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LBBBIO8 > Muscular system > Flashcards

Muscular system Flashcards

(58 cards)

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1
Q

fixed point of attachment of muscle

A

origin

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2
Q

movable point of attachment

A

insertion

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3
Q

part between origin and insertion

A

muscle belly

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4
Q

multiple origins

A

heads

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5
Q

multiple insertions

A

slips

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6
Q

example of a bone named after attachment

A

sternoradialis

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7
Q

example of bone named after location

A

pectoralis

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8
Q

example of bone named after shape

A

deltoid

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9
Q

example of bone named after size and action

A

adductor magnus

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10
Q

name of bone named after direction of muscle fibers

A

external oblique

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11
Q

adductor

A

move a part TOWARDS the main axis of the body

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12
Q

abductor

A

move a part AWAY from the main axis

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13
Q

extensor

A

move jointed parts AWAY from each other

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14
Q

flexor

A

move jointed parts TOWARDS each other

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15
Q

levator

A

RAISES a part

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16
Q

depresor

A

LOWERS a part

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17
Q

large spaces between the skin and muscles where the skin is not attached

A

subcutaneous lymph sacs

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18
Q

surrounds the muscles and separates it from other muscles

A

fascia

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19
Q

OIA of submentalis

A

O: anterior tip of the mandible
I: anterior angle of the lower jaw
A: raises the tip of the lower jaw

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20
Q

OIA of mylohyoid

A

O: median surface of the mandible
I: median raphe
A: raises the floor of the mouth during breathing or swallowing

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21
Q

OIA of sternoradialis

A

O: episternum and omosternum
I: proximal end of the radius
A: flexes forearm

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22
Q

OIA of cutaneous pectoralis

A

Origin: Xiphisternum; from the anterior margin of the sheath
that covers the rectus abdominis

Insertion: Dermis of the skin at the pectoral region

Action: Tenses the skin that overlies the pectoral girdle

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23
Q

OIA of pectoralis

A

Origin: Sternum

Insertion: Humerus

Action: Flexor, adductor, and rotator of the arm

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24
Q

OIA of rectus abdominis

Study These Flashcards
A

Origin: Pubic border
Insertion: Sternum
Action: Support the abdominal viscera; hold the sternum in
place

25
OIA of external oblique
Origin: Ilium; dorsal fascia of vertebrae Insertion: Linea alba Action: Help constrict the abdomen; support the viscera
26
OIA of Internal oblique
Origin: Ilium; dorsal fascia; transverse process of vertebrae Insertion: Anterior portion of the same aponeurosis to which the external oblique attaches Action: Help constrict the abdomen; support the viscera
27
OIA of sartorius
Origin: Pubis Insertion: Tibiofibula Action: Flexes the shank; adducts the thigh
28
OIA of adductor longus
Origin: Ilium Insertion: Femur Action: Adducts the thigh
29
OIA of adductor magnus
Origin: Pubic symphysis; ischial symphysis Insertion: Distal end of the femur Action: Adducts the thigh; flexes or extends the shank
30
OIA of gracilis major
Origin: Ischium Insertion: Tibiofibula Action: Adducts the thigh; flexes the shank
31
OIA of gracilis minor
Origin: Ischium Insertion: Tibiofibula Action: Adducts the thigh; flexes the shank
32
OIA of semitendinosus
Origin: Ischium Insertion: Tibiofibula Action: Adducts the thigh; flexes the leg
33
OIA of gastrocnemius
Origin: Distal end of the femur; anterior portion of the knee Insertion: Ankle of the foot Action: Extensor of the foot
34
OIA of tibialis posticus
Origin: Posterior surface of the tibiofibula Insertion: Proximal end of the astragalus Action: Extensor or flexor of the foot depending on the position of the foot
35
OIA of extensor cruris
Origin: Distal end of the femur Insertion: Anterior surface of the proximal half of the tibiofibula Action: Extensor of the foot
36
OIA of tarsi anterior
Origin: Anterior surface of the middle and distal half of tibiofibula Insertion: Proximal end of astragalus; fascia of the foot Action: Flexor of the foot
37
OIA of tibialis anticus
Origin: Femur Insertion: Distal end of the astragalus and calcaneus Action: Flexor of the foot
38
OIA of scapulohumeralis
Origin: Scapula Insertion: Deltoid ridge Action: Adducts the forearm
39
OIA of triceps brachii
Origin: Base of the scapula; shaft of the humerus Insertion: Proximal end of the radioulna Action: Extends the forearm
40
OIA of temporalis
Origin: Middorsal line of the skull Insertion: Posterior region of the mandible Action: Raises the lower jaw; closes the mouth
41
OIA of depressor mandibulae
Origin: Through the tough fascia in the middorsal line Insertion; Mandible Action: Depresses the jaw
42
OIA of dorsalis scapulae
Origin: Dorsal surface of suprascapula and scapula Insertion: Lateral side of the humerus Action: Abducts the arm
43
OIA of cucullaris
Origin: Middorsal line Insertion: Portion of the pectoral girdle Action: Draws forelimbs upward
44
OIA of latissims dorsi
Origin: Lumbodorsal fascia Insertion: Lateral side of the proximal end of the humerus Action: Draws the forelimb upward and backward
45
OIA of longissimus dorsi
Origin: Anterior third of the urostyle Insertion: Posterior end of the skull; dorsal surfaces of the vertebrae Action: Extends the back; elevates the head
46
OIA of ilio-lumbaris
Origin: Anterior part of the ilium Insertion: Transverse processes of the trunk vertebrae Action: Bends the back
47
OIA of coccygeo-sacralis
Origin: Lateral side of the half of the urostyle Insertion: Transverse processes of the sacral vertebrae Action: Draws the back and urostyle nearer to each other
48
OIA of coccygeo-iliacus
Origin: Lateral side of the posterior half of the urostyle Insertion: Ilium Action: Extends the back; fixes the urostyle with respect to the pelvic girdle
49
Three heads of triceps femoris
Vastus externus- dorsally situated Rectus femoris (Tensor fascia lata)- medially located Vastus internus- ventrally located
50
OIA of triceps femoris
Origin: Vastus externus- crest of the ilium Tensor fascia lata- ventral side of the ilium Vastus internus- acetabulum Insertion Front of tibia Action Draws the hindlimb forward; extends the leg
51
OIA of gluteus
Origin: Ilium Insertion: Proximal end of the femur Action: Rotates the femur forward
52
OIA of biceps femoris
Origin: Posterior part of the ilium Insertion: Proximal end of the tibiofibula Action: Flexes the shank
53
OIA of semimemranosus
Origin: Posterior part of the ischium Insertion: proximal end of the tibiofibula Action: Flexes or extends the shank
54
OIA of pyriformis
Origin: Urostyle Insertion: Femur Action: Pulls the urostyle to one side; draws the femur dorsally
55
Peroneus OIA
Origin: Distal end of the femur Insertion: Distal end of the tibiofibula; proximal end of calcaneus Action: Extensor or flexor of the foot
56
for effective contraction, muscles must be arranged in __
antagonistic pairs
57
example of antagonistic pairs
gastrocnemius and tibialis anticus
58
OIA of geniohyoid
O: anterior angle of the lower jaw I: posterior cornua and thyroid process of the hyoid A: draws the hyoid forward and upward

LBBBIO8 (8 decks)

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