Exam 1 Laboratory

Question 1

Identify the acromial end

Answer 1

End attached to the top of the shoulder (lateral end, top curved side that is not smooth)

Question 2

What is this?

Answer 2

Pectoralis major

Recall:

Origin = Medial clavicular head

Insertion = Humerous (lateral lip)

Action: Adduction of arm, rotation of arm

Question 3

What is the origin of this muscle?

Answer 3

Pectoralis Major

Origin = Medial clavicular head

Recall:

Origin = Medial clavicular head

Insertion = Humerous (lateral lip)

Action: Adduction of arm, rotation of arm

Question 4

What is the insertion of this muscle?

Answer 4

Mectoralis major

Insertion = Humerous (lateral lip)

Recall:

Origin = Medial clavicular head

Insertion = Humerous (lateral lip)

Action: Adduction of arm, rotation of arm

Question 5

What is the action of this muscle?

Answer 5

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

Question 6

What is this muscle?

Answer 6

Pectoralis Minor

Deep to the pectoralis major

Recall:

Origin = Ribs 3 - 5

Insertion = Scapular coracoid process

Action = Abduction of scapula

Question 7

What is the origin of this muscle?

Answer 7

Pectoralis Minor

Origin = Ribs 3 - 5

Recall:

Origin = Ribs 3 - 5

Insertion = Scapular coracoid process

Action = Abduction of scapula

Question 8

What is the insertion of this muscle?

Answer 8

Pectoralis Minor

Insertion = Scapular coracoid process

Recall:

Origin = Ribs 3 - 5

Insertion = Scapular coracoid process

Action = Abduction of scapula

Question 9

What is the action of this muscle?

Answer 9

Pectoralis Minor

Action = Abduction of scapula

Recall:

Origin = Ribs 3 - 5

Insertion = Scapular coracoid process

Action = Abduction of scapula

Question 10

What muscle is this?

Answer 10

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

Question 11

What is the origin of this muscle?

Answer 11

Serratus anterior

Origin = Ribs 1-8

Recall:

Origin = Ribs 1-8

Insertion = Scapula medial boarder

Action = abduction of scapula

Question 12

What is the insertion of this muscle?

Answer 12

Serratus anterior

Insertion = Scapula medial boarder

Recall:

Origin = Ribs 1-8

Insertion = Scapula medial boarder

Action = abduction of scapula

Question 13

What is the action of this muscle?

Answer 13

Serratus anterior

Action = abduction of scapula

Recall:

Origin = Ribs 1-8

Insertion = Scapula medial boarder

Action = abduction of scapula

Question 14

What is this muscle?

Answer 14

Deltoid

Recall:

Origin = Scapula acromion

Insertion = Humerus (deltoid tuberosity)

Action = Abduction of arm

Question 15

What is the origin of this muscle?

Answer 15

Deltoid

Origin = Scapula acromion

Recall:

Origin = Scapula acromion

Insertion = Humerus (deltoid tuberosity)

Action = Abduction of arm

Question 16

What is the insertion of this muscle?

Answer 16

Deltoid

Insertion = Humerus (deltoid tuberosity)

Recall:

Origin = Scapula acromion

Insertion = Humerus (deltoid tuberosity)

Action = Abduction of arm

Question 17

What is the action of this muscle?

Answer 17

Deltoid

Action = Abduction of arm

Recall:

Origin = Scapula acromion

Insertion = Humerus (deltoid tuberosity)

Action = Abduction of arm

Question 18

Identify the sternal end of the clavical

Answer 18

End attahed to the sternum area (more radial curve - skinnier bone diameter) - smooth

Question 19

Identify the acromion process of the scapula

Answer 19

Projection of the spine that arches over the glanohumeral joint and articulates with the clavicle (top hook)

Question 20

Identify the sternal end of the clavical

Answer 20

End attahed to the sternum area (more radial curve - skinnier bone diameter) - smooth

Question 21

Identify the acromion process of the scapula

Answer 21

Projection of the spine that arches over the glanohumeral joint and articulates with the clavicle (top hook)

Question 22

What is this?

