BIO 100 Anatomy and Physiology > Trunk > Flashcards

Trunk Flashcards

(39 cards)

Study These Flashcards
1
Q

Name the muscle and its origin

A

Trapezius

Origin:

  • External Occipital protruberance,
  • Medial portion of superior nuchal line of occiput,
  • ligamentum nuchae and spinous processes C7 - T12
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Name the muscle and its insertion

A

Trapezius

Insertion: Lateral one third of clavicle, acromion and spine of the scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Name the muscle and its actions

A

Trapezius

Upper Fibers

Bilaterally:

Extend the head and neck

Unilaterally:

Laterally flex the head and neck to same side

Rotate the head and neck to the opposite side

Elevate the scapula (scapulothoracic joint)

Upwardly rotate the scapula

Middle Fibers

Adduct the scapula (ST joint)

Stabilize the scapula (ST joint)

Lower Fibers

Depress the scapula (ST)

Upwardly rotate the scapula (ST)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Name the muscle and its origin and insertion

A

Latissimus Dorsi

Origin:

  • Inferior angle of scapula
  • Spinous process of last six thoracic vertebrae
  • last 3 or 4 ribs
  • Thoracolumbar aponeurosis and posterior iliac crest

Insertion: Intertubercular groove of the humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Name the muscle and its actions

A

Latissimus Dorsi

Actions:

  • Extend the shoulder (GH)
  • Adduct the shoulder (GH)
  • Medially rotate shoulder (GH)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Name the muscle and its origin and insertion

A

Rhomboid Major

Origin: Spinous processes of T2-T5

Insertion: Medial border of the scapula between the spine of the scapula and inferior angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Name the muscle and its actions

A

Rhomboid Major

Actions:

  • Adduct the scapula (ST)
  • Elevate the scapula (ST)
  • Downwardly rotate the scapula (ST)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Name the muscle and its origin and insertion

A

Rhomboid Minor

Origin: Spinous processes of C7-T1

Insertion: Upper portion of medial border of the scapula, across from spine of scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Name the muscle and its actions

A

Rhomboid Minor

Actions:

  • Adduct the scapula (ST)
  • Elevate the scapula (ST)
  • Downwardly rotate the scapula (ST)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Name the muscle and its origin and insertion

A

Levator Scapula

Origin: Transverse processes of C1-C4

Insertion: Medial border of scapula, between superior angle and superior portion of spine of scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Name the muscle and its actions

A

Levator Scapula

Actions:

Unilaterally:

  • Elevate the scapula (ST)
  • Downwardly rotate scapula (ST)
  • Laterally flex the head and neck
  • Rotate the head and neck to the same side

Bilaterally:

  • Extend head and neck
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Name the muscle and its origin and insertion

A

Serratus Anterior

Origin: External surfaces of upper 8 or 9 ribs

Insertion: Anterior surface of medial border of scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Name the muscle and its actions

A

Serratus Anterior

Actions:

  • Abduct the scapula (ST)
  • Upwardly rotate the scapula (ST)
  • Depress scapula (ST)
  • Hold the medial border of the scapula against the rib cage

With scapula fixed: May act to elevate thorax during forced inhalation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Name the muscle and its origin and insertion, as well as its 3 fibers

A

Pectoralis Major

Upper fibers - Clavicular

Middle fibers - Sternal

Lower fibers - Costal

Origin: Medial half of clavicle, sternum and cartilage of 1st - 6th ribs

Insertion: Crest of greater tubercle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Name the muscle and its actions

A

Pectoralis Major

Actions:

All fibers

  • Adduct the shoulder (GH)
  • Medially rotate shoulder (GH)
  • Assist to elevate the thorax during forced inhalation (w/ arm fixed)

Upper fibers

  • Flex the shoulder (GH)
  • Horizontally adduct shoulder (GH)

Lower fibers

-Extend the shoulder (GH)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Name the muscle and its origin and insertion

Study These Flashcards
A

Pectoralis Minor

Origin: 3rd, 4th, and 5th ribs

Insertion: Medial surface of coracoid process of scapula

17
Q

Name the muscle and its actions

Study These Flashcards
A

Pectoralis Minor

Actions:

  • Depress scapula (ST)
  • Abduct scapula (ST)
  • Downwardly rotate scapula (ST)

With scapula fixed: Assist to elevate thorax during forced inhalation

18
Q

Name the muscle and its origin and insertion

Study These Flashcards
A

Subclavius

Origin: 1st rib and cartilage

Insertion: Inferior surface of the middle 1/3 of the clavicle

19
Q

Name the muscle and its actions

Study These Flashcards
A

Subclavius

Actions:

  • depress clavicle and draw it anterior
  • elevate 1st rib during inhalation
  • stabilize sternoclavicualr joint
20
Q

Name the muscle and its action

Study These Flashcards
A

Erector Spinae Group

Actions:

Unilaterally

  • lateral flexion of the vertebral column

Bilaterally

  • Extend the vertebral column
21
Q

Name the muscle and each group of its fibers

Study These Flashcards
A

Erector Spinae Group

Blue: Spinalis

Yellow: Longissimus

Green: Iliocostalis (reflected)

22
Q

Name the muscle and its origin and insertion

Study These Flashcards
A

Multifidi

Origin: Sacrum and transverse processes of lumbar-cervical vertebrae

Insertion: Spinous processes of lumbar vertebrae through 2nd cervical vertebrae

23
Q

Name the muscle and its actions

Study These Flashcards
A

Multifidi

Actions:

Unilaterally - Rotate vertebral column to opposite side

Bilaterally - Extend the vertebral column

24
Q

Name the muscle and its origin and insertion

Study These Flashcards
A

Rotatores

Origin: Transverse processes of lumbar-cervical vertebrae

Insertion: Spinous processes of lumbar vertebrae through 2nd cervical vertebrae

Span: 1-2 vertebrae

25
Name the muscle and its actions
Rotatores Actions: Unilaterally - Rotate vertebral column to opposite side Bilaterally - Extend the vertebral column
26
Name the muscle and its origin and insertion
Quadratus Lumborum Origin: Posterior iliac crest Insertion: Last rib and transverse processes of 1st through 4th lumbar vertebrae
27
Name the muscle and its actions
Quadratus Lumborum Actions: Unilaterally - Laterally tilt (elevate) the pelvis - Laterally flex the vertebral column to the same side Bilaterally - Assist to extend the vertebral column - Fix the last rib during forced inhalation and exhalation
28
Name the muscle and its actions
Rectus Abdominus Actions: - Flex the vertebral column - Tilt pelvis posteriorly
29
Name the muscle and its actions
Abdominals: External Oblique Actions: Unilaterally - Laterally flex vertebral column to the same side - Rotate vertebral column to the opposite side Bilaterally - Flex the vertebral column - Compress abdominal contents
30
Name the muscle and its actions
Abdominals: Internal Oblique Actions: Unilaterally - Laterally flex vertebral column to the same side - Rotate vertebral column to the same side Bilaterally - Flex the vertebral column - Compress abdominal contents
31
Name the muscle and its actions
Abdominals: Transverse Abdominis Actions: Compress abdominal contents
32
Name the muscle and its actions
Diaphragm Actions: - Draw down the central tendon of the diaphragm - Increase the volume of the thoracic cavity during inhalation
33
Name the muscle and its origin and insertion
Intercostals Origin: Inferior border of the rib above Insertion: Superior border of the rib below
34
Name the muscle and its different fiber groups
Intercostals Blue: External intercostals Green: Internal intercostals
35
Name the muscle and its actions
Intercostals Actions: External intercostals - Draw the ribs superiorly (increasing space of thoracic cavity) to assist with inhalation Internal intercostals - Draw ribs inferiorly (decreasing space of the thoracic cavity) to assist with exhalation
36
Name the mucle in blue and its actions
Serratus Posterior Superior Actions: Elevate ribs during inhalation
37
Name the muscle in green and its actions
Serratus Posterior Inferior Actions: Depress ribs during exhalation
38
Name the muscle and its actions
Intertransversarii Actions: Unilaterally - Laterally flex vertebral column to same side Bilaterlly - Extend the vertebral column
39
Name the muscle and its actions
Interspinalis Action: Extend the vertebral column
BIO 100 Anatomy and Physiology
flashcards
Decks in class (23)
# Cards
Brainscape helps you reach your goals faster, through stronger study habits.
© 2026 Bold Learning Solutions. Terms and Conditions