PCS Unit 2 Questions Flashcards
Which hormone is normally released from the gastric mucosa and acts to stimulate apetite (ie feeding?
Ghrelin
During normal cardiac rhythm, which area drives heart rate?
Sinoatrial node
Which of the following vitamins is recommended for supplementation while attempting to conceive?
B9
Which of the following notations represents an essential fatty acid?
25 – hydroxycholecalciferol
Vitamin D3 is produced in response to sunlight exposure and is then converted in the liver into 25- hydroxycholecalciferol. Measuring levels of 25- hydroxycholecalciferol is the best way to measure a person’s vitamin D levels. It has a longer half life than
1,25-dihydroxycholecalciferol.
What is the function of basophils?
They release histamine during an allergic reaction or asthma attack. This opens blood vessels which increases blood flow so other immune system cells can more quickly respond to the allergen.
What is an example of a fuel source used by the body when the RER is greater than 1?
Glucose is the primary example
Valine- RER is ratio of CO2 to O2 produced. Valine is an example of a BCAA (branched chain amino acid). This means it can be used to provide a source of energy during exercise (including anaerobic exercise). Valine can be converted to succinyl-CoA which is an intermediate in the TCA cycle.
What type of epithelia tissue lines the urinary bladder?
Transitional epithelium
It is impermeable to ions and water and can rapidly adapt to distension and contraction by changing from a taller to thinner epithelium.
Why is arginine essential for infants not adults?
Infants are not able to synthesise arginine but adults can in the urea cycle.
What is in the endocrine portion of the pancreas?
Cells that make up the islets of langerhans including alpha, beta, delta, epsilon and upsilon
