Digestion, Urinary System And Transport Section 6 Flashcards
Approximately how many nephrons are in a human kidney
1000000
How large is a new born babies stomach
Day 1 - size of a cherry
Day 3 - size of a walnut
1 week - size of an apricot
1 month - size of a large egg
What role do the kidneys play in the regulation of blood pressure
A vital role
What are the functions of the urinary system
Excretion of waster products, maintaining electrolyte balance, filtration of blood, elimination of excessive hydrogen ions, activation of vitamin d, volume regulation
Where are opioids metabolised
In the liver
Like adults, in infants, the stimulation to void the bladder is through the stretch exerted on the bladder wall, what approx volume of urine stimulates this need to void in an infant
15mls
What is the order of the flow of filtrate through the structures of the nephron
Bowmens capsule
Proximal tubule
Loop of henle
Distal tubule
Collecting duct
Which of these blood constituents do not pass through the semi-permeable membrane into filtrate
Platelets
The pancreas has both exocrine and endocrine functions
True
Defecation is a voluntary response for both adults and infants
False
What happens in the cephalic phase of digestion
Gastric juices are secreted and the stomach contracts
Villi are found in the small intestine, what is their purpose
To provide a larger surface area for nutrient absorption
The urinary system is fully developed and functioning at birth
False
What is GFR
Glomerular filtrate rate
