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Anatomy > Thoracic Muscles > Flashcards

Thoracic Muscles Flashcards

(75 cards)

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1
Q

What do cells make

A

extracellular matrix

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2
Q

Extracellular matrix

A

fills space between cells
makes bones and things

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3
Q

Tissue is made up of

A

cells and their ECM

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4
Q

organs are generally

A

self contained

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5
Q

Are bones a tissue or organ

A

could be argued either way

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6
Q

Ex of connective tissue

A

bone and cartilage
Blood and bone marrow

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7
Q

Purpose of CT

A

support and connect other tissue

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8
Q

What components make up the ECM of CT

A

fibers and ground substance

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9
Q

Fibers of CT ECM

A

Collagen (strength)
Elastic
Reticular (fine connection)

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10
Q

Ground fibers of CT ECM

A

Fluid (mostly) or solid (bones)
holds specific molecules (Ca or charged molecules)

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11
Q

superficial fascia

A

loose connective tissue

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12
Q

deep fascia

A

dense irregular connective tissue

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13
Q

tendons, aponeuroses, and ligaments

A

dense, regular CT

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14
Q

Dense CT ECM

A

more fibers then ground substance

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15
Q

Loose CT ECM

A

more ground substance than fibers

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16
Q

Irregular CT is less strong then regular CT (T/F)

A

false

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17
Q

aponeurosis

A

flat tendon

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18
Q

Skeletal muscle

A

striated
long and cylindrical
multinucleated (fused)

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19
Q

Skeletal muscle fibers extend the whole muscle length (T/F)

A

true
reduces communication time

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20
Q

Striations run…

A

perpendicular to the long axis of a fiber

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21
Q

striated muscles contract…

A

the long way
sarcomeres shrink

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22
Q

reticular CT surrounding muscle fibers

A

endomysium

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23
Q

Dense irregular CT surrounding fascicles

A

perimysium

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24
Q

dense irregular CT surrounding the entire muscle

A

epimysium
merges with deep fascia

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25
Fibers merge into tendons (T/F)
true
26
What is the strongest part of a tendon
its attachment to bone or muscle weak in the middle
27
What are tendons
dense regular CT (doesn't contract) attachers
28
What does tendons being viscoelastic mean
they resist shape change and bring the mechanism back to rest
29
Skeletal muscle is completely under voluntary control (T/F)
False, some sphincters are not
30
What type of muscle wrinkles the skin
cutaneous
31
Skeletal muscle main functions
move skeleton maintain posture stabilize joints
32
Secondary actions of skeletal muscles
face and eye movement respiration straining and continence twitching
33
Strap muscles
Parallel fibers high displacement low strength
34
pennate muscles
non parallel fibers high strength low displacement
35
Spindle shaped skeletal muscle
diagonally arranged fibers provides both movement and power
36
muscle origin
least movable attachment
37
muscle insertion
most moveable attachment
38
agonists
most force generator Primary mover
39
Synergists
supports (same way) agonist movement
40
antagonists
resist agonist movement/moves oppositely
41
Neutralizers
cancel extra agonist motion prevent movement in a undesired plane
42
fixators
stabilize agonist origins for effective function
43
Extrinsic muscle
connects axial to appendicular skeleton
44
Intrinsic muscle
part of the appendage doesn't attach to axial section
45
Synsarcosis
skeleton connection formed by only muscles Cursorial shoulders
46
Protraction of an appendage
draws limb cranially muscles in front of appendage
47
retraction of an appendage
draws limb caudally muscles behind appendage
48
Rotation of an appendage
caused by contraction of muscles in position
49
Elevation of an appendage
draw limb dorsally muscles above appendage
50
Depression of an appendage
draws limb ventrally muscles below appendage
51
ABduction
lateral movement Away from thorax
52
ADuction
medial movement towards thorax
53
Internal/Medial rotation of shoulder
More pigeon toed elbow out
54
External/Lateral rotation or shoulder
less pigeon toed elbow in
55
pronation
palm down
56
supination
palm up
57
Deep fascia permits movement of the skin over underlying structures (T/F)
false superficial fascia does
58
Which fascia type contains adipose
superficial
59
Superficial fascia blends with deep fascia which blends with epimysium (T/F)
true
60
what attaches muscle to bone if a tendon or aponeurosis isn't present
deep fascia
61
cutaneous muscles
exist only in superficial fascia no bony attachment
62
What are the two cutaneous muscle of the thoracic appendage
Platysma (neck) Cutaneous trunci (trunk)
63
brachiocephalicus
compound muscle of cleidobrachialis and cleidocephalicus
64
Flexion
decreases angle between bones
65
extension
increases angle between bones
66
Flexor surfaces
sides of the joint that determine flexion or extension Acute angles
67
Muscles that act as lateral collateral ligaments
supra and infraspinatus
68
Muscles that act as medial collateral ligaments
subscapularis and coracobracialis
69
cleidobrachialis
the clavicular part of deltoideus in animals with reduced clavicles
70
carpal joint
all joints between antibrachial, carpal, and metacarpal bones
71
carpus
carpal bones carpal joint in between antibrachium and metacarpus
72
Movement of radius relative to the ulna
pronation and supination
73
Supination bone movement
Distal radius moves to be cranial to distal ulna
74
Pronation bone movement
Distal radius moves to be medial to distal ulna
75
The head of the ulna rotates against a notch in the radius during pro and supination (T/F)
false head of radius rotates in ulna notch

Anatomy (6 decks)

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