Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CAPS 391 - Gross Human Anatomy > Muscles - Trunk > Flashcards

Muscles - Trunk Flashcards

1
Q

What are the 3 classifications for the Muscles of the back?

A
  • Superficial
  • Intermediate
  • Deep Layers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What layers of back muscle are considered the extrinsic back muscles?

A
  • superficial

- Intermediate layers

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

What layer of back muscles is considered the intrinsic back muscles?

A
  • the deep layer
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the four important superficial muscles of the back?

A
  • Trapezius B
  • Levator Scapulae
  • Rhomboid Muscles (major and minor)
  • Latissimus Dorsi
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the Origin points of the Trapezius B?

A
  • External Occipital Protuberance (EOP)
  • Cervical Spinous Processes
  • Thoracic Spinous Processes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the Insertion points of the Trapezius B?

A
  • Clavicle (upper fibers)
  • Acromion (middle fibers)
  • Spine of Scapula (inferior fibers)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the 3 functions of the Trapezius B muscle?

A
  • Elevation: of the shoulder by the upper fibers
  • Depression: of the shoulder by the inferior fibers
  • Retraction: of the scapula by the middle fibers (adduction)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What innervates the Trapezius B muscle?

A
  • Cranial Nerve XI: accessory
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the origin of the Levator Scapulae?

A
  • Upper cervical vertebrae (transverse processes of CI-CIV)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the Insertion point of the Levator Scapulae?

A
  • Superior Angle of the scapula (upper part of the medial border of scapula)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the Function of the Levator Scapulae?

A
  • Elevates the scapula or shoulder
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What innervates the Levator Scapulae Muscles?

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

What are the origins of the Rhomboid Muscles (majors and minors)?

A
  • Spinous Processes of lower cervical vertebrae

- Spinous Processes of Upper thoracic vertebrae

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

What is the insertion point of the Rhomboid Muscles (major and minor)?

A
  • Medial border of the scapula
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the functions of the Rhomboid Muscles?

A
  • Retraction of shoulders

- Elevation of the shoulders

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

What innervates the Rhomboid Muscles?

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

What are the origin points of the Latissimus Dorsi?

A
  • Spinous process of the lower thoracic Vertebrae
  • Spinous process of all lumber vertebrae
  • Sacral and Iliac Crests
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the insertion point of the Latissimus dorsi?

A
  • Intertubercular groove of humerus (medial)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What are the Functions of the Latissimus Dorsi?

A
  • Prime Extensor: main extensor muscle of the shoulder

- Adduction of the shoulder: medial rotation

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

What innervates the Latissimus Dorsi?

A
  • Thoracodorsal nerve from the brachial plexus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are the three categories of the the Deep Muscles of the back?

A
  • Erector Spinae: straightener/extensor of the spine
  • Transversospinalis
  • Segmental Muscles
22
Q

What are the three components of the Erector Spinae deep back Muscles?

A
  • Iliocostalis: most lateral bundles
  • Longissimus:
  • Spinalis: most medially bundle
23
Q

What are the origins and insertion points of the Erector Spinae muscles?

A

Origin
- Ilium and ribs
Insertion
- Ribs and vertebrae

24
Q

What are the functions of the Erector Spinae muscles?

A
  • Extends the spine
  • Supports the Spine
  • Maintains body posture
25
Q

What Innervates all the deep muscles of the back?

A
  • Posterior (dorsal) rami of spinal nerves
26
Q

What are the 3 parts of the Transversospinalis muscle groups?

A
  • Semispinalis: The Longest
  • Multifidus
  • Rotatores: The shortest
27
Q

What are the origins and insertion points of the Transversospinalis Muscles?

A

Origins
- Transverse Processes of vertebrae
Insertion
- spinous processes of vertebrae

28
Q

What are the functions of the Transversospinalis Muscles?

A
  • Rotation of the spine

- Support and maintain spine posture

29
Q

What are the 2 Segmental Muscles of the Back?

A
  • Interspinales: between the spinous process

- Intertransveratii: between the transverse process

30
Q

What are the functions of the Segmental Muscles of the back?

A
  • Lateral Flexion of the spine
  • Extend the spine
  • Support the spine
  • Maintain body posture
31
Q

What is the classification for extrinsic muscles of the Thoracic Muscles?

A
  • They go from the Thorax to the upper limbs
32
Q

What are the 2 important Extrinsic Muscles?

A
  • Pectoralis Major

- Serratus Anterior

33
Q

What are the origin points of the Pectoralis Major?

A
  • Sternum
  • Ribs (costal cartilages)
  • Medial Clavicle
34
Q

What is the Insertion point of the Pectoralis Major?

A
  • Proximal Humerus (lateral lip of intertubercular groove)
35
Q

What are the functions of the Pectoralis Major?

A
  • Medial Rotation of the shoulder
  • Adduction
  • An accessory respiratory muscle
36
Q

What Innervates the Pectoralis Major?

A
  • Brachial Plexus (medial and lateral pectoral nerves)
37
Q

What is the Origin of the Serratus Anterior?

A
  • The First 9 Ribs
38
Q

What is the insertion point of the Serratus Anterior?

A
  • Wraps around the torso and inserts into the medial border of the scapula from the front
39
Q

What is the function of the Serratus Anterior?

A
  • Prime Protractor of scapula (movement gives extra reach forward)
  • Upward Rotation of scapula
  • Stabilizes scapula against thorax
40
Q

What innervates the Serratus Anterior?

A
  • Brachial Plexus (long thoracic nerve)
41
Q

What are the 2 important Intrinsic Muscles of the Thorax?

A
  • Intercostals

- Diaphragm

42
Q

What are the three different Intercostal Muscles?

A
  • External Intercostal
  • Internal Intercostal
  • Innermost Intercostal
43
Q

What is the origin and insertion point of the Intercostal muscles?

A
  • Ribs to ribs
44
Q

What are the functions of the Intercostal muscles?

A
  • Move the ribs during respiration (elevation/depression)
45
Q

What innervates the intercostal muscles?

A
  • The intercostal nerves from Thoracic Spinal Nerves
46
Q

What is the structure of the Diaphragm?

A
  • It is a dome shaped muscle
47
Q

What are the origins points of the Diaphragm?

A
  • xiphoid process
  • Costal cartilage of lower 6 ribs
  • Upper Lumbar Vertebrae
48
Q

What is the insertion point of the Diaphragm?

A
  • The flat dense sheet was called central tendon of diaphragm (dome of the muscle)
49
Q

What are the functions of the Diaphragm?

A
  • Decreasing intrathoracic pressure: contraction during inhalation pulls central tendon down
  • Increasing Intrabdominal: Pressure by pushing the organs down.
  • Coughing, sneezing, hiccups.
50
Q

What innervates the Diaphragm?

A
  • Phrenic Nerve from the cervical plexus
51
Q

What are the three major openings in the diaphragm for?

A
  • Inferior Vena Cava
  • Esophagus
  • Aorta

CAPS 391 - Gross Human Anatomy (33 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions