CP Anatomy Etc.

Question 1

Rib types:
Typical, atypical
True, false, floating

Answer 1

Typical: 3-9
Atypical: 1-2, 10-12
True: 1-7
False: 8-10
Floating: 11-12

Question 2

1st rib distinct features (3)

Answer 2

Groove for subclavian a., subclavian v., scalene tubercle.

Question 3

2nd rib distinct feature

Answer 3

Tuberosity of serratus anterior m.

Question 4

Costal cartilage 1-7, 8-10

Answer 4

1-7 articulate directly with sternum.

8-10 joint cartilage above them.

Question 5

Rib articulating arrangement

Answer 5

Head of rib articulates with Inferior costal facet of the vertebra superior. The head articulates to the superior costal facet and transverse process of vertebra at same level.

Question 6

Features of the right lung

Answer 6

Cardiac impression
Groove for azygos v.
Groove for esophagus 
Groove for SVC, IVC
Groove for 1st rib
Groove for brachiocephalic v.

Question 7

Features of the left lung

Answer 7

Cardiac impression
Groove for aortic arch
Groove for descending aorta
Groove for 1st rib
Groove for subclavian a.

Question 8

Recesses (2)

Answer 8

Costomediastinal recess

Costodiaphragmatic recess

Question 9

Parietal pleurae (4)

Answer 9

Costal parietal pleura
Mediastinal parietal pleura
Diaphragmatic parietal pleura
Cervical parietal pleura

Question 10

Sternal line of pleural reflection

Answer 10

Costal pleura becomes mediastinal pleura anteriorly

Question 11

Costal line of pleural reflection

Answer 11

Costal pleura becomes diaphragmatic pleura

Question 12

Vertebral line of pleural reflection

Answer 12

Costal pleura becomes mediastinal pleura posteriorly

Question 13

Trachea to alveolar duct (8)

Answer 13

Trachea
Main bronchus
Lobar bronchus
Segemental bronchi
No cartilage from now on:
Conducting bronchiole
Terminal bronchiole
Respi bronchiole
Alveolar duct

Question 14

Angina pectoris

Answer 14

Pain that originates in the heart and produces pain of the chest. Pain is usually from ischemia in an area of the heart tissue.

Question 15

Layers of heart (5)

Answer 15

Fibrous skeleton
Parietal serous pericardium
Visceral serous pericardium (epicardium)
Myocardium
Endocardium

Question 16

Surfaces of heart include:
Sternocostal
Diaphragmatic
Pulmonary

Answer 16

RV
RV, LV
RA, LV occupy cardiac impression

Question 17

Right AV groove includes

Answer 17

Right coronary a.

Question 18

Left AV groove includes

Answer 18

Coronary sinus

Question 19

Anterior IV groove includes

Answer 19

Anterior interventricular a. and great cardiac v.

Question 20

Posterior IV groove includes

Answer 20

Posterior interventricular a. and middle cardiac v.

Question 21

Left and right recurrent laryngeal ns. location

Answer 21

Left: goes under DA.
Right: goes under right subclavian a.

Question 22

Features of the RA (7)

Answer 22

Sinus venarum
Pectinate m.
Crista terminalis
Sulcus terminalis 
IA septum
Opening for coronary sinus
SVC and IVC drain here

Question 23

Features of the RV

Answer 23

Cusps
Chordae tendinae
Papillary ms. (3)
Septomarginal trabeculum
Tricuspid valve
Trabeculae carnae
Pulm valve

Question 24

Cardiac cath

Answer 24

Catheter into the femoral a. to the IVC and RA to visiualize the pulm trunk and pulm as.

Question 25

Features of the right atrium

Answer 25

Auricle of RA Pectinate m. Opening for pulm vs.

Question 26

Aortic vestibule

Answer 26

Smooth wall leading to the ascending aorta. | LV

Question 27

Conus arteriosus

Answer 27

Smooth wall leading to the pulm trunk. | RV

Question 28

Cardiac referred pain

Answer 28

Ischemia stimulates visceral pain sensory fibers in the heart of the ANS. Usually area innervated by left medial brachial cutaneous n.

Question 29

Cardiac tampanade

Answer 29

Increased fluid in the pericardium causing compression of the heart.

Question 30

Branches off of the RCA (7)

Answer 30

``` SA nodal a. Conus branch Atrial branch Right marginal a. AV nodal a. Posterior interventricular a. Right posterolateral a. ```

Question 31

Branches off the LCA (2)

Answer 31

Anterior interventricular a. | Circumflex a.

Question 32

Branches of the LAD (2)`

Answer 32

Conus branch | Diagonal a.

Question 33

Branches of the circumflex a. (2)

Answer 33

Left marginal a. | Posterior left ventricular a.

Question 34

Layout of the internal thoracic a.

Answer 34

See drawings

Question 35

Unpaired visceral branches (3)

Answer 35

Mediastinal a. Esophageal a. Pericardial a.

Question 36

Paired lateral visceral branches (2)

Answer 36

Right and left bronchial as.

Question 37

Paired segmental parietal branches (2)

Answer 37

Posterior intercostal a. --> Collateral branch, dorsal branch and lateral mammary branch. Subcostal a.

Question 38

Small cardiac v. traves with:

Answer 38

Right marginal a.

Question 39

Azygos system setup

Answer 39

See drawings.

Question 40

Branches of the vagus ns.

Answer 40

``` L/R Recurrent laryngeal ns. Pulm branches Cardiac branches Esophageal branches Ant/post vagal trunks ```

Question 41

Intercostal n. setup

Answer 41

See drawing

Question 42

Sympathetic innervation of the thorax

Answer 42

From SC lateral horn --> splanchnic ns.

Question 43

Route of the presynaptic ns.

Answer 43

Lateral horn --> anterior root --> anterior ramus --> paravertberal ganglion via rami communicants.

Question 44

3 options for synapsing

Answer 44

1. presynaptic fibers can enter the paravertebral ganglion and synapse onto a postsynaptic neuron on same level. 2. presynaptic fibers can enter paravertebral ganglion and travel up/down sympathetic chain to synapse at another level. 3. presynaptic fibers can travel thru the paravertebral ganglion and continue thru a abdominopelvic splanchnic n. to synapse in a prevertebral ganglion.

Question 45

Parasympathetic innervation in the thorax is via:

Answer 45

Vagus n. and its derivatives

Question 46

PSNS sources (2)

Answer 46

CNs (3, 7, 9, 10) | S2-4