2. Thoracic Cavity

Question 1

Look and Label Planes

Answer 1

Sagittal
Coronal
Transverse (axial)

Question 2

Axial Skeleton

Answer 2

Skull (cranium + mandible)
Vertebrae
Ribs
Sternum
Sacrum
Coccyx

Question 3

Appendicular Skeleton

Answer 3

Upper extremities (w/ shoulder girdle)

Lower extremities (w/ hip bones)

Question 4

Thoracic Skelton (components)

Answer 4

12 T vertebrae/IV discs
12 pairs of ribs
Costal cartilages
Sternum

Question 5

Thoracic Skeleton (function)

Answer 5

Protect viscera

Attachment site for musculature

Question 6

Look and Label Vertebrae

Answer 6

Vertebral body
Transverse process
Spinous process
Costal facets

Question 7

Look and Label Ribs

Answer 7

Head
Tubercle
Angle
Body 
Costal groove

Question 8

Rib 1

Answer 8

Short, fat, weird

Grooves on superior surface for subclavian artery and vein

Question 9

Rib 11, 12

Answer 9

Shorter

No tubercle

Not much angle

Question 10

Costal Cartilage

Answer 10

Hyaline cartilage

Elastic!

Question 11

Sternocostal Joint

Answer 11

Sternum + Ribs

Mostly synovial

Question 12

Costal Margin

Answer 12

Inferior border along ribs 7-10

Question 13

Rib Classification

Answer 13

1-7: true
8-10: false
11-12: floating

Question 14

Sternum

Answer 14

Manubrium
Body
Xiphoid Process

Jugular (suprasternal) notch
Sternoclavicular joints

Question 15

Sternal Angle

Answer 15

Manubrium + body

Around: rib 2; T4,T5

Question 16

Sternum: Body

Answer 16

Articulates w/ costal cartilage of ribs 2-7

Question 17

Sternum: Xiphoid Process

Answer 17

T10 level

Variable form

Question 18

Xiphisternal Joint

Answer 18

Xiphoid process + body of sternum

Question 19

Muscles of Thoracic Wall

Answer 19

Pectoralis Major
Pectoralis Minor
Serratus Anterior

Question 20

Intercostal Muscles

Answer 20

External (posteroinferior), Internal (anteroinferior), Innermost (anteroinferior)

Stabilize intercostal spaces during respiration

Question 21

Intercostal Neurovascular Bundle

Answer 21

VAN: vein, artery, nerve

Protected by costal groove

Between internal and innermost

Question 22

Collateral Branch

Answer 22

bundle that branches off main Intercostal

sits bt internal and innermost on top of inferior rib

Question 23

Intercostal Nerves

Answer 23

Ventral ramus from T1-T11 spinal nerves

Question 24

Subcostal Nerve

Answer 24

Ventral ramus from T1-T11 spinal nerves

Question 25

Fibers of Intercostal Nerves

Answer 25

Somatic Motor: skeletal muscle (intercostal muscles)

Somatic Sensory: skin of thoracic wall (pain, temp, touch) and joints, muscles, tendons (proprioception)

Sympathetic: sweat glands, arrector pili, blood vessels in skin

Question 26

Intercostal Nerve Block

Answer 26

2 injections in intercostal space (avoiding neurovascular bundle)

Maybe 2 more on outer ribs

Question 27

Blood Supply: Arteries

Answer 27

Thoracic aorta

Internal thoracic arteries

Question 28

Thoracic Aorta

Answer 28

Posterior, unpaired

Branches into posterior intercostal arteries

Question 29

Internal Thoracic Arteries

Answer 29

Anterior, paired

Branch into anterior intercostal arteries (2 per intercostal space)

Question 30

Arterial Anastomosis

Answer 30

posterior intercostal a. and anterior intercostal a. are the same tubey (WHOA)

Body’s backup plan in case something goes wrong

Question 31

Posterior Intercostal Veins Drainage

Answer 31

Posterior intercostal veins - azygos system - superior vena cava - oxygen poor blood to heart

Question 32

Anterior Intercostal Veins Drainage

Answer 32

Anterior intercostal veins - internal thoracic veins - brachiocephalic veins - superior vena cava - oxygen poor blood to heart

Question 33

You need a flash card for the neuro pathway of the intercostal nerves

Question 34

Lateral Pectoral Nerve (innervation)

Answer 34

Pectoralis major

Question 35

Medial Pectoral Nerve (innervation)

Answer 35

Pectoralis Major
and
Pectoralis Minor

Question 36

Long Thoracic Nerve (innervation)

Answer 36

Serratus Anterior