Exam 1 Laboratory Flashcards
Identify the acromial end
End attached to the top of the shoulder (lateral end, top curved side that is not smooth)
What is this?
Pectoralis major
Recall:
Origin = Medial clavicular head
Insertion = Humerous (lateral lip)
Action: Adduction of arm, rotation of arm
What is the origin of this muscle?
Pectoralis Major
Origin = Medial clavicular head
Recall:
Origin = Medial clavicular head
Insertion = Humerous (lateral lip)
Action: Adduction of arm, rotation of arm
What is the insertion of this muscle?
Mectoralis major
Insertion = Humerous (lateral lip)
Recall:
Origin = Medial clavicular head
Insertion = Humerous (lateral lip)
Action: Adduction of arm, rotation of arm
What is the action of this muscle?
Pectoralis Major
Action: Adduction of arm, rotation of arm
Recall:
Origin = Medial clavicular head
Insertion = Humerous (lateral lip)
Action: Adduction of arm, rotation of arm
What is this muscle?
Pectoralis Minor
Deep to the pectoralis major
Recall:
Origin = Ribs 3 - 5
Insertion = Scapular coracoid process
Action = Abduction of scapula
What is the origin of this muscle?
Pectoralis Minor
Origin = Ribs 3 - 5
Recall:
Origin = Ribs 3 - 5
Insertion = Scapular coracoid process
Action = Abduction of scapula
What is the insertion of this muscle?
Pectoralis Minor
Insertion = Scapular coracoid process
Recall:
Origin = Ribs 3 - 5
Insertion = Scapular coracoid process
Action = Abduction of scapula
What is the action of this muscle?
Pectoralis Minor
Action = Abduction of scapula
Recall:
Origin = Ribs 3 - 5
Insertion = Scapular coracoid process
Action = Abduction of scapula
What muscle is this?
Serratus Anterior
(forks out along ribs inside arm pit area on the side)
Recall:
Origin = Ribs 1-8
Insertion = Scapula medial boarder
Action = abduction of scapula
What is the origin of this muscle?
Serratus anterior
Origin = Ribs 1-8
Recall:
Origin = Ribs 1-8
Insertion = Scapula medial boarder
Action = abduction of scapula
What is the insertion of this muscle?
Serratus anterior
Insertion = Scapula medial boarder
Recall:
Origin = Ribs 1-8
Insertion = Scapula medial boarder
Action = abduction of scapula
What is the action of this muscle?
Serratus anterior
Action = abduction of scapula
Recall:
Origin = Ribs 1-8
Insertion = Scapula medial boarder
Action = abduction of scapula
What is this muscle?
Deltoid
Recall:
Origin = Scapula acromion
Insertion = Humerus (deltoid tuberosity)
Action = Abduction of arm
What is the origin of this muscle?
Deltoid
Origin = Scapula acromion
Recall:
Origin = Scapula acromion
Insertion = Humerus (deltoid tuberosity)
Action = Abduction of arm
What is the insertion of this muscle?
Deltoid
Insertion = Humerus (deltoid tuberosity)
Recall:
Origin = Scapula acromion
Insertion = Humerus (deltoid tuberosity)
Action = Abduction of arm
What is the action of this muscle?
Deltoid
Action = Abduction of arm
Recall:
Origin = Scapula acromion
Insertion = Humerus (deltoid tuberosity)
Action = Abduction of arm
Identify the sternal end of the clavical
End attahed to the sternum area (more radial curve - skinnier bone diameter) - smooth
Identify the acromion process of the scapula
Projection of the spine that arches over the glanohumeral joint and articulates with the clavicle (top hook)
Identify the sternal end of the clavical
End attahed to the sternum area (more radial curve - skinnier bone diameter) - smooth
Identify the acromion process of the scapula
Projection of the spine that arches over the glanohumeral joint and articulates with the clavicle (top hook)
What is this?
Subclavius
Origin: First Rib
Insertion: Subclavian groove of the clavicle
Action: Support the clavicle
What is the origin of this structure?
Subclavius
Origin: First Rib
Insertion: Subclavian groove of the clavicle
Action: Support the clavicle
What is the insertion of this structure?
Subclavius
Origin: First Rib
Insertion: Subclavian groove of the clavicle
Action: Support the clavicle
What is the action of this structure?
Subclavius
Origin: First Rib
Insertion: Subclavian groove of the clavicle
Action: Support the clavicle
What is the following feature?
Jugular Notch
What is the following feature outlined in Green below?
Costal Margin
Name structures 1 through 8
What are the typical vs. atypical ribs
Atypical 1 - 2; 11 - 12
Typical 3 - 10
Which ribs are true, false and floating?
Identify structures
Identify Function of the structures
Identify feature
What is the name for the area of the body that is innervated by a particular nerve?
Dermatomes
Explain the bony Thorax boundary
Describe the boundaries of the thoracic cavity
How is the thoracic cavity divided?
Divided into three divisions:
2 pulmonary
one Mediastinum
Explain the division of the mediastinum. What vertebral level is this division completed at?
Level = T4
What are the contents of the levels of the mediastinum?
Identify the following features and which way the fibers run
What is the following feature?
Describe the membranous and muscular portions of the intercostal muscles.
Describe the function of the following
What are the following features?
Explain what happens to the diaphragm during breathing
Diaphram = primary muscle that makes the lungs expand
Contraction = allows the lungs to expand
Relaxation of the diaphragm = lungs to depress
The dome of the diaphragm is not even
Right side is not working Person is breathing in….
Diaphragm contracts
Phrenic nerve is not working properly on the right side for this person
What are the structures that transverse the diaphragm?
Identify the intercostal neurovascular structures
What order from superior to inferior do the neurovascular structures sit in the intercostal space?
VAN
What are the contents of the posterior mediastinum?
Thoracic aorta
Esophagus
Thoracic duct
Azygos veins
Sympathetic trunks
2 veins = Internal jugular and subclavian
Helps drain the thoracic wall
Everyone will have an Azygos vein, in the middle or right
Hemi-azygos = left throacx = lower area
Accessory hemi-azygos = upper left area
Some have them all others only just have the azygos vein
All drain into the superior vena cava
Describe the contents of the superior mediastinum?
Thymus
Greater vessels
trachea
esophagus
thoracic duct
Important nerves
Trachea
Esophagus
Thoracic duct
What are the important nerves in the superior mediastinum?
Identify the features.
What muscle(s) does the lateral and medial pectoral nerve supply?
Lateral Pectoral Nerve (superior to medial) = Pectoralis Major ONLY
Medial Pectoral Nerve = Pectoralis Major AND Pectoralis Minor
