Formatives - Sem 1 Flashcards
Where does the duodenum run?
In c-shape from pyloric valve to jejunum
What is the first part of the duodenum and what does is receive?
Dudoenal cap, fluids from stomach
What are the features of the second part of the duodenum?
Recieves secretions from the main pancreatic duct and bile duct opening at the hepatoduodenal ampulla of Vater
Which vessles does the third part of the duodenum cross?
Superior mesenteric vessels as it crosses the mesentery
What is the arterial supply of the duodenum?
Gastroduodenal (from hepatic) and superior mesenteric arteries
Where does lymph from the duodenum go?
pre-aortic nodes at T12 L1
What is the inguinal canal?
Oblique passage through anterior abdominal wall for structures to pass from the abdominal cavity to the scrotum/labia majora
Where does the inguinal canal begin and end?
Deep inguinal ring (defect in transversalis fascia) to superficial inguinal ring (defect in aponeurosis of external oblique)
What are the boundaries of the inguinal canal?
Anterior wall is external oblique, lateral is internal oblique, roof is internal oblique and transversus abdominis, floor is inguinal ligament, posterior wall is transversalis fascia and conjoint tendon
What is the contents of the inguinal canal?
Spermatic cord (male) or round ligament (female) and ilioinguinal nerve
Where does the abdominal aorta branch to give rise to the renal arteries?
L1
Where does the abdominal aorta branch to give rise to the gonadal arteries?
L2
Where does the abdominal aorta branch to give rise to the inferior phrenic artery?
T12
Where does the abdominal aorta branch to give rise to the lumbar arteries?
L1-L5
Where does quadratus lumborum muscle attach?
Iliac crest and 12th rib, L1-L4 transverse processes
Which nerves supply quadratus lumborum?
T12-L4 anterior rami for motor innervation
What is the action of quadratus lumborum?
Unilateral - bends trunk to same side
Bilateral - assists in forced expiration and supports 12th rib
What is the lesser omentum?
double layer of peritoneum passing between liver and lesser curvature of stomach
What are the other names for the lesser omentum?
hepatogastric and hepatoduodenal ligaments
What is contained in the free edge of the lesser omentum?
hepatic artery, bile duct and portal vein
What is the sympathetic chain?
System of interconnected ganglia on either side of vertebral column
Where does the sympathetic chain run?
From cervical ganglia in the neck through the thorax and abdomen to the ganglion impar on the surface of the sacrum/coccyx
What does the sympathetic chain do?
Acts as a pathway for sympathetic fibres from spinal cord (via white rami communicans at T1-L1/2) to pass into the spinal nerves and body viscera via grey rami communicans
What type of joint is the manubriosternal?
secondary cartilaginous
Where do the anterior and posterior intercostal arteries run?
In costal groove in intercostal space
Where do the 1st and 2nd posterior intercostal arteries arise from?
A branch of the costocervical trunk from subclavian (the supreme intercostal artery)
Where do posterior intercostal arteries 3-11 and subcostal arise from?
Direct from descending aorta
Describe the branches of internal thoracic artery?
Gives off first 6 anterior intercostal arteries then terminates as superior epigastric and musculophrenic arteries
Which artery supplies the anterior intercostal arteries to intercostal spaces 7-9?
Musculophrenic artery
Which atrium forms the base of the heart?
Left atrium
What are the musculi pectinati of the left atrium?
Muscular ridges
Which valve prevents reflux of blood from left ventricle to left atrium?
Mitral valve
Where do the greater, lesser and least splanchnic nerves pass through the diaphragm?
Greater and lesser through openings in crura at T12, least with sympathetic trunks passes behind medial arcuate ligament at T12
Which nerve supplies parasympathetic innervation to the transverse colon?
Vagus
Which nerves innervate the internal oblique muscle?
Anterior rami of T7-L1
What is the root value of the phrenic nerve?
C3-5
Which vessel runs alongside the small cardiac vein?
Right marginal artery
Which structure is most posterior at the right renal hilum?
Ureter
What is the root value of the iliohypogastric nerve?
L1
Which layer of the anterior abdominal wall is only found between the umbilicus and the pubic bone?
Scarpa’s fascia
Which artery supplies the descending colon?
Left colic artery
Which lobes of the liver does the gallbladder lie between?
Right lobe and quadrate lobe
The inferior mesenteric vein drains directly into which structure?
splenic vein
Where is the junction between midgut and hindgut?
Transverse colon
Which muscle lies immediately superficial to the neurovascular plane in the thorax?
Internal intercostal
Which is the primary muscle of respiration at rest?
diaphragm
Which structure allows expansion of the pulmonary vessels?
Pulmonary ligament
Lymphatic drainage of the lungs is where?
Hilar nodes
What initiates heart beat?
Sinoatrial node
Which artery supplies 2/3rds of the interventricular septum of the heart?
Posterior interventricular artery
Which is the first branch of the aortic arch?
Brachiocephalic trunk
The carina of the trachea is at which vertebral level?
T4/5
Which muscle forms the anterior wall of the rectus sheath?
External oblique
Which muscle is found inferior to the medial arcuate ligament?
psoas
which muscle attaches to ribs 5-7, the pubic tubercle and the xiphoid process?
rectus abdominis
what lies posterior to rectus abdominis after the arcuate line?
transversalis fascia
which muscle’s ONLY function is to tense the linea alba?
pyramidalis
which artery passes in the lineorenal ligament?
splenic artery
left gastric is a direct branch of?
coeliac axis
Which artery forms the superior pancreaticoduodenal artery?
gastroduodenal artery
Which artery supplies the greater curvature of the stomach?
left gastro-epiploic
where does lymph from the stomach drain?
pre-aortic T12
What is the cisterna chyli continuous with?
thoracic duct
Where does lymph from the sigmoid colon drain?
pre-aortic nodes at L3
What colour lymph may be found in the intestinal trunk?
milky-white lymph
where does lymph from the superficial layers of the anterior abdominal wall below the umbilicus drain?
superficial inguinal nodes
Which muscle of the thoracic wall primarily acts to raise the ribs on inspiration?
external intercostal
Which muscle of the thoracic wall recieves motor innervation from the long thoracic nerve?
serratus anterior
Which muscle of the thoracic wall has fibres radiating from the lateral borders of the sternum?
transversus thoracic
Which muscle of the thoracic wall is innervated only by the medial pectoral nerve?
pectoralis minor
Which muscle of the thoracic wall can act to both raise and depress the ribs?
internal intercostal
Where is the sinoatrial node located?
crista terminalis
The moderator band is unique to which chamber of the heart?
right ventricle
what are the muscular ridges in the wall of the left ventricle?
trabeculae carneae
Which structure is the origin of the coronary arteries?
aorta
which structures attach to the margins of the cuspid valves?
chordae tendineae