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Clinical Anatomy 2021 > Intro to Thorax > Flashcards

Intro to Thorax Flashcards

1
Q

Which joint classification are Costovertebral, Costotransverse and sternocostal?

A

Synovial classification-plane

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2
Q

External intercostal

A

ATTACHMENTS- from rib to rib oriented from superior-lateral to inferior-medial [down and in]

ACTIONS- elevation of ribs

INNERVATION- intercostal nerve (segmental)

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3
Q

Internal & innermost intercostal

A

ATTACHMENTS- from rib to rib oriented superior-medial to inferior-lateral [down and out]

ACTIONS- depression of ribs

INNERVATION- intercostal nerve (segmental)

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4
Q

Transversus thoracis

A

ATTACHMENTS- from posterior sternum to costal cartilages

ACTIONS- depress ribs

INNERVATION- intercostal nerves (segmental)

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5
Q

Diaphragm (C3-5)

A

ATTACHMENTS- from xiphoid process, inner surface of the lower ribs & costal cartilages, lumbar vertebrae via the crura to the central tendon

ACTIONS- inspiration (negative thoracic pressure by inferior displacement)

INNERVATION- phrenic nerve

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6
Q

Cervical plexus (most nerves derived fro plexus are included in Head and Neck)

A 
Phrenic nerve (C3-5)
function- sensory & postganglionic sympathetic innervation to pericardium & central tendon (& adjacent pleura & peritoneum); motor & postganglionic sympathetic innervation to diaphragm
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7
Q

Dorsal primary ramus

A
  1. Medial branch
    function- sensory & postganglionic sympathetic innervation to back muscles & overlying skin; motor innervation of midline deep back muscles and facet joints
  2. Lateral branch
    function- sensory & postganglionic sympathetic innervation to back muscles & overlying skin; motor innervation of deep and superficial back muscles
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8
Q

Intercostal n. (T1-6; aka upper intercostals nerves)

A

function- sensory & postganglionic sympathetic innervation to intercostal muscles, parietal pleura & skin; motor innervation of intercostal muscles

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9
Q

Lateral cutaneous branch of Intercostal

A

function- sensory & postganglionic sympathetic innervation of skin overlying lateral aspect of intercostal space

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10
Q

Anterior cutaneous branch of intercostal

A

function- sensory & postganglionic sympathetic innervation of skin overlying anterior aspect of intercostal space

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11
Q

Collateral branch of intercostal

A

function- redundant with remainder of nerve

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12
Q

Intercostobrachial n. (T2 only) of intercostal

A

function- sensory & postganglionic sympathetic innervation of skin overlying proximal, medial aspect of arm

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13
Q

Thoracoabdominal n. (T7-11) [aka lower intercostal nerves]

A

function- sensory & postganglionic sympathetic innervation to intercostal muscles, anterior abdominal muscles, peripheral diaphragm, parietal pleura; motor innervation of intercostal muscles and muscles of anterior abdominal wall

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14
Q

Lateral cutaneous branch of Thoracoabdominal

A

function- sensory & postganglionic sympathetic innervation of skin overlying lateral aspect of intercostal space & adjacent anterior abdominal wall

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15
Q

Anterior cutaneous branch of Thoracoabdominal

A

function- sensory & postganglionic sympathetic innervation of skin overlying rectus abdominis muscle

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16
Q

Collateral branch of Thoracoabdominal

A

function- redundant with remainder of nerve

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17
Q

Subcostal nerve (T12)

A

function- sensory & postganglionic sympathetic innervation to skin overlying lateral and anterior abdominal wall, muscles of anterior abdominal wall; motor innervation of muscles of anterior abdominal wall

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18
Q

What structure serves as a boundary between the thoracic and abdominal cavities?

A

Diaphragm- inferior

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19
Q

The 9th rib has indirect cartilaginous attachment to the sternum, making it what type of rib?

A

False

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20
Q

What rib joint is formed between the head of the rib and body of the vertebra?

A

Costovertebral

21
Q

What bony landmark is formed at the union of the manubrium and body of the sternum?

A

Sternal Angle

22
Q

What dermatome of the thorax corresponds to skin over the xiphoid process?

A

T6

23
Q

What rib joint is formed between the costal tubercule and the transverse process?

A

Costotransverse

24
Q

What rib joint is formed between the sternum and costal cartilage?

A

Sternocostal

25
Q

What dermatome of the thorax corresponds to include the nipple?

A

T4

26
Q

What dermatome of the thorax corresponds to include the umbilicus?

A

T10

27
Q

The 3rd rib has direct cartilagenous attachment to the sternum making it what type of rib?

A

True

28
Q

The 11th and 12th rib have no attachment to the sternum, making it which type of rib?

A

Floating

29
Q

What are the boundaries and general contents of the thoracic cavity?

A

Posterior: spine
Anterior: sternum
Inferior: diaphragm
Superior: superior thoracic aperature

contains primary organs of respiratory and cardiovascular systems

30
Q

What are the compartments of the thoracic cavity?

A
  • right pleural cavity
  • inferior mediastinum
  • left pleural cavity
  • superior mediastinum
  • diaphargm
31
Q

What are the component and functions of the thoracic wall?

A

Components: skin, subcutaneous tissue, ribs, intercostal muscles

functions: protection, respiration, muscle attachment

32
Q

Describe the 3 different types of ribs

A

True: 1-7, direct cartilagenous attachment to sternum

False: 8-10, connect to sternum indirectly

Floating- 11 and 12, no attachment to sternum

33
Q

Describe the thoracic wall innervation

A

T1-T6: upper intercostal
T7-T11: lower intercostal
T12: subcostal

34
Q

What are the contents of the breast?

A

Lobes of mammary glands, fibrous tissue, fatty matrix, blood vessels, lymphatics, nerves

35
Q
  1. The intercostal nerves, arteries and veins are positioned _____ to the internal intercostal muscles
A

deep

36
Q
  1. The intercostal veins, arteries, and nerves are all positioned directly ____ to the ribs.
A

inferior

37
Q
  1. The internal thoracic artery is positioned ____ to the first six costal cartilages.
A

posterior (deep)

38
Q
  1. The left phrenic nerve passes _____ to the root of the left lung
A

anterior

39
Q
  1. The left phrenic nerve is positioned _____ to the pericardial sac.
A

lateral

40
Q
  1. The left phrenic nerve passes ____ to the ascending aorta.
A

lateral

41
Q
  1. The right phrenic nerve is positioned _____ to the superior vena cava.
A

lateral

42
Q
  1. The right phrenic nerve is positioned _____ to the pericardial sac.
A

lateral

43
Q
  1. The right phrenic nerve passes _____ to the root of the right lung.
A

anterior

44
Q
  1. The azygos vein (arch) passes ______ to the right main bronchus
A

superior

45
Q

Where is the scalene tubercle and what attaches to it?

A

On the 1st rib.

Anterior scalene muscle attaches from it to 1st rib.

46
Q

The 1st rib contains grooves for the ___________.

A

subclavian artery and vein.

47
Q

Where is the jugular notch located?

A

superior aspect of manubrium.

48
Q

Where are the clavicular notches and what are their functions?

A

On the superior aspect of manubrium, on either side of the jugular notch.

Function- articulates manubrium to clavicle.

49
Q

how many costal notches are on the manubrium and for which ribs?

A

1 and first rib.

Clinical Anatomy 2021 (11 decks)

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