Week 5: Anatomy: Thoracic And Ab Walls

Front 1

The manubrium is anterior to thoracic vertebrae _____, and has 3 notches which are the ________

Back 1

T3&T4; suprasternal (jugular) and supraclaviculars

Front 2

Body of sternum is anterior to T_______

Back 2

T5-9

Front 3

Xiphoid process

Back 3

Ossifies by age 4.

Front 4

Importance of xiphosterno joint

Back 4

defines inferior border of thoracic cage

Front 5

Importance of sternal angle

Back 5

Formed by the manubrium and sternum. Found at the level of the 2nd rib. Also pericardial sac extends to this level, and trachea bifurcates here as well.

Front 6

1st rib articulates with ____________

Back 6

costal incisor (notch) on manubrium

Front 7

3 types of ribs

Back 7

True: 1-7, attach directly to sternum (can be through costal cartilage)
False: 8-10, attach to ribs above, through costal cartilage
Floating: 11-12, a type of false rib, do not attach anteriorly

(7 true, 5 false)

Front 8

surface anatomy: ribs (8)

Back 8

Head: articulates with vertebra
Neck
Tubercles: artic. w/ trans process of vert
Body
Shaft
Angle
Subcostal groove - inferior aspect, houses neruovascular bundle

Front 9

3 joints of thorax

Back 9

costovertebral: ribs and body of vert - synovial
sternocostal: costal margin and sternum - synovial (?)
costochondral: costal margin and ribs - synchondrosis - hyaline cart

Front 10

3 parts of pelvic bone and their importand features

Back 10

ilium: anterior iliac spine
ischium: ishial tubercule
pubis: pubic symphasis

Front 11

What type of gland is in the breast?

Back 11

Modifies sweat gland

Front 12

Serratus anterior

Back 12

respiration. o:Ribs 1-8, i: scapula (vertebral border). Protracts scapula

Front 13

Deep back muscles are innervated by

Back 13

dorsal primari rami

Front 14

Pectoralis Major

Back 14

O: clavicle, medial 1/3 of sternum
I: Humerus
Innervation (N): lateral and medial pectoral nerves
A: adduct, internally rotate arm (?)

Front 15

What is unusual about the lateral and medial pectoral nerve?

Back 15

The lateral is MEDIAL to the medial nerve.

Front 16

Pectoralis minor

Back 16

O: Ribs 3-5
I: Scapula
N: Medial pectoral nerve
A: Depresses shoulder

Front 17

Extrinsic muscles of anterior abdominal wall (4) and their function

Back 17

Rectus abdominis, external oblique, internal oblique, transversus abdominis; respiration

Front 18

Intrinsic thoracic muscles (3)

Back 18

External intercostals: run anterior and inferior
Internal ntercostals: Perpendicular to ext. intercostal
Innermost intercostal: same as int. intercostal

Front 19

Where is are the intercostal neurovasular bundles found

Back 19

between internal intercostal and innermost intercostal

Front 20

Blood supply and innervation of thoracic wall?
Arterial origins?
Nerve origins?

Back 20

-intercostal neurovascular bundle.
-Thoracic aorta (posterior segmental branches), internal thoracic artery (branch of subclavian). Ant and Post intercostals anastomose.
-spinal nerves: mixed.

Front 21

Subdivision of Ab. Cavity:

INCOMPLETE CARD

Back 21

4: upper/lower right/left

9:

Front 22

inguinal ligament attaches to what parts of which bone

Back 22

anterior superior iliac spine, pubic tubercle

Front 23

2 components of superficial fascia

Back 23

Camper's: fatty
Scarpa's: membranous

Front 24

Deep fascia

Back 24

wraps around muscles --> epimysium

Front 25

Rectus sheath

Back 25

3 flat muscles: ext/int obliques, trans abdominis
1 strap muscle: rectus abdominis
Plus aponeurosis

Front 26

Linea alba

Back 26

Ant to rectus ab., formed by the two aponeurosis of the ext. obliques.

Front 27

aponeurosis of int oblique

Back 27

wraps around rectus ab.

Front 28

aponeurosis of trans abd

Back 28

posterior to rectus abdominis

Front 29

Arcurate line (?)
Incomplete card

Back 29

??

Front 30

Ext oblique

Back 30

O: Ext aspect of lower 8 ribs
I: Iliac crest, aponeurosis of ant ab wall
Orientation: same as ext intercostal (like putting hand in pocket)
N: ?
(A: pulls chest downward, compresses ab cavity), limited flexion and rotation of spine)

Front 31

Int Oblique

Back 31

O: lumbodorsal fascia, iliac crest, inguinal ligament
I: Costal cartilage of last 3 ribs
Orientation: opp. of ext (like putting hand in INNER pocket)
N: Iliohypogastric/Ilioinguinal
(A: antagonist to diaphram)

Front 32

Transversus Abdominis

Back 32

O: Internal aspect of lower 6 costal cartilages, iliac crest
I: Linea Alba
Orientation: horizontal
N: Iliohypogastric/Ilioinguinal
(A: compression of ribs and viscera)

Front 33

rectus abdominis

Back 33

O: Pubic symphysis
I: Xiphoid Process, costal cartilages of 5-7
(N: thoracoabdominal nerves 7-12)
A: ?

Front 34

hernia

Back 34

contents of body cavity bulge out

Front 35

inguinal ligament

Back 35

aponeurosis of external oblique folds upon itself. O: ant sup iliac spin, pubic tubercles

Front 36

inguinal canal

Back 36

superior, inferior, and parallel to ing. ligament

Houses spermatic cord in males

Front 37

4 walls of the inguinal canal

Back 37

Anterior: aponeurosis of ex oblique
Post: transversalis fascia, reinforced by conjoint tendon
Sup: aponeurosis of int obliqu and trans. ab.
Inf: superior edge of inguinal ligament (?)

Front 38

Conjoint Tendon

Back 38

internal oblique aponeurosis and transversus abdominus. Helps form posterior wall of inguinal canal (along with transversalis fascia)

Front 39

Superficial inguinal ring

Back 39

opening in ext oblique aponeurosis

Front 40

Deep inguinal ring

Back 40

opening in transversalis fascia