MD3001 Misc

Question 1

what drug affects the K+ inhibitors of only smooth muscle?

Answer 1

nicorandil works on these receptors

Question 2

affects of ACE inhibitors on preload and afterload

Answer 2

these drugs decrease both preload and afterload

Question 3

outline lymph drainage to paratracheal nodes

Answer 3

pulmonar -> bronchopulmonary -> inf/sup tracheobronchial -> paratrachel

Question 4

how does oxygenated blood get from placenta to foetus?

Answer 4

umbilical vein transmits this

Question 5

outline pathway of external jugular vein down neck

Answer 5

this vein travels from behind angle of mandible to mid clavicle

Question 6

what neural structures lie post to sternocleidomastoid

Answer 6

cutaneous cervical plexus and accessory nerve lie in relation to this

Question 7

which lymph nodes accompany the jugular veins?

Answer 7

superficial and deep cervical nodes accompany these veins

Question 8

Reynold’s number (Re)

Answer 8

velocity x radius/viscosity

Question 9

hormones that vasoconstrictor (3)

Answer 9

1. adrenaline
2. angiotensin
3. vasopressin

Question 10

hormones that vasodilator (2)

Answer 10

1. adrenaline

2. atrial-natriuretic peptide

Question 11

outline the 4 steps in ventricular contraction

Answer 11

1. isovolumetric period of contraction
2. period of rapid ejection (1/3) when 70% ejected
3. period of slow ejection (2/3) when 30% ejected
4. isovolumic period of relaxation

Question 12

arginine vasopressin

Answer 12

aka ADH

Question 13

effects of aldosterone

Answer 13

this hormone increases Na+ and water reabsorption in kidneys

Question 14

capillary hydrostatic pressure at arterial end

Answer 14

this pressure at arterial end is 30-40mmHg

Question 15

capillary hydrostatic pressure at venous end

Answer 15

this pressure at venous end is 10-15mmHg

Question 16

Poiseuille Equation

Answer 16

flow = (Pxradius)/(viscosityxlength)

Question 17

innervations of recurrent laryngeal nerves

Answer 17

these nerves give motor branches to laryngeal muscles and sensory to mucosa below focal folds