Question 19M.3.SL.TZ1.17
| Date | May 2019 | Marks available | [Maximum mark: 4] | Reference code | 19M.3.SL.TZ1.17 |
| Level | SL | Paper | 3 | Time zone | TZ1 |
| Command term | List, State | Question number | 17 | Adapted from | N/A |
The diagram is of a liver sinusoid.
[Source: © International Baccalaureate Organization 2019]
List the two blood vessels that supply the sinusoids.
1.
2.
[2]
a. hepatic artery ✔
b. hepatic portal vein ✔
The required words “hepatic” and “portal” were often missing.
State one feature in the diagram that identifies the structure as a sinusoid.
[1]
a. fenestrations/gaps/holes between cells ✔
b. walls are one cell thick ✔
Most often the fenestrations or equivalent word were described; “thin walls” was insufficient for walls one cell thick. “Cylinder” was often seen.
Excess nutrients absorbed in the intestine can be stored. State one example of a nutrient stored in the liver.
[1]
iron/glucose/«fat soluble» vitamins/glycogen ✔
Glucose, glycogen or iron were the most common answers. “Glucagon” was often mentioned and could not be accepted for glycogen.
