Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Human Structure > Actions and Innvervations > Flashcards

Actions and Innvervations Flashcards

(64 cards)

Start Studying
1
Q

trapezius

A

CNX1

  1. elevation, retraction, depression of scapula
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

damage to spinal branch XI causes what problems with the trapezius?

A

partial paralysis:

  1. shoulder drop
  2. weakness in shoulder
  3. difficulty lifting upper limb >90
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

damage to spinal branch XI causes what problems with the sternocleidomastostoid?

A
  1. flaccid paralysis of sternocleidomastoid (SCM)
  • torticollis
  • contraction/fibrosis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

latissimus dorsi

A

thoracodorsal nerve and artery

  1. extension of upper limb
  2. adduction of upper limb
  3. internal (medial) rotation of the arm
  4. moves trunk forward when humerus is fixed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

levator scapulae

A

dorsal scapular nerve (C5)

  1. elevation of scapula
  2. rotation of glenohumeral joint
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

rhomboid major and minor

A

dorsal scapular nerve (C5)

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

SP superior innervation and blood supply

A

T2 to T5 intercostal nerves;

T2 to T5 posterior intercostal arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

SP inferior innervation and blood supply

A

T9 to T12 intercostal arteries

T9 to T11 posterior intercostal nerves
T12 subcostal artery

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

thyrocervical trunk deep branch vascularizes what?

A

trapezius, levator scapulae, and thomboids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what anastomoses the superficial back?

A
  1. dorsal scapular a.
  2. suprascapular a.
  3. subscapular a. (&thoracodorsal)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

arteries which supply the brain

A

vertebral arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

bones united by fibrocartilage; strong but allow limited movement

A

symphysis

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

aqueous fluid similar to egg white for lubrictation

A

synovial fluid

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

gelatinous shock absorber which is part of the intervertebral disk (symphyses)

A

nucleus puluposus

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

nuchal ligament function

A

muscle attachments

  1. limits flexion
  2. separtes L and R compartments
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

suboccipital triangle muscles

A

nod and tilt head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

deep intrinsic/segmental back muscles (rotatores, multifidus, semispinalis)

A

muscles of respiration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

intermediate extrinsic back muscles (erector spinae)

A

lift trunk from bent over position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

superficial intrinsic back muscles (splenius)

A

rotation, lateral flexion, extension of head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

intrinsic back muscles and posterior neck muscles are innervated segmentally by ?

A

dorsal primary rami

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

thoracic, lumbar, and sacral nerves correspond to vertebrae _____

A

above

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

sternomastoid

A

innervation: CNXI

blood supply: multiple

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

scalene muscles

A

cervical nerves

elevate ribs 1 and 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

levator scapulae

A

elevates scapula

dorsal scapular nerve (C3 and 4)

dorsal scapular artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
splenius muscles
inn: dorsal rami of middle and lower cervical spinal nerves extend, rotate, and laterally flex head
26
serratus anterior (medial wall of axilla)
long thoracic nerve holds scapula to thoracic wall protraction of scapula upward rotation of glenoid cavity
27
injury of serratus anterior may lead to ?
winging of scapula
28
medial wall of axilla innervated by?
long thoracic nerve from roots of BP
29
serratus anterior paralysis causes what?
weakness in abduction of arm above 90
30
pectoralis major
adductions and medially rotates arm clavicular head: flexion of arm sternocostal head: extension of fixed arm inn: lateral and medial pectoral nerves
31
pec minor
stabilizes scapula against thoracic wall by drawing it anteriorly and inferiorly assists in elevation of ribs during deep inspiration inn: medial pec nerve
32
deltoid
axillary nerve abduction (can't start) anterior: flexion and medial rotation posterior: extension and lateral rotation
33
supraspinatus action
initiates abduction of the arm and assists delt
34
subscapularis action
adducts and medially rotates arm
35
infraspinatus and teres minor action
laterally rotates the arm
36
supraspinatus and infraspinatus innervation
suprascapular nerve
37
teres minor innervation
axillary nerve
38
subscapularis innervation
upper and lower subscapular nerves
39
teres major innervation and action
inn: lower subscapular nerve extends, adducts, and medially rotates arm
40
brachialis
flexion at elbow
41
biceps brachii
flexes supinated forearm; supinates forearm
42
coacobrachialis
resists discloation of the shoulder, helps in flexion and adduction at the shoulder
43
triceps
extension at elbow radial nerve
44
anterior comp of arm innervated by ?
musculocutaneous nerve
45
blood supply to anterior compartment of arm
brachial artery; superior ulnar col. | inferior ulnar coll.
46
posterior comp of arm blood supply
deep brachial
47
what comes out of triangular interval?
radial nerve and deep brachial artery
48
what comes out of triangular space?
circumflex scapular
49
what comes out of quadrangular space?
axillary; posterior humoral circumflex
50
what innervates the gluteus maxiumus?
inferior gluteal n
51
what muscles are innervated by the superior gluteal? *they are also the only three medial rotators of the glute region, and they all abduct
gluteus medius and minimus, tensor fasciae latae
52
what nerve innervates the piriformis?
sacral (S1-2)
53
what muscles are innervated by the nerve to obturator internus?
obturator internus and superior gemellus
54
what muscles are innervated by the nerve to quadratus femoris?
interior gemellus and quadratus femori
55
what muscles muscles are innervated by the tibial sciatic nerve?
hamstrings
56
all anterior muscles of the leg are innervated by the ? nerve
femoral
57
the three vastus all do what?
extend leg
58
what is the fxt of the Sartorius?
flexes and rotates thigh laterally, flexes and rotates leg medially
59
what is the function of the rectus femoris?
flexes thigh, extends leg
60
the obturator externus is a medial muscle of the thigh but its action is ?
rotation of thigh laterally
61
what are the functions of the pectineus?
flexion thigh | adduction thigh
62
all medial thigh muscles are innervated by ? and vascularized by ?
obturator nerve obturator artery *pectinues also receives innervation from femoral n; adductor magnus from sciatic n (tibial)
63
posterior thigh innervation
sciatic nerve (tibial)
64
blood supply to posterior thigh
perforating vessels inferior gluteal popiteal

Human Structure (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions