Chapter 6 - Homeostasis

What will happen when the human body temperature drops?

• Blood vessels in skin dilates

• Sweat glands secrete sweat

• Skeletal muscle rapidly contract

• Thermostat turns off heat retention mechanism

What would happen after a meal?

• Alpha cells of the pancreas secrete insulin

• Liver is stimulated to store glucose as glucagon

• Insulin causes the release of glucose into blood

• Increase of glucose is detected by the pancreas

Which of the following connects the kidney to the urinary bladder?

• Ureter

• Urethra

• Renal artery

• Renal vein

Which of the following process increases the concentration at X?

• Ultrafiltration at the Bowmans capsule

• Secretion at the distal tubule

• Secretion at the loop of Henle

• Reabsorption at the distal tubule

Which of the following is not found in the glomerular filtrate?

• Glucose

• Potassium ions

• Red blood cell

• Urea

How does the loop of Henle increases the concentration of medulla? (Multiple answers)

• Active transport of Na⁺ out at the ascending limb

• Passive transport of Na⁺ out at the ascending limb

• Active transport of Na⁺ in at the ascending limb

• Passive transport of Na⁺ out at the descending limb

Which of the following is true about ultrafiltration at the Bowman's capsule?

• High hydrostatic pressure because the efferent arteriole have a larger diameter than the afferent arteriole

• The highly coiled glomerular filtrate provides large surface area for ultrafiltration to occur

• Glomerular filtration have fenestration which filters out protein and cells

• The podocyte cells have filtration slit which prevents large molecules from entering the Bowman's capsule

Which of the following is not found in the glomerular filtrate in the loop of Henle?

• Urea

• H⁺

• Na⁺

• Glucose

A person consumed medication at a hospital due to food poisoning. Some drugs were found in his urine. This occur because the drug was secreted into the ________.

• proximal tubule

• distal tubule

• loop of Henle

• collecting duct

The reabsorption of _____________ at the proximal tubule occurs passively

• Vitamins

• Na⁺

• Urea

• K⁺