Transport/fluids

Question 1

Interstitial fluid

Transcellular fluid

Extracellular fluid

Intracellular fluid

Answer 1

A solution that bathes and surrounds the tissue cells of multicellular animals

Portion of total body water contained within epithelial lined spaces

Interstitial fluid, plasma and transcellular fluid

All fluid contained inside the cells

Question 2

Facilitator/uniport

Cotransporter/symport

Exchanger/antiport

Hypotonic sol.

Hypertonic sol.

Answer 2

Carrier protein. One ion species, one direction

Carrier protein, two ion species, one direction uses electrochemical gradient to transport

Carrier protein, two ion species, two directions normally both ions of same charge

Water into cell, solution has less solutes/more water

Water out of cell, solute has more solutes/less water

Question 3

Capillary endