Extrinsic Muscles of the Thoracic Limb Flashcards

1
Q

those that attached the limb to the axial skeleton

A

Extrinsic muscles

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

the muscles that are attached to the limb

A

Intrinsic Muscles

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

extrinsic muscles of the thoracic limb (8)

A
  • Superficial pectoral
  • Deep pectoral
  • Brachiocephalicus
  • Omotransversarius
  • Trapezius
  • Rhomboideus
  • Latissimus dorsi
  • Serratus ventralis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

superficial pectoral m. is divided into 2;

A

descending pectoral
transverse pectoral

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

superficial and smaller than transverse pectoral; innervated by cranial pectoral nerve;

A

descending pectoral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

arises from 1st 2 – 3 sternebrae and inserts into greater tubercle of humerus

A

transverse pectoral

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

*Extrinsic muscle

to adduct the limb and prevent abduction when bearing weight

A

Superficial Pectoral m.

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

*Extrinsic muscle

larger and longer than superficial pectoral; from cranial part of sternum and humerus

A

Deep pectoral m.

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

*Extrinsic muscle

  • adduction of limb
  • to draw limb backwards or pull trunk forward
A

Deep pectoral muscle

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

*3 sections of the brachiocephalicus

– attaches to the neck

A

Cleidocervicalis

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

– attaches to the skull

A

Cleidomastoideus

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

3 sections of brachiocephalicus

A

m. cleidobrachialis
m. cleidocervicalis
m. clediomastoideus

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

O: Clavicle (vestigial) or clavicular intersection
I: distal third of the humerus
A: to advance the limb; to extend the shoulder and draw head and neck to the side

A

Brachiocephalicus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q
  • Innervated by accessory nerve and ventral branches of cervical spinal nerves
  • clavicular intersection
A

Brachiocephalicus

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

arises from the manubrium and inserts in the mastoid part of the temporal bone and the nuchal crest of the occipital bone; ventral part is closely united with cleidomastoideus;

A

Sternocephalicus

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

*Sternocephalicus
cranial part divides into 2 parts:

A

– a. mastoid part– ventral part
– b. occipital part – dorsal part

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q
  • Innervated by accessory nerve and ventral branches of cervical nerves.
  • This is where the external jugular vein can be located
A

Sternocephalicus

18
Q

to draw the head and neck to the side (2)

A

sternomastoideus and
sternooccipitalis

19
Q

to draw the larynx and tongue caudally (2)

A

sternohyoideus and
sternothyroideus

20
Q
  • straplike and extends from the distal end of the spine of scapula to the atlas;
  • innervated by the accessory nerve
A

Omotransversarius

21
Q

cutting the OMOTRANSVERSARIUS at its middle will expose ____ ___ __ __

A

superficial cervical lymph nodes

22
Q

advance the limb and flex neck laterally

A

Omotransversarius

23
Q

– Strong wrapping that extends under the sternocephalicus, cleidomastoideus, omotransversarius and cleidocervicalis n.

A

Deep fascia of the neck

24
Q

– Deep fascia that covers the common carotid artery, vagosympathetic nerve trunk, internal jugular vein and lymphatic trunk

A

Carotid sheath

25
– Connects the dorsal aspects of all vertebral spines except the cervical vertebrae
Supraspinous ligament
26
– Extends from the spine of the first thoracic vertebra to the spine of the axis
Nuchal ligament
27
– A longitudinal fibrous septum that serves as an attachment for many of the cervical muscles
Median raphe of the neck
28
*Extrinsic muscles thin and triangular muscle with cervical and thoracic parts * extends from the median raphe of the neck and the supraspinous ligament (C3 – T9) to the spine of scapula * innervated by accessory nerve
Trapezius
29
*Extrinsic muscles *trapezius elevate and abduct the forelimb
cervical trapezius
30
*Extrinsic muscles *trapezius elevate and abduct the forelimb
thoracic trapezius
31
*Extrinsic muscles Innervated by ventral branches of cervical and thoracic nerves
Rhomboideus
32
rhomboideus is divided into 3 parts:
capital cervical thoracic
33
rhomboideus capitis
capital
34
rhomboideus cervicis
Cervical
35
rhomboideus thoracis
Thoracic
36
to elevate the forelimb and draw scapula to the trunk
Rhomboideus
37
*Extrinsic muscles * large and roughly triangular; * lies caudal to the scapula where it covers most of the dorsal and some of the lateral thoracic wall; * innervated by thoracodorsal nerve
Latissimus dorsi
38
*Extrinsic muscles to draw limb caudally
Latissimus dorsi
39
*Extrinsic muscles * a large, fan-shaped muscle that acts as a sling to support the body between the limbs; * from C5 transverse processes and first 7 or 8 ribs to the serrated face of the scapula; * innervated by ventral branches of cervical nerve and long thoracic nerve * has cervical and thoracic parts
Serratus ventralis
40
which part of serratus ventralis supports the trunk?
cervical part:
41
*serratus ventralis lateral surface of the ribs
thoracic part: