Principles of Physiology and Pharmacology

Question 1

Which is the myelinating cell type in the PNS?

Answer 1

Schwann cell

Question 2

What does excitation-contraction coupling start with?

Answer 2

Propagation of APs along the sarcolemma

Question 3

Concerning body fluids and osmolality: select the incorrect statement.
A) Plasma osmolality is 290 mosmol/kg H2O
B) Isotonic saline has 150mmol/L of NaCl
C) 500ml of H2O containing 20mmol CaCl2 has an osmolarity of 80mosmol/kg H2O
D) Normal blood has a haematocrit of 0.47 in adult males

Answer 3

500ml of H2O containing 20mmol CaCl2 has an osmolarity of 80mosmol/kg H2O

Question 4

Renal clearance values…
A) For insulin are a measure of GFR
B) Greater than the GFR indicate tubular secretion
C) Less than GFR are always indicative of tubular reabsorption
D) Can be measured non-invasively

Answer 4

Greater than the GFR indicate tubular secretion

Question 5

How long is a cardiac action potential?

Answer 5

200-400ms

Question 6

What type of Ca channels are found at the T-tubule membrane?

Answer 6

L-type

Question 7

What cells does omeprazole act on?

Answer 7

Parietal cells

Question 8

Where are components of Herring bodies synthesised?

Answer 8

Pre-optic and paraventricular nuclei of hypothalamus