Exam 4 Regional Anatomy; Back, Abdomen Flashcards Preview

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Flashcards in Exam 4 Regional Anatomy; Back, Abdomen Deck (82)
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1

What are the superficial group of muscles that produce and control limb movements and intermediate group of muscles involved in respiration?

Extrinsic Back Muscles

2

What group of muscles in the back are considered the true back muscles because they specifically act on vertebral column, producing its movements and maintaining posture?

Intrinsic Back Muscles

3

What are the superficial back muscles?

-Trapezius
-Levator Scapulae
-Rhomboideus (Minor and Major)
-Latissimus dorsi

4

This group of intermediate back muscles is comprised of superficial respiratory muscles?

Serratus Posterior Group

5

What is the location on the back of the Serratus posterior group?

-Serratus Posterior Superior: Deep to Rhomboids, under scapula
-Serratus Posterior Inferior: Deep to Latissimus Dorsi

6

What are the Serratus muscles innervated by?

Spinal Intercostal Nerves

7

What function does the Serratus Posterior Superior serve?

Elevates Rib Cage: Important in Inspiration

8

What function does the Serratus Posterior Inferior serve?

Depresses lower four ribs: Important in forceful expiration

9

Which dermatome is the most superior and does not supply the upper limb?

T1

10

What forms the Thorax?

-Ribs: 12 Pairs
-Sternum
-Costal Cartilages
-Thoracic Vertebrae: 12

11

What provides attachment points for muscles of the neck, thorax, upper limbs, abdomen, and back?

Thoracic Cage

12

What is comprised of the thoracic cage, and associated skin, muscles, and fascia?

Thoracic Wall

13

This protects the contents of the thoracic cavity (Heart and Lungs) and some abdominal organs (Liver, Spleen)?

Thoracic Wall

14

Name the externally visible features of the thoracic wall?

-Jugular Notch (Suprasternal Notch)
-Clavicles
-Pectoralis Major
-Serratus Anterior
-Costal Arch of ribs 7-10

15

This group of thoracic wall muscles are generally considered to be upper limb muscles and are anterior thoracic muscles or axial muscles that produce and control limb movements?

Thoracoappendicular Muscles

16

What are the three layers of the Intercostal Muscles?

External Intercostal (Outer)
Internal Intercostal (Middle)
Innermost Intercostal (Inner)
also on anterior aspect Transversus Thoracis
On posterior aspect Subcostal

17

Which Intercostal Muscles elevate the rib cage (Inspiration)?

External Intercostal Muscles

18

Which intercostal muscles travel obliquely downward lateral to medial?

External Intercostal Muscles

19

Which intercostal muscles are oriented at right angles to external intercostal muscle (up and in)?

Internal Intercostal Muscles

20

Which intercostal muscles depress the rib cage important for forced expiration?

Internal Intercostal Muscles

21

These intercostal muscles originate from the sternum and insert on the cartilage of ribs 2-6?

Transverse Thoracis (Depress the ribs)

22

Name the muscles of Inhalation?

Sternocleidomastoid
Scalene
External Intercostal
Diaphragm

23

Name the muscles of Exhalation?

Internal Intercostal
External Oblique
Internal Oblique
Transversus abdominis
Rectus Abdominis

24

These intercostal muscles bride two intercostal spaces?

Subcostal

25

Which nerves supply the thoracic wall?

Thoracic Spinal Nerves: 12 Pairs

26

What do the Thoracic Spinal Nerves do upon leaving the Intervertebral Foramina?

Divide: Anterior Rami and Posterior Rami

27

The Anterior rami of nerves T1-T11 form what?

Intercostal Nerves

28

The Posterior rami supply what?

Joints, Muscles, and Skin of the back in the thoracic region

29

The intercostal muscles are innervated by what?

Segmental Intercostal Nerves

30

The Serratus Anterior Muscle is innervated by what?

Brachial Plexus (Long Thoracic Nerve)