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Bio 223 Musculoskeletal > Axial Musculature: lecture 9 > Flashcards

Axial Musculature: lecture 9 Flashcards

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Biology 101 flashcards
1
Q

Internus (profundus)

A

Deep muscles

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2
Q

Extrinsic

A

Muscles outside an organ

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3
Q

Intrinsic

A

Muscles inside an organ

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4
Q

Abductor

A

Movement away

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5
Q

Adductor

A

Movement toward

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6
Q

Depressor

A

Lowering movement

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7
Q

Extensor

A

Straightening movement

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8
Q

Flexor

A

Levator

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9
Q

Pronator

A

Turning into prone position

Pro basketball

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10
Q

Supinator

A

Turning into supine position

Holding bowl of soup

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11
Q

Tensor

A

Tensing movement

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12
Q

Erector spinae group

Longissimus

A

Origin: Sacrum/iliac crest and thoracolumbar aponeurosis

Insertion: ribs

Superficial epaxial musculature

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13
Q

Externus (superficialis)

A

Visible at body surface

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14
Q

Erector spinae group

Illiocostalis

A

Origin: Sacrum/iliac crest

Insertion: ribs

Superficial epaxial musculature

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15
Q

Erector spinae group

Spinalis mm.

A

Origin: spinous processes of thoracic and lumber vertebrae

Insertion: spinous processes of thoracic vertebrae

Superficial epaxial musculature

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16
Q

Longus Capitis and Longus Colli

A

Flexors of the neck

17
Q

Quadratus Lumborum

A

Origin: in iliac crest

Insertion: on ribs

Action: spinal flexor and rotates the spine

18
Q

Rectus muscles

A

Fibers are straight up and own with body axis ||||
Flex vertebral column
Oppose erector spinae

There are anatomical subdivisions for each body region for this muscle:
Abdominal, thoracic, perineal (pelvic floor), and neck (cervical)

19
Q

Oblique muscles

A

Fibers are at an angle ////\\ \\\/////
Compress underlying structures in the body wall, and holding your guts in
Rotate vertebral column

There are anatomical subdivisions for each body region for this muscle:
Abdominal, thoracic, perineal (pelvic floor), and neck (cervical)

20
Q

External oblique

A

Origin: lower 8 ribs (T5-T12)

Insertion: Linea Alba and Iliac crest

\\////

21
Q

Internal Oblique

A

Origin: iliac crest and thora columnar fascia

Insertion: Linea Alba, lower sternum

////\\\

22
Q

Transversus abdominis

A

Origin: Thoracolumbar fascia and iliac crest

Insertion: Linea Alba and pubis

23
Q

Rectus Abdominis

A

Origin: superior pubis

Insertion: ribs 5-7, sternum (xiphoid process)

24
Q

Rectus sheath

A

Made of fibers that come from the external and internal

25
Q

External intercostal and internal intercostal

A

Thin muscles between the ribs

Help to elevate and depress the ribs and help with ventilation

26
Q

Transversus thorasis

A

Can only be seen if you remove the rib cage and look inside at the most internal muscle

27
Q

Diaphragm

A

Helps with ventilation not respiration

Helps raise and lower the rib cage

Innervation: C3-C5

28
Q

Anterior urogenital triangle

A

Extends from the pubis to the ischial tuberosity

Superficial
Includes:
- Ischiocavernosus
- Bulbospongiosus
- Superficial transverse perineal
29
Q

Pelvic diaphragm

A

Includes:

  • Levator ani
  • External anal sphincter
  • Coccygeus
30
Q

Scalenes

A

Means they are off to the side
Has a anterior, middle, and posterior group
Part of the oblique muscle group

Action: Help flex and rotates he neck, elevate the ribs

If you find the brachii plexus you’ll find then in between the middle and posterior

31
Q

Geniohyoid

A

Between chin (genu= bend) and hyoid

Depresses mandible, elevates hyoid

Anterior muscles of the neck

32
Q

Stylohyoid

A

Between hyoid and stylish process

Levates the hyoid

Anterior muscles of the neck

33
Q

Sternocleidomastoid

A

From clavicle and sternum to mastoid process

Anterior muscles of the neck

34
Q

Omohyoid

A

Attaches scapula, clavicle, first rib, and hyoid

Depresses hyoid

Anterior muscles of the neck

35
Q

Sternohyoid and sternothyroid

A

Depresses hyoid

36
Q

Innervations

A
  • Limb receives branches from ventral(anterior) Ramos of spinal nerves
  • Dorsal (posterior) mass or musculature from distal dorsal branch
  • Ventral mass from distal ventral branch

Bio 223 Musculoskeletal (3 decks)

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