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Anatomy 3 > TOPIC 8A - Costae, sternum, their junctions, mm. respiratorii > Flashcards

TOPIC 8A - Costae, sternum, their junctions, mm. respiratorii Flashcards

1
Q

name the muscles involved in inspiration

A

m. serratus dorsalis cranialis, scalenus dorsalis and medius, rectus thoracis, levatores costarum, intercostalis externus

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2
Q

origin of m serratus dorsalis cranialis

A

thoracolumbar fascia, th1-7 SP

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3
Q

insertion of m serratus dorsalis cranialis

A

prox on ribs 2-10

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4
Q

origin of m scalenus doralis

A

C4-6 TP

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5
Q

origin of m scalenus medius

A

C6-7 TP

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6
Q

Insertion of m scalenus dorsalis

A

2 parts: dorsal part on first 4 ribs

ventral part on first 8 ribs

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7
Q

Insertion of m scalenus medius

A

cranial border of first rib (aka m scalenus primae costae)

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8
Q

Origin of m rectus thoracis

A

first rib

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9
Q

insertion of m rectus thoracis

A

ventral ends of ribs 2-4

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10
Q

origin of Mm levatores costarum

A

TP of TH 1-12

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11
Q

Insertion of Mm levatores costarum

A

cranial of ribs near angulus costae

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12
Q

origin &insertion of mm intercostales externus

A

(fibres run caudoventrally)

caudal border of one rib to cranial border of next

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13
Q

Name the muscles involved in expiration

A

m retractor costae ultimae, serratus dorsalis caudalis, intercostalis internus, transverse thoracis, subcostalis

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14
Q

origin of m serratus dorsalis caudalis

A

thoracolumbar fascia

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15
Q

insertion of m serratus dorsalis caudalis

A

prox on ribs 11-13

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16
Q

origin of m retractor costae ultimae

A

TP of L1-4

17
Q

insertion of m retractor costae ultimae

A

caudally on last rib

18
Q

origin and insertion of mm intercostalis internus

A

(fibres run cranioventrally)

cranial border of first rib to caudal border of previous

19
Q

origin of m transversus thoracis

A

inner surface of sternum

20
Q

insertion of m transversus thoracis

A

costae cartilage 2-8

21
Q

origin and insertion of m subcostalis

A

crossing ribs 9-11 medial surface cranioventral direction

22
Q

how many ribs in eq

A

18

23
Q

how many ribs in ru

A

13

24
Q

how many in ca

A

13

25
Q

which ribs form the costal arch

A

asternal/spuriae ribs

26
Q

features of the ribs

A 
facies articularis capitis costae cran and caud
genu costae
sulcus costae
caput costa
tuberculum costae
collum costae
spatium intercostales
tuberositas m longissimi
tuberositas m ilocostalis (eq always)
tuberositas m scaleni ventralis (rib 1 except ru)
27
Q

which ribs have amphiarthrosis joint in sus

A

2-5th rib

28
Q

which ribs have amphiarthrosis joint in Ru

A

2-10 rib

29
Q

Tuberosities of the ribs (3)

A

tuberositas m longissimi
tuberositas m ilocostalis (eq always)
tuberositas m scaleni ventralis (rib 1 except ru)

30
Q

the two articulations in articulatio costovertebralis

A

art capitis costae - spheroid joint

art costotransversaria - amphiarthrosis - sliding joint.

31
Q

art costotransversaria is between

A

tuberculum costae and TP of thoracic vert

32
Q

ligaments of the ribs

A

lig capitis costae radiatum (cran - bosy pf previous vert, caud body of same vert)
lig capitis costae intraarticulare (sulcus capitis costae to vert column via 1. lig intercapitale, 2, short cran limb and 3. short caudal limb)
lig costotransversarium (TP to doral surface collum costae)
lig tuberculi costae (TP Th to tuberculum costae)

33
Q

why are there no hernias in thoracic region

A

because of lig intercapitis

34
Q

what kind of art is costochondralis

A

normally symphysis

amohiarthrosis 2-5 (sus) and 2-10 (Ru)

35
Q

What kind of art is art sternocostalis

A

pivot joint

36
Q

what is the ligament of art sternocostalis

A

ligg sternocostalis radiata

37
Q

what kind of art is art sternebralis

A

synchondrosis sternales - cartilageneous joint

38
Q

ligaments of art sternebrales

A 
lig sterni (not in ca)
membrana sterni

Anatomy 3 (65 decks)

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