra
11th & 12th ribs
Costal cartilages of ribs 7-10
Xiphisternal joint
Intercostal muscles for quiet breathing? (3)
External intercostals
Internal intercostals
Innermost intercostals
Action of the subcostal muscles?
Elevate ribs
Transversus thoracis muscles perform which actions on ribs?
Weak depression
*Proprioception
Ventral rami T1-T11?
Intercostal Nn.
Ventral rami T12?
Subcostal N.
The Azygos System drains which side of the body's venous blood?
RIGHT
Blood draining from the LEFT side of the body enters which vein?
Hemiazygos V.
Where does the Azygos V. empty?
Superior Vena Cava
3 compartments of the thoracic cavity?
(2) Pulmonary cavities - contain lungs & pleurae
(1) Mediastinum cavity - contains all other thoracic structures
T/F: The Visceral Pleura has sensory nerve fibers?
True
False
FALSE: NO sensory nerve fibers
T/F: The Parietal Pleura contains sensory nerve fibers?
True
False
TRUE
What is the point of entry into the lungs?
Hilum
How many lobes are in the (R) lung?
3
How many lobes are in the (L) lung? Why?
2 b/c of heart occupying more space on (L) side
In the (R) lung, which fissure separates the middle & inferior lobes?
Oblique fissure
In the (R) lung, which fissure separates the middle & superior lobes?
Horizontal fissure
The pulmonary arteries carry what type of blood to the lungs?
Deoxygenated
The pulmonary veins carry what type of blood to the heart?
Oxygenated
Which artery carries nutrients and oxygen to the lung tissue? Which vein drains lung tissue?
Bronchial A. & V.
At what level does the Trachea split into the (R) & (L) Main Bronchi?
Sternal angle
Which main bronchus is more prone to pneumonia? Why?
RIGHT; more vertical
Parasympathetic innervation of thoracic cavity?
Vagus N. (CN X)
(Craniosacral)
Sympathetic innervation to thoracic cavity?
Sympathetic trunks
(Thoracolumbar)
Bronchoconstriction & vasodilation occurs with which system?
Parasympathetic
Bronchodilation & vasoconstriction occurs with which system?
Sympathetic/"Fight-or-Flight"
What type of CT is the fibrous pericardium?
Dense Fibrous CT
Function of fibrous pericardium?
Resists sudden overfilling of heart
What is the inner surface of the fibrous pericardium?
Parietal layer of serous pericardium
Outer layer parietal pericardium?
Visceral layer of serous pericardium
Sensory innervation to pericardium?
Phrenic N.
3 layers of the heart from inside to outside?
Endocardium
Myocardium
Epicardium
Location of heart?
Between ribs 3-5 posterior to sternum
2/3 to (L) of midline; 1/3 to (R) of midline
Apex of heart?
Inferolateral part of (L) ventricle lies posterior to (L) 5th intercostal space
Base of heart primarily composed of which atrium?
LEFT
Which atrium faces posteriorly toward the vertebral bodies T6-T9?
RIGHT
The (R) atrium receives venous blood from? (3)
Superior Vena Cava
Inferior Vena Cava
Coronary Sinus
Smooth posterior part of (R) atrium?
Sinus Venarum
Rough anterior part of (R) atrium?
Pectinate muscles
Separates ant/post walls of (R) atrium?
Christa Terminalis
Interatrial wall of (R) atrium contains this structure as remnants of the fetal Foramen Ovale?
Fossa Ovalis
Muscular elevations of inner wall of (R) & (L) ventricles?
Trabeculae Carnae
Valve between (R) atrium & ventricle?
Tricuspid valve
"String-like" attachments to tricuspid valve?
Chordae Tendineae
Which muscles attach the chordae tendineae from each cusp to the ventricle wall?
Papillary muscles
"Moderator band" of the (R) ventricle?
Septomarginal Trabecula
Which valve is between the pulmonary trunk and (R) ventricle?
Pulmonary Valve @ level of 3rd costal cartilage
(L) atrium receives oxygenated blood from where?
4 pulmonary veins from lungs
Valve between (L) atrium & ventricle?
Mitral valve (2 cusps)
Why is the (L) ventricle 2x thicker than the (R)?
B/C it has to pump blood to the rest of the body.
Valve between the (L) ventricle & ascending aorta?
Aortic valve
1st branches of the ascending aorta that supply the myocardium & epicardium?
(R) & (L) Coronary Aa.
The (R) Coronary A. supplies what? (6)
(R) atrium
Most of (R) ventricle
Diaphragmatic surface of (L) ventricle
Posterior 1/3 Interventricular (IV) septum
SA node (in 60% of people)
AV node (in 80% of people)
The (L) Coronary A. supplies what? (5)
(L) atrium
Most of (L) ventricle
Part of (R) ventricle
Most of IV septum/AV bundle
SA node (in 40% of people)
Where does the venous blood drain out of the heart?
Coronary Sinus
"Pacemaker" located at junction of SVC & (R) atrium?
SA node
Located at posteroinferior region of interatrial septum & distributes signal from SA node to ventricles via AV bundle?
AV node
Bridge between atrial & ventricular myocardium/(R) & (L) bundles?
AV bundle
T/F: Sympathetic innervation of heart increases HR & force of contraction?
True
False
TRUE
T/F: Parasympathetic innervation of the heart is by the Vagus N, decreases HR/force of contraction and constricts the Coronary Aa?
True
False
TRUE
Author
alison.cygan
ID
312210
Card Set
Thorax
Description
Thoracic region
Updated
11/30/2015, 4:23:49 AM
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