WorksheetsHomeostasis & Negative Feedback Mechanism
Total questions: 10
Worksheet time: 3mins
The definition of homeostasis is a
Feedback mechanism in which the response enhances the original stimulus
Feedback mechanism that stops or reduces the intensity of the original stimulus
Process of maintaining stable condition of internal environment inside the body
Process of maintaning stabler condition of environment outside the body
If you skip a meal, which of the following conditions would occur?
Insulin levels would rise and glucose would be converted into glycogen
Glucagon levels would rise and glucose would be converted into glycogen
Insulin levels would rise, and glycogen would be converted into glucose
Glucagon levels would rise, and glycogen would be converted into glucose
Which of the following occur during hypoglycaemia?
Stimulate body cells to take up glucose to increase the glucose metabolism
Stimulate glycogenesis
Stimulate glycogenolysis
Increase the rate of conversion of excess glucose into fat in adipose tissue.
Which of the following occur during hyperglycaemia?
Stimulate body cells to take up glucose to increase the glucose metabolism
Stimulate glycogenolysis
Stimulate gluconeogenesis
What is gluconeogenesis?
the conversion of excess glucose into fat in adipose tissue.
the conversion of glucose into glycogen in liver and muscle cells
the breakdown of glycogen into glucose
the conversion of amino acids and glycerol into glucose
What creates the high hydrostatic pressure needed for ultrafiltration in the glomerulus?
Narrow afferent arteriole
Wider efferent arteriole
Narrow efferent arteriole
Active transport of sodium ions
Which part of the nephron is most involved in reabsorption of glucose?
Distal convoluted tubule
Proximal convoluted tubule
Loop of Henle
Collecting duct
The thick segment of ascending limb of the Loop of Henle:
Is permeable to water
Allows passive diffusion of glucose
Actively transports sodium ions out
Passively transports sodium ions out
A patient has severe dehydration. Which combination of changes would most likely occur?
Decreased ADH, decreased collecting duct permeability, dilute urine
Decreased ADH, increased ultrafiltration rate, concentrated urine
Increased ADH, increased collecting duct permeability, concentrated urine
Increased ADH, decreased sodium reabsorption, dilute urine
If the efferent arteriole becomes wider than normal, what is the likely effect on ultrafiltration?
Increased filtration due to higher pressure
Decreased filtration due to lower glomerular pressure
No change in filtration rate
Increased protein filtration