Answer 22

Subclavius

Origin: First Rib

Insertion: Subclavian groove of the clavicle

Action: Support the clavicle

Question 23

What is the origin of this structure?

Answer 23

Subclavius

Origin: First Rib

Insertion: Subclavian groove of the clavicle

Action: Support the clavicle

Question 24

What is the insertion of this structure?

Answer 24

Subclavius

Origin: First Rib

Insertion: Subclavian groove of the clavicle

Action: Support the clavicle

Question 25

What is the action of this structure?

Answer 25

Subclavius _Origin:_ First Rib _Insertion:_ Subclavian groove of the clavicle _Action:_ Support the clavicle

Question 26

What is the following feature?

Answer 26

Jugular Notch

Question 27

What is the following feature outlined in Green below?

Answer 27

Costal Margin

Question 28

Name structures 1 through 8

Answer 28

Question 29

What are the typical vs. atypical ribs

Answer 29

Atypical 1 - 2; 11 - 12 Typical 3 - 10

Question 30

Which ribs are true, false and floating?

Answer 30

Question 31

Identify structures

Answer 31

Question 32

Identify Function of the structures

Answer 32

Question 33

Identify feature

Answer 33

Question 34

Answer 34

Question 35

Answer 35

Question 36

Answer 36

Question 37

Answer 37

Question 38

What is the name for the area of the body that is innervated by a particular nerve?

Answer 38

Dermatomes

Question 39

Explain the bony Thorax boundary

Answer 39

Question 40

Describe the boundaries of the thoracic cavity

Answer 40

Question 41

How is the thoracic cavity divided?

Answer 41

Divided into three divisions: 2 pulmonary one Mediastinum

Question 42

Explain the division of the mediastinum. What vertebral level is this division completed at?

Answer 42

Level = T4

Question 43

What are the contents of the levels of the mediastinum?

Answer 43

Question 44

Identify the following features and which way the fibers run

Answer 44

Question 45

What is the following feature?

Answer 45

Question 46

Describe the membranous and muscular portions of the intercostal muscles.

Answer 46

Question 47

Describe the function of the following

Answer 47

Question 48

What are the following features?

Answer 48

Question 49

Explain what happens to the diaphragm during breathing

Answer 49

Diaphram = primary muscle that makes the lungs expand Contraction = allows the lungs to expand Relaxation of the diaphragm = lungs to depress

Question 50

Answer 50

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

Question 51

What are the roots of the phrenic nerve?

Answer 51

C3 to C5

Question 52

What are the structures that transverse the diaphragm?

Answer 52

Question 53

Identify the intercostal neurovascular structures

Answer 53

Question 54

What order from superior to inferior do the neurovascular structures sit in the intercostal space?

Answer 54

VAN

Question 55

What feature innervates the intercostal muscles?

Answer 55

intercostal nerve

Question 56

What are the contents of the posterior mediastinum?

Answer 56

Thoracic aorta Esophagus Thoracic duct Azygos veins Sympathetic trunks

Question 57

Answer 57

Question 58

Answer 58

2 veins = Internal jugular and subclavian

Question 59

Answer 59

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

Question 60

Describe the contents of the superior mediastinum?

Answer 60

Thymus Greater vessels trachea esophagus thoracic duct Important nerves

Question 61

Answer 61

Question 62

Answer 62

Question 63

Answer 63

Question 64

Answer 64

Question 65

Answer 65

Trachea

Question 66

Answer 66

Esophagus

Question 67

What nerve forms the esophageal plexus?

Answer 67

Vagus nerves

Question 68

Answer 68

Thoracic duct

Question 69

What are the important nerves in the superior mediastinum?

Answer 69

Question 70

Identify the features.

Answer 70

Question 71

What muscle(s) does the lateral and medial pectoral nerve supply?

Answer 71

**Lateral Pectoral Nerve** (superior to medial) = Pectoralis Major ONLY **Medial Pectoral Nerve** = Pectoralis Major AND Pectoralis Minor

Question 72

Answer 72

Question 73

Answer 73