EXAM I Flashcards
Cause of pneumothorax
Lung collapse due to air infiltrating the pleural cavity breaking the surface tension between the parietal and visceral pleural cavities
Define hemothorax, hydrothorax, chylothorax
Hemothorax - blood in pleural cavity
Hydrothorax - serous fluid in pleural cavity
Chylothorax - lymph in pleural cavity
Cause lung collapse
Pleuritis
Inflammation of the pleura
Scraping sounds during ascultation, sharp stabbing pain
Pulmonary Embolism
Obstruction of pulmonary artery by blood clot, fat globule, or air bubble
DVT common cause
Bronchogenic Carcinoma
Lung Cancer
Cancer arising from bronchial epithelium
Smoking major cause
Highly metastatic due to association of lymphatics in bronchial tissue
Malingnant Mesothelioma
Lung cancer affecting pleura (mesothelium)
Asbestos exposure
Pulmonary Tuberculosis
TB
Bacterial lung infection; can spread to other organs
Airborne
Describe the location of the heart
Left of the body midline posterior to the sternum in the middle mediastinum
Rotated so that the right side faces anterior and left is more posterior
What forms the base of the heart?
Left atrium
Sits at the posterosuperior surface of the heart
The pericardium of the heart has three primary layers. If the pericardium of the heart is pierced by a needle, which of these primary layers would the needle first pass through?
Visceral pericardium
Pleural pericardium
Parietal pericardium
Fibrous pericardium
Epicardium
Fibrous pericardium
List the pericardium layers from superficial to deep
Outer portion - fibrous pericardium
Inner Portion - serous pericardium - parietal layer —> visceral pericardium layer; outermost layer of heart wall (epicardium) (pericardial cavity with serous fluid in between)
Pericardium is a membrane that encloses and protects the heart
Name the two layers of superficial fascia of the abdominal wall. What are they continuous with? Where is potential space within the abdominal wall?
Camper’s Fascia - fatty layer; continuous with superficial fatty layers of the thigh, thorax, and perineum (penis & scrotum)
Scarpa’s Fascia - membranous layer; deep, continuous with fascia lata of thigh and with deep layer of superficial perineal fascia
Potential Space can be found within the membranous layer (Scarpa’s fascia) of superficial fasica and deep fasica (Investing fascia superficial) of the external oblique muscle; where fluid can leak
List the anterior abdominal walls and state their functions collectively
External Oblique, Internal Oblique, Transverse abdominis, Rectus abdominis
Flex, stabilize, and laterally bend vertebral column
Describe the significance of the arcuate line and the abdominal musculature
Above the arcuate line, you have the internal oblique aponeurosis surrounding the rectus abdominis
Below the arcuate line, you have the rectus abdominis sitting above/directly on the transversalis fascia
Which abdominal muscle forms the inguinal ligament?
External oblique
List the posterior muscles of the abdominal wall and state their function collectively
Psoas major, Psoas minor, Iliacus, Quadratus lumborum
Flexors of the trunk and/or hip
Describe the location and pathway of the cutaneous branches of the anterior abdominal nerves
Via ventral rami or intercostal nerves, are between internal oblique and transverse abdominis and pierce the rectus sheath to supply the rectus abdominis, skin, muscles, and parietal peritoneum
List the 3 anterior abdominal wall nerves, which plexus are they apart of? What areas do they supply?
I.G.I. (Iggy) = via lumbar plexus (L1+L2)
Iliohypogastric - L1; lateral & anterior cutaneous branches, supplies suprapubic region
Genitofemoral - L1,L2; Genital branch exits inguinal canal thru superficial inguinal ring, supplies cremaster muscle or cutaneous to labium majus, Femoral branch is cutaneous to femoral triangle area
Ilioinguinal - L1; enters inguinal canal and emerges thru superficial inguinal ring, suppies groin & scrotum/labium majus
Describe characteristics of femoral hernias; location and more common in men or women?
Upper thigh, inferior to inguinal ligament, originating in femoral triangle
Medial portion of femoral triangle = weak
Mainly in females due to wider femoral triangle bc of wider hips
Whereas males more likely develop inguinal hernias
Distinguish between direct and indirect hernias
Direct - travels directly through the ab wall, passes medial to inferior epigastric vessels punching through peritoneum and transversalis fascia. Bulge in the lower anterior abdominal wall. Loop travels thru superficial inguinal ring but not the entire length
Indirect - travels ENTIRELY through inguinal canal, passes lateral to inferior epigastric vessels to enter deep inguinal ring; follows the path of spermatic cord
List the components of the foregut, midgut, and hindgut
PEGGY on LSD with a JAILED CAT who couldn’t Descend w/ RATS
F - pancreas, esophagus, gallbladder, liver, stomach, parts 1,2 duodenum
M - jejunum, appendix, ileum, 2-4 duodenum, cecum, ascending colon, proximal 2/3 transverse colon
H - descending colon, rectum, anus, transverse colon distal 2/3, sigmoid colon
Which layer of the peritoneum lacks pain fibers?
Visceral peritoneum
List the primary and secondary retroperitoneal organs
SAD* P*UC*KER.G (dpc)
S - suprarenal glands
A - aorta and IVC
D - 2-4 parts of duodenum (secondary)
P - pancreas (secondary)
U - ureter
C - ascending & descending colon (secondary)
K - kidneys
E - esophagus
R - rectum
G - gonads
What structures does THE Mesentery attach to? List the 3 other mesenteries that attach organs to the posterior body wall
Jejunum
Ileum
- Transverse mesocolon - fuses w/ posterior layer of greater omentum
- Sigmoid mesocolon
- Mesoappendix
What two peritoneal ligaments are found in this image?
Gastrosplenic ligament
Splenorenal ligament
What 2 ligaments form the lesser omentum? What is unique about this area?
Hepatogastric ligament
Hepatoduodenal ligament
Foramen of Winslow - opening to the inside of the lesser omentum behind the stomach but in front of the pancreas
What 4 ligaments are associated with the greater omentum?
- Greater omentum (via dorsal mesogastrium)
- Gastrocolic ligament
- Gastrophrenic ligament
- Gastrosplenic ligament
List the peritoneal ligaments of the liver (4)
CTFL
- Coronary ligament
- Left and Right Triangular ligament
- Falciform ligament (supraumbilical structure)
- Ligamentum teres (supraumbilical structure)
List the 3 umbilical folds and what they’re contained with, what is a fold?
Structures coursing thru extraperitoneal tissue forming elevations on interior ab wall
- Median umbilical fold - urachus
- Medial umbilical fold - medial umbilical ligaments, obliterated umbilical artery
- Lateral umbilical fold - inferior epigastric vessels, functional veins and arteries (Hasselbalch’s triangle)
What are the 3 fossae (between folds) that lie within the umbilical folds? What can form from them?
- Supravesical fossa (b/w median & medial folds) - site for supravesicle hernias
- Medial Inguinal fossa (b/w medial & lateral folds); inguinal triangle - site for direct inguinal hernias
- Lateral Inguinal fossa - (lateral to lateral umbilical folds) - site for indirect inguinal hernias
What 2 regions can the greater sac be divided into?
“closed” potential space b/w parietal and visceral layers of peritoneum
- Supracolic/supramesocolic - superior & anterior to liver and stomach (includes hepatorenal and subphrenic spaces and fossae of anterior wall)
- Infracolic/inframesocolic - inferior & posterior parts, upper & lower parts are divided by THE mesentery into right and left infracolic spaces