Back to quiz

6. When ADH is low, the collecting duct is:

  • less permeable to water and a large volume of urine is produced
  • more permeable to water and a small volume of urine is produced
  • less permeable to water and a small volume of urine is produced
  • more permeable to water and a large volume of urine is produced

7. Motor neurons:

  • process impulses in the brain and spinal chord; connect sensory an motor neurons
  • carry impulses from the central nervous system to effector organs; present in the peripheral nervous system
  • carry impulses from the peripheral sensory organs to the central nervous system

8. Glomerular filtrate forms in the:

  • renal capsule
  • loop of henle
  • proximal convoluted tubule
  • distal convoluted tubule

9. What part of a neuron carries impulses towards from the cell body?

  • Myelin sheath
  • Dendrites
  • Schwann cells
  • Axons

10. The final Na+ reabsorption takes place in the:

  • collecting duct
  • distal convoluted tubule
  • loop of henle
  • proximal convoluted tubule

11. The ascending limb of the loop of henle:

  • contains Na+ and Cl- pumps and is impermeable to ions
  • contains Na+ and Cl- pumps
  • contains Na+ and Cl- pumps and is impermeable to water
  • is impermeable to water

12. When carbon dioxide levels rise:

  • pH falls, breathing rate increases
  • pH rises, breathing rate decreases
  • pH rises, breathing rate increases
  • pH falls, breathing rate decreases

13. The capillary is made up of a single layer, the:

  • endothelium
  • connective tissue with collagen fibres
  • muscle and elastic tissue

14. The right side of the heart contains:

  • deoxygenated blood
  • oxygenated blood
  • both deoxygenated blood and oxygenated blood

15. During ventricular systole and atrial diastole:

  • semilunar valves open, aortic valves close
  • semilunar and aortic valves close
  • aortic valves open, semilunar valves close
  • semilunar and aortic valves open

16. Erythrocytes are:

  • platelets responsible for blood clotting
  • red blood cells responsible for transportation
  • white blood cells responsible for immune system regulation

17. The right ventricle pumps blood to the lungs through the

  • right atrium
  • pulmonary artery
  • coronary artery
  • pulmonary vein

18. The descending limb of the loop of henle:

  • is impermeable to water
  • is impermeable to ions
  • contains Na+ and Cl- pumps
  • causes the filtrate to become less concentrated

19. Blood is made up of 55%:

  • liquid plasma
  • formed elements

20. During systole, blood vessels:

  • stretch
  • recoil