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BIO 110 > MUSCLES ATTACHMENT & ACTION > Flashcards

MUSCLES ATTACHMENT & ACTION Flashcards

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1
Q

Orbicularis oris

A

Proximal/Superior Attachment
-Maxilla and mandible
Distal/Inferior Attachment
-Encircling the mouth; skin at corner of mouth
Innervation
-Facial VII nerve
Action
-Closes and protrudes lips, shapes lips during speech

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2
Q

Orbicularis oculi

A

Proximal/Superior Attachment
-Medial wall of orbit
Distal/Inferior Attachment
-Circular path around orbit
Innervation
-Facial VII nerve
Action
-Closes eye

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3
Q

Frontal belly of occipitofrontalis

A

Proximal/Superior Attachment
-Epicranial aponeurosis
Distal/Inferior Attachment
-Skin superior to supraorbital margin
Innervation
-Facial VII nerve
Action
-Draws scalp anteriorly, raises eyebrows

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4
Q

Occipital belly of occipitofrontalis

A

Proximal/Superior Attachment
-Superior nuchal line
Distal/Inferior Attachment
-Epicranial aponeurosis
Innervation
-Facial VII nerve
Action
-Retracts the scalp

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5
Q

Temporalis

A

Proximal/Superior Attachment
-Temporal bone
Distal/Inferior Attachment Encircling the mouth
-Mandible
Innervation
-Trigeminal V nerve
Action
-Elevates and retracts the mandible

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6
Q

Buccinator

A

Proximal/Superior Attachment
-Maxilla and mandible
Distal/Inferior Attachment
-Orbicularis oris
Innervation
-Facial VII nerve
Action
-Presses cheeks against teeth

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7
Q

Masseter

A

Proximal/Superior Attachment
-Maxilla and zygomatic arch
Distal/Inferior Attachment
-Mandible
Innervation
-Trigeminal V nerve
Action
-Elevates mandible

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8
Q

Extrinsic eye muscles

A

Proximal/Superior Attachment
-Back of orbit
Distal/Inferior Attachment
-Different parts of the eyeball
Innervation
-NA
Action
-Precise and rapid movement of the eyes

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9
Q

Sternocleidomastoid

A

Proximal/Superior Attachment
-Clavicle and sternum
Distal/Inferior Attachment
-Temporal bone
Innervation
-Accessory nerve XI, C2 and C3
Action
-Flex and rotate the head

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10
Q

Scalene muscles

A

Proximal/Superior Attachment
-Cervical vertebrae
Distal/Inferior Attachment
-1st and 2nd ribs
Innervation
-Cervical spinal nerves
Action
-Flex neck, elevate 1st and 2nd ribs

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11
Q

Splenis capitis

A

Proximal/Superior Attachment
-C7-T4
Distal/Inferior Attachment
-Occipital bone, temporal bone
Innervation
-Cervical spinal nerves
Action
-Flex neck, elevate 1st and 2nd ribs

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12
Q

Erector spinae

A

Proximal/Superior Attachment
-Ribs
Distal/Inferior Attachment
-Ribs and iliac crest
Innervation
-Cervical and thoracic nerves
Action
-Extend and maintain erect posture

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13
Q

Pectoralis minor

A

Proximal/Superior Attachment
-2nd – 5th ribs
Distal/Inferior Attachment
-Scapula
Innervation
-Medial pectoral nerve
Action
-Abducts scapula and rotates it downward

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14
Q

Pectoralis major

A

Proximal/Superior Attachment
-Clavicle and sternum
Distal/Inferior Attachment
-Proximal humerus
Innervation
-NA
Action
-Adducts and medially rotates the arm at the shoulder

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15
Q

Latissimus dorsi

A

Proximal/Superior Attachment
-Spines of T7 – L5 and iliac bone
Distal/Inferior Attachment
-Mid-humerus
Innervation
-Thoracodorsal nerve
Action
-Drives arm anteriorly and posteriorly

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16
Q

Biceps brachii

A

Proximal/Superior Attachment
-Scapula
Distal/Inferior Attachment
-Radius
Innervation
-Musculocutaneous nerve
Action
-Flexes forearm at the elbow joint, flexes arm at shoulder joint

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17
Q

Diaphragm

A

Proximal/Superior Attachment
-Xiphoid process, inferior 6 ribs, lumbar vertebrae
Distal/Inferior Attachment
-Central tendon
Innervation
-Phrenic nerve
Action
-Normal inhalation

18
Q

External intercostals

A

Proximal/Superior Attachment
-Inferior border of rib above
Distal/Inferior Attachment
-Superior border of rib below
Innervation
-Thoracic spinal nerves T2-T12
Action
-Normal breathing

19
Q

Internal intercostals

A

Proximal/Superior Attachment
-Superior border of rib below
Distal/Inferior Attachment
-Inferior border of rib above
Innervation
-Thoracic spinal nerves T2-T12
Action
-Deep breathing

20
Q

Trapezius

A

Proximal/Superior Attachment
-Occipital bone and cervical spine
Distal/Inferior Attachment
-Clavicle and acromion
Innervation
-Accessory (XI) and cervical spinal nerves C3- C5
Action
-Moves the scapula up and down, in and out

21
Q

Deltoid

A

Proximal/Superior Attachment
-Clavicle and upper scapula
Distal/Inferior Attachment
-Humerus
Innervation
-Axillary nerve
Action
-Abducts, flexes, and medially rotates the upper arm

22
Q

Rectus abdominus

A

Proximal/Superior Attachment
-Pubic bone
Distal/Inferior Attachment
-Ribs 5-7 and xipoid process
Innervation
-Thoracic spinal nerves T7-T12
Action
-Flexes vertebral column, compresses abdomen

23
Q

External oblique

A

Proximal/Superior Attachment
-Ribs 5-12
Distal/Inferior Attachment
-Iliac crest and linea alba
Innervation
-Thoracic spinal nerves T7-T12
Action
-Compress abdomen, sideways bending

24
Q

Internal oblique

A

Proximal/Superior Attachment
-Iliac crest, inguinal ligament, lumbar fascia
Distal/Inferior Attachment
-Ribs 7-10, linea alba
Innervation
-Thoracic spinal nerves T8-T12
Action
-Compress abdomen, sideways bending

25
Q

Triceps brachii

A

Proximal/Superior Attachment
-Scapula and posterior surface of humerus
Distal/Inferior Attachment
-Olecranon process of ulna
Innervation
-Radial nerve
Action
-Extends forearm at elbow joint and arm at shoulder joint

26
Q

Brachioradialis

A

Proximal/Superior Attachment
-Humerus
Distal/Inferior Attachment
-Distal radius
Innervation
-Radial nerve
Action
-Supinates the forearm at the radioulnar joint

27
Q

Thenar

A

Proximal/Superior Attachment
-Wrist tendons
Distal/Inferior Attachment
-Thumb
Innervation
-Ulnar and medial nerves
Action
-Oppose thumb

28
Q

Hypothenar

A

Proximal/Superior Attachment
-Wrist tendons
Distal/Inferior Attachment
-Little finger
Innervation
-Ulnar and medial nerves
Action
-Oppose thumb

29
Q

Urinary sphincter

A

Proximal/Superior Attachment
-Ischial and pubic rami
Distal/Inferior Attachment
-Median raphe in male, vaginal wall in female
Innervation
-Perineal branch of sacral plexus
Action
-Helps expel urine

30
Q

External anal sphincter

A

Proximal/Superior Attachment
-Anococcygeal ligament
Distal/Inferior Attachment
-Perineal body of perineum
Innervation
-Perineal branch of sacral plexus
Action
-Keeps anal canal and anus closed

31
Q

Levator ani

A

Proximal/Superior Attachment
-Pubis and ischial spine
Distal/Inferior Attachment
-Coccyx
Innervation
-Sacral spinal nerves
Action
-Supports and maintains position of pelvic viscera

32
Q

Gluteus maximus

A

Proximal/Superior Attachment
-Iliac crest, sacrum, coccyx
Distal/Inferior Attachment
-Femur
Innervation
-Inferior gluteal nerve
Action
-Extends thigh at hip joint

33
Q

Gluteus medius

A

Proximal/Superior Attachment
-Ilium
Distal/Inferior Attachment
-Femur
Innervation
-Superior gluteal nerve
Action
-Abducts thigh at hip joint, medially rotates thigh

34
Q

Gluteus minimus

A

Proximal/Superior Attachment
-Ilium
Distal/Inferior Attachment
-Femur
Innervation
-Superior gluteal nerve
Action
-Abducts thigh at hip joint, medially rotates thigh

35
Q

Psoas major

A

Proximal/Superior Attachment
-Lumbar vertebrae
Distal/Inferior Attachment
-Femur
Innervation
-Lumbar spinal nerves
Action
-Flex thigh at hip joint, rotate thigh laterally, flex trunk on hip

36
Q

Iliacus

A

Proximal/Superior Attachment
-Iliac crest, sacrum
Distal/Inferior Attachment
-Femur
Innervation
-Lumbar spinal nerves
Action
-Flex thigh at hip joint, rotate thigh laterally, flex trunk on hip

37
Q

Quadricep group (rectus
femoris, vastus lateralis, vastus intermedius, vastus medialis)

A

Proximal/Superior Attachment
-Iliac spine and proximal femur
Distal/Inferior Attachment
-Patella and proximal tibia
Innervation
-Femoral nerve
Action
-Flexes thigh at hip joint, extend leg at knee joint

38
Q

Adductors

A

Proximal/Superior Attachment
-Pubis
Distal/Inferior Attachment
-Femur
Innervation
-Obturator nerve
Action
-Adducts and flexes thigh at hip joint and rotates thigh

39
Q

Hamstring group (bicep femoris, semitendinosus, semimembranosus)

A

Proximal/Superior Attachment
-Ischial tuberosity
Distal/Inferior Attachment
-Proximal tibia and fibula
Innervation
-Tibial nerve from sciatic nerve
Action
-Flexes leg at knee joint and extend thigh at hip joint

40
Q

Tibialis anterior

A

Proximal/Superior Attachment
-Tibia
Distal/Inferior Attachment
-First cuneiform and first metatarsal
Innervation
-Deep fibular nerve
Action
-Dorsiflexes and inverts the foot

41
Q

Gastrocsoleus (gastrocnemius and soleus muscles)

A

Proximal/Superior Attachment
-Femur, capsule of knee, head of fibula
Distal/Inferior Attachment
-Calcaneous
Innervation
-Tibial nerve
Action
-Plantar flexes foot

BIO 110 (6 decks)

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