ILA Flashcards
Which artery most frequently supplies the Atrio Ventricular Node?
Right coronary artery
Which sentence best describes the relationships of BP & SVR with the parasympathetic nervous system?
Parasympathetic nerves do not have a major influence on peripheral blood vessel diameter as blood vessels do not have parasympathetic innervation.
What is the purpose of the Ductus Arteriosus in the foetal cardiovascular system?
allow blood to bypass the foetal lungs by shunting it from the Pulmonary Artery to the Aorta
Which nerve innervates the pericardium?
Phrenic nerve
Which sentence best describes the relationships of SVR & BP with the sympathetic nervous system?
Sympathetic nerves decrease peripheral blood vessel diameter thereby increasing systemic vascular resistance and increasing blood pressure.
Occlusion is most likely to result in a fatal heart attack
Left main coronary artery
What is the term used to describe a malignant tumour of the pleural membranes?
Mesothelioma
Which of these cells provides cilia for the mucociliary escalator?
Columnar Epithelial Cells
Which of these factors will contribute to causing bronchodilation?
Adrenaline causes bronchodilation, by binding to β 2 -receptors in the smooth muscle of the bronchioles and causing their relaxation.
Central chemoreceptors are located in the ventral medulla and respond to:
CSF pH
Which of these substances is secreted by Enterochromaffin (ECL) Cells
Histamine
Which of the following structures is NOT present in the Porta Hepatis?
Hepatic vein
What is the action of the proton pump in the parietal cells of the stomach?
K+ into cell, H+ out of cell
Which of the following structures is classified in embryology as part of the ‘foregut’
Gallbladder Lower third of oesophagus Proximal half of the Duodenum Pancreas Gallbladder
You are trying to design a drug to act on histamine receptors on parietal cells to help patients with reflux disease. What would be the mechanism of this drug?
Inhibits Histamine 2 receptors to reduce acid secretion
Which of these is not a function of the liver?
Glycogen storage
Which of the following statements is True?
Cholecystokinin is released in response to the presence of amino acids in the gut.