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Gross Anatomy > Exam 3 > Flashcards

Exam 3 Flashcards

0
Q

The inferior thoracic aperture is bounded:

A

Posteriorly by the T12 vertebra
Posterolaterally by the 11th and 12th pairs of ribs
Anteriolaterally by the joined costal cartilages of ribs 7-10 forming the costal margin
Anteriorly by the xiphisternal joint

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1
Q

The superior thoracic aperture is bounded:

A

Posteriorly by the T1 vertebrae
Laterally by the 1st pair of ribs and their costal cartilages
Anteriorly by the superior border of the manubrium

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2
Q

True (vertebrocostal) ribs

A

1st-7th ribs

Attach directly to the sternum through their own costal cartilages

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3
Q

False (vertebrochondral) ribs

A

8th-10th ribs
Have cartilages that are joined to the cartilage of the rib just superior to them; thus their connection with the sternum is indirect

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4
Q

Characteristic features of thoracic vertebrae

A
  • bilateral costal facets (demifacets) on their bodies for articulation with the head of the ribs; atypical thoracic vertebrae have 1 whole costal facet in place of the demifacets
  • costal facets on their transverse processes for articulation with the tubercles of ribs, except for the inferior 2 or 3 thoracic vertebrae
  • long inferiorly slanting spinous processes
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5
Q

3 parts of sternum

A

Manubrium
Body
Xiphoid processes

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6
Q

Intervertebral joint type

A

Symphysis

Secondary cartilaginous joint

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7
Q

Intervertebral joint articulates with:

A

Adjacent vertebral bodies bound together by intervertebral disc

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8
Q

Ligaments of intervertebral joint

A

Anterior and posterior longitudinal

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9
Q

Joint type of Costovertebral joints of the head of ribs

A

Synovial plane

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10
Q

Costovertebral joints of head of ribs articulates with:

A

Head of each rib with superior demifacet or costal facet of corresponding vertebral body and inferior demifacet or costal facet of vertebral body superior to it

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11
Q

Ligaments of costovertebral joints of head of ribs

A

Radiate and intra-articular ligaments of head of rib

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12
Q

Joint type of costotransverse joint

A

Synovial plane

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13
Q

Costotransverse articulations

A

Articulation of tubercle of rib with transverse process of corresponding vertebra

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14
Q

Costotransverse ligaments

A

Lateral and superior costotransverse

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15
Q

Visceral pleura (pulmonary pleura)

A

Covers the lungs and is adherent to all its surfaces
Including the surfaces within the horizontal and oblique fissures
It cannot be dissected from the lungs

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16
Q

Parietal pleura

A

Lines the pulmonary cavities, adhering to the thoracic wall, the mediastinum, and the diaphragm

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17
Q

Muscles that originate at inferior border of the ribs

A

External intercostal
Internal intercostal
Innermost intercostal

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18
Q

Origin of transversus thoracis

A

Posterior surface of lower sternum

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19
Q

Origin of subcostal

A

Internal surface of lower ribs near their angles

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20
Q

Origin of levatores costarum

A

Transverse processes of T7-T11

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21
Q

Origin of serratus posterior superior

A

Nuchal ligament

Spinous processes of C7-T3

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22
Q

Origin of serratus posterior inferior

A

Spinous processes of T11-L2

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23
Q

Insertion of external intercostal

A

Superior border of ribs below

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24
Q

Insertion of internal intercostal

A

Superior border of ribs below

25
Q

Insertion of innermost intercostal

A

Superior border of ribs below

26
Q

Insertion of transversus thoracis

A

Internal surface of costal cartilages 2-6

27
Q

Insertion of subcostal

A

Superior borders of 2nd or 3rd ribs below

28
Q

Levatores costarum insertion

A

Subjacent ribs between tubercle and angle

29
Q

Insertion of serratus posterior superior

A

Superior borders of 2nd-4th ribs

30
Q

Insertion of serratus posterior inferior

A

Inferior borders of 8th-12th ribs near their angles

31
Q

Innervated by intercostal nerve

A

External intercostal
Internal intercostal
Innermost intercostal

32
Q

Innervation of levatores costarum

A

Posterior rami of C8-T11 nerves

33
Q

Innervation of serratus posterior superior

A

2nd-5th intercostal nerves

34
Q

Innervation of serratus posterior inferior

A

9th-11th intercostal nerves

Subcostal (T12) nerve

35
Q

Actions of levatores costarum and serratus posterior superior

A

Elevates ribs

36
Q

Actions of transversus thoracis

A

Weakly depresses ribs

37
Q

Actions of external intercostal

A

During forced inspiration: elevates ribs

38
Q

Sternocostal joint type

A

1st: primary cartilaginous joint

2nd-7th: synovial plane joint

39
Q

Sternoclavicular joint type

A

Saddle type synovial

40
Q

Costochondral joint type

A

Primary cartilaginous joint

41
Q

Manubriosternal joint type

A

Secondary cartilaginous joint

Symphysis

42
Q

Xiphisternal joint type

A

Primary cartilaginous joint

Synchondrosis

43
Q

Contents of superior mediastinum

A

Superior vena cava
brachiocephalic veins
trachea
thymus

44
Q

origin of external oblique

A

external surfaces of the 5th-12th ribs

45
Q

insertion of external oblique

A

linea alba
pubic tubercle
anterior half of iliac crest

46
Q

innervation of external oblique

A

thoraco-abdominal nerves
(anterior rami of T7-T11)
subcostal nerve

47
Q

actions of external oblique

A

compress and support abdominal viscera

flex and rotate trunk

48
Q

origin of internal oblique

A

Thoracolumbar fascia
anterior 2/3 of iliac crest
connective tissue deep to inguinal ligament

49
Q

insertion of internal oblique

A

inferior borders of 10th-12th ribs
linea alba
pubis via conjoint tendon

50
Q

innervation of internal oblique

A

thoraco-abdominal nerves
(anterior rami of T7-T11)
first lumbar nerve

51
Q

actions of internal oblique

A

Compress and support abdominal viscera

flex and rotate trunk

52
Q

origin of transversus abdominis

A

internal surfaces of 7th-12th costal cartilages
thoracolumbar fascia
iliac crest
connective tissue deep to inguinal ligament

53
Q

insertion transversus abdominis

A

linea alba with aponmeurosis of internal oblique
pubic crest
pectin pubis via conjoint tendon

54
Q

innervation of transversus abdominis

A

thoraco-abdominal nerves
(anterior rami of T7-T11)
first lumbar nerve

55
Q

actions of transversus abdominis

A

Compresses and supports abdominal viscera

56
Q

origin rectus abdominis

A

pubic symphysis

pubic crest

57
Q

insertion rectus abdominis

A

xiphoid process

5th-7th costal cartilages

58
Q

innervation rectus abdominis

A

thoraco-abdominal nerves

anterior rami of inferior 6 thoracic nerves

59
Q

actions of rectus abdominis

A 
flexes trunk (lumbar vertebrae)
compresses abdominal viscera
stabilizes and controls tilt of pelvis (antilordosis)
60
Q

linea alba

A

extends from the xiphoid process to the pubic symphysis

Gross Anatomy (8 decks)

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