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a&p unit 5 > lecture 33 > Flashcards

lecture 33 Flashcards

1
Q

quiet inspiration

A

one muscle, diaphragm

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2
Q

forced inspiration

A

multiple muscles, accessory muscles of inspiration

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3
Q

diaphragm completely separates what

A

abdominal and thoracic cavities

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4
Q

diaphragm edges do what

A

attach to the inferior part of the rib cage

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5
Q

diaphragm intermediate region is what

A

central tendon

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6
Q

when diaphragm contracts, what happens to muscles

A

muscle fibers shorten, diaphragm pulls the central tendon down and forward

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7
Q

diaphragm is what attachment to what process

A

sternal attachment at xiphoid process

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8
Q

diaphragm costal attachment

A

attaches to inner border of ribs 7-12

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9
Q

vertebral diaphragmatic attachment

A

attaches w corpus of L1-L4 and transverse processes at L1

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10
Q

what attaches w corpus of L1-L4 and transverse processes at L1

A

vertebral diaphragmatic attachment

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11
Q

what attaches to inner border of ribs 7-12

A

diaphragm costal attachment

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12
Q

diaphragm central tendon

A
  • crescent shaped, white and translucent
  • conforms to prominence of vertebral column
  • flexibility but depends on radiating fibers of the diaphragm for movement
  • provides a strong and secure floor for the heart
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13
Q

three openings in the diaphragm

A

aortic hiatus, esophageal hiatus, foramen vena cava

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14
Q

aortic hiatus

A

descending abdominal aorta passes through

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15
Q

esophageal hiatus

A

esophagus passes through

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16
Q

foramen vena cava

A

inferior vena cava passes through

17
Q

accessory muscles of inspiration

A

external intercostal muscles, internal intercostal muscles, levatores costarum, serratus posterior superior, sternocleidomastoid, scalenes, pectoralis major, pectoralis minor, serratus anterior, subclavius, levator scapulae, trapezius, rhomboideus major, rhomboideus minor

18
Q

when external intercostal muscles are contracted

A

the entire rib cage elevates, mostly distance moved is the front part

19
Q

what is most significant respiratory muscles for speech

A

external intercostal muscles

20
Q

where do external intercostal muscles reside

A

between the 12 ribs - originate in the lower surface of each rib and course downward to insert into upper surface of rib immediately below

21
Q

internal intercostal muscles are where

A

near the sternum; assits with forced inspiration

22
Q

internal intercostal muscles origin and insertion

A

originates from superior margin of each rib and runs up and medially to the inferior surface of the rib above

23
Q

levatores costarum

A

elevates rib cage; has longis and brevis

24
Q

levatores costarum longis origin and insertion

A

originates on transverse processes of T7-T10, skips the rib below and inserts into next rib - courses obliquely out

25
Q

levatores costarum brevis origin and insertion

A

originates on transverse processes of C7-T11 for a total of 12 levator costarum brevis muscles - courses obliquely down and out to insert into turbercle of rib below

26
Q

serratus posterior superior

A

elevation of rib cage

27
Q

serratus posterior superior origin and insertion

A

originate from on spinous processes of C7 and T1-T3; course down and laterally to insert just beyond angles of ribs 2-5

28
Q

sternocleidomastoid

A

elevates anterior rib cage and sternum

29
Q

scalenes (elevate and increase what)

A

anterior, middle, and posterior muscle; elevate the first and second ribs, increase vertical dimension of thorax

30
Q

pectoralis major (origin, insertion, elevation)

A

originates at sternu, and fans out to humerus
elevates sternum

31
Q

pectoralis minor origin and insertion and increases what

A

originates on anterior surface of ribs 2-5 and inserts into scapula, increases transverse dimension of rib cage

32
Q

serratus anterior

A

originates from ribs 1-9 and runs upward to scapula
elevates rib 1-9

33
Q

subclavius

A

originates from inferior surface of clavicle and inserts to superior surface of rib 1
elevates rib 1

34
Q

levator scapulae

A

originates from transverse processes of C1-C4 and inserts in scapula, elevates scapula and supports neck

35
Q

trapezius

A

originates from spinous processes of C2-T12 and inserts into scapula
elongates neck and controls head

36
Q

rhomboideus major

A

originates from spinous processes of T2-T5 and runs down and lateral to the scapula
stabilizes shoulder girdle

37
Q

rhomboideus minor

A

originates from spinous processes of C7 and T1 and runs down and lateral to scapula
stabilizes shoulder girdle

a&p unit 5 (4 decks)

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