Q 01/05

The lymphatic system is considered part of which other body system?

A) Endocrine

B) Immune

C) Nervous

D) Skeletal

Answer · why

B) Immune

Immune. The vessels that drain leaked fluid back to the blood double as highways for infection-fighting white cells, and the nodes along the route act...

Q 02/05

Like veins, lymph vessels are fitted along their length with which structures?

A) Cilia

B) Sphincters

C) Valves

D) Baffles

Answer · why

C) Valves

Valves. They keep lymph flowing one way, and they sit so close together that lymph vessels look like strings of beads.

Q 03/05

Lymph originates from which fluid that leaks out of blood into the tissues?

A) Cerebrospinal

B) Synovial

C) Pleural

D) Interstitial

Answer · why

D) Interstitial

Interstitial fluid bathes every cell, and lymph is the very same liquid under a new name: it only becomes lymph at the moment it slips inside a lymph ...

Q 04/05

Which of these vitamins travels from the gut in the lymph, with dietary fat, rather than straight into the blood?

A) Vitamin C

B) Vitamin B12

C) Folic acid

D) Vitamin D

Answer · why

D) Vitamin D

Vitamin D. Like vitamins A, E and K it dissolves in fat, so it hitches a ride with digested fat into the gut's lymph vessels instead of going straight...

Q 05/05

About how much leaked fluid does the lymphatic system return to the bloodstream each day?

A) 0.3 litres

B) 3 litres

C) 30 litres

D) 300 litres

Answer · why

B) 3 litres

3 litres. Around 20 litres of fluid seep out of the blood capillaries every day; the capillaries take 17 straight back, and the lymphatic system has t...