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Cloned from: Anatomy Lab



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Front Back
attached to the anterior end of each rib where it attaches to the sternum (likely hyaline cartilage)
costal cartilage
ribs that have a costal cartilage attachment directly to sternum
true ribs (1-7)
right that are not directly attachd to the sternum, attached to the costal cartilage of the rib above
false rib (8-12)

ribs that are attached to abdominal muscle not bone
floating ribs (11-12)

type of false rib
what are division of the internal thoracic vessels
superior epigastric artery
musculophrenic artery
the interval between ribs, only a skeletal "space" since muscles actually cover it
11 intercostal spaces on each side of the thorax
superficial muscle in chest wall

elevates the ribs

"hands in pockets" muscle fiber arrangement
external intercostal muscles
middle muscle layer in chest wall

depresses the ribs

perpendicular muscle fiber direction to the muscle superficial to it
internal intercostal muscle
the deepest chest wall layer

same fiber direction as that superficial to it

attachemtns and actions similar to superficial muscle

does NOT extend as far anteriorly in the intercostal space
intermost interostal muscle
anterior to the chet wall muscles between costal cartilages

external intercostal muscle fibers can be seen as the lateral edge of this structure
external intercostal membrane
these structures run in between the internal intercostal and innemermost intercostal muscles.

what are then and in what order?
vein
artery
nerve
artery
vein
blood vesels near the lower end of the sternum on either side
internal thoracic vessels (right and left)
lining attached to the inner surface of the thoracic wall
costal pleura
the function of the pectoralis major (clavicular head)
flexes the humerus
the internal thoracic artery may also be called the
internal mammary artery
the internal mammary artery arises from the ____
subclavian artery
laterl cutaenous branch of the intercostal nerve arises from the
thoracic ventral ramus
the subclavian vein becomes the ____ at the ____ border of the _____ rib
axillary artery, lateral border, first rib
what innervates the pectoralis major/ minor and what is it a branch of
the lateral pectoral nerves

these are branches of lateral cord of brachial plexus
the diaphragm is innervated by the
phrenic nerve
cardiac notch of the (left/right) lung
left lung
what chamber forms the right border of the heart
the right atrium
what chamber forms the most sternocostal surface of the heart
the right ventricle (heart is somewhat rotated so right ventricle is anterior to the left ventricle)
what chamber forms the left border of the heart
left ventricle
what nerve passes anterior to the root of the lung
right/left phrenic nerves
what nerve runs parallel to the left common carotid artery
the left vagus nerve
this muscle in the neck has the phrenic nerve on its surface and roots of the brachial plexus emerging posterior to it
the scalenus anterior
these two tributeries merge to form the superior vena vaca
right and left brachiocephalic veins
muscles within the ventricles that are responsible for opening of the AV valves
papillary muscles
this artery originates from the subclavian artery and exists near the posterior end f the sternum
internal thoracic artery

aka internal mammary artery
the first branch off of the subclavian artery is ______
the vertebral artery
where does the vertebral artery enter the spinal colum
at the C6 transverse foramen
what chamber of the heart forms the apex
the left ventricle
these nerves arise from vagus and recurrent laryngeal nerves and lie anterior to the trachea
cardiac nerves
cardiac nerves are formed from which ganglia
cervical and upper thoracic sympathetic ganglia
what fibers transmit senestation of pain from MI
thoracic fibers of the cardiac nerves
what nerve can be seen lying on the anterior portion of the esophagus
right vagus nerve
this nerve originates from the left vagus and loops around the aortic arch
left recurrent laryngeal nerve
the jugular notch is also called the
suprasternal notch


and it is the superior indent in the manubrium
the sternal angle is at what vertebral level
T4/T5 intervertebral disc
what ribs articulate with the sternal angle
the attachments of the second costal cartilages are found here
this muscle draws the glenoid cavity anteriorly and inferiorly

it is the deeper of the two in its muscle groups
pectoralis minor muscles
the attachments of the muscle are from the coracoid process of the scapula to ribs 3-5
pectoralis minor
this muscle attaches to the distal portion of the clavicle to the mid clavicular line of the first rib
subclavius muscle
what are the joints on either ends of the clavicle
sternoclavicular join

acromioclavicular joint
this nerves attaches to the posterior sider of the pectoralis minor and goes THROUGH it to the pectoralis major
medial pectoral nerve
this is part of the clavipectoral fascia through which the cephalic vein passes through
costocoracoid membrane
what does the cephlic vein pass through on its way to the arm
costocoracoid membrane
joint between the xiphoid and the sternum
xiphisternal joint
what makes up the inferior thoracic aperature (also called what?)
also called the thoracic outlet

bounded by:
xiphisternal joint
costal margin
ribs 11 and 12
and the body of T12
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