Superficial Thoracic Wall Flashcards Preview

Gross Anatomy/Embryology > Superficial Thoracic Wall > Flashcards

Flashcards in Superficial Thoracic Wall Deck (47):
1

head of rib

most proximal portion of rib with articular facets
where rib joins vertebra

2

neck of rib

between head of rib and tubercle

3

articular facets of rib

on head of rib
superior and inferior
articulates off vertebrae

4

tubercle of rib

articulates with transverse costal facet of thoracic vertebra of the same number
contains articular facets

5

shaft of rib

distal to tubercle of rib

6

costal angle

curve of rib

7

costal groove

along inferior surface of rib
contains neurovascular bundle

8

first rib

articulates with manubrium
inferior to clavicle
sternocostal joint is a synchondrosis
highest, shortest, broadest, and most sharply curved rib

9

sternum

1. manubrium
2. body
3. xiphoid process

10

costal cartilage

attached to sternum and anterior end/most distal part of rib
ribs are classified by the way their costal cartilages articulate medially

11

true ribs

1-7
costal cartilage attaches directly to sternum

12

false ribs

8-10
costal cartilage articulates with cartilage of rib above
seen along costal margin

13

floating ribs

11 and 12
do not articulate anteriorly with skeletal element but end in abdominal muscles

14

breast

lateral border of sternum to midaxillary line and from rib 2 to rib 6
anterior to pectoral fascia
divided into four quadrants centered on nipple

15

pectoral fascia

deep fascia surrounding pectorals major
attached to the overlying skin by the suspensory ligaments of the breast

16

suspensory ligaments of the breast

white tissue that passes between the lobes of the mammary glands

17

areola

surrounds nipple

18

nipple

along T4
innervated by T4 nerve

19

lactiferous ducts

not always found
generally 15-20
converge on the nipple

20

lactiferous sinus

enlarge portion of lactiferous ducts
deep to the nipple

21

retromammary space

superficial to the deep fascia
allows for motion
normal breast can be easily separated from underlying deep fascia of the pectoralis major

22

jugular notch

superior to mediastinum
on the superior aspect of the manubrium between the sternal ends of the clavicles

23

clavicles

articulate on the left and right side of the manubrium superior to articulation of the manubrium with the first rib

24

sternal angle (angle of Louis)

articulation between manubrium and body of sternum (at rib 2)
level of the second costal cartilage anteriorly and the level of the T4/T5 intervertebral disc posteriorly

25

xiphisternal junction

articulation between body of sternum and xiphoid process

26

costal margins

lower edge of the ribs
bottom end of rib cage
formed by ribs 7-10

27

acromion

lateral most tip of scapula
distal end of the clavicle
where clavicle and scapula meet
superior to the anterior axillary fold

28

deltoid

muscle that attaches medially to the spine of the scapula, acromion of the scapula, lateral one third of the clavicle and laterally with the deltoid tuberosity of the humerus

29

cephalic vein

between deltoid and pectorals major in the deltopectoral triangle

30

lateral cutaneous branches of the intercostal nerves

near mid axillary line they leave the intercostal space and enter superficial fascia

31

intercostal space

interval between adjacent ribs
filled with three layers of muscle

32

the three layers of muscle that fill the intercostal spaces

from superficial to deep
1. external intercostal muscle
2. internal intercostal muscle
3. innermost intercostal muscle

33

how are intercostal spaces numbered?

according to the rib that forms the superior boundary

34

anterior axillary fold

lateral border of the pectorals major

35

order of rib features proximally to distally

articular facets --> head --> neck --> articular facet for transverse process (tubercle) --> costal angle (shaft) --> costal groove (shaft)

36

what happens to ribs moving proximally to distally?

ribs angle inferiorly approximately two vertebral levels as they wrap laterally and anteriorly around the thorax

37

scapula

consists of acromion process laterally and coracoid process anteriorly

38

with which other bones does the clavicle articulate?

medial end of the clavicle articulates with the manubrium of the sternum at the sternoclavicular joint
lateral end of the clavicle articulates with the acromion of the scapula at the acrominoclavicular joint

39

superficial fascia

contains fat, superficial veins, and cutaneous nerves

40

pectoral region

covers the thoracic wall and part of the lateral thoracic wall

41

mammary gland

modified sweat gland contained within superficial fascia of the breast

42

when breast is fixed to pectoralis major, what is this indicative of? explain

sign of breast cancer

43

platysma muscle

thing but broad muscle of facial

44

platysma muscle

thin but broad muscle of facial expression (expression of fascia) which extends inferiorly through the neck into the superficial fascia of the superior thorax

45

anterior cutaneous nerves

small
emerge from intercostal space lateral to the borders of the sternum

46

mediastinum

directly behind the sternum between the two lungs (pleural cavities)

47

lateral cutaneous branches of the intercostal nerves

located near the midaxillary line where they leave the intercostal space to enter the superficial fascia