BT_PO 1.76 Regulation of osmolarity

I visited Canberra towards the end of last year to watch one of my children run. In my (large) amount of free time, I visited the National Portrait Gallery, where I happened upon this portrait of Derek Denton, the Australian scientist who discovered the mechanism of thirst.


BT_PO 1.76  Describe the regulation of osmolality

The factors that regulate vasopressin secretion also regulate thirst TRUE/FALSE

Vasopressin is synthesised in the posterior pituitary TRUE/FALSE

Most of plasma’s osmolality is due to Na+ and its accompanying ions, CL- and HCO3- TRUE/FALSE

Hypovolaemia stimulates thirst via angiotensin II acting at sites outside the blood brain barrier  TRUE/FALSE

Aldosterone is responsible for regulating plasma osmolality TRUE/FALSE

BT_PO 1.83 Describe the physiological consequences of starvation

Whilst fasting for a minor surgical procedure last week, I had plenty of time to ponder this topic…

BT_PO 1.83 Describe the physiological consequences of starvation
Prolonged starvation reduces immune function TRUE/FALSE

Brain and nerves, renal medulla, red blood cells are obligate glucose consumers TRUE/FALSE 

Adaptive reponses to starvation aim for conservation of energy and protein TRUE/FALSE

Muscle glycogen is freely available as a source of blood glucose TRUE/FALSE

During starvation, the gastrointestinal tract has an enhanced ability to digest food TRUE/FALSE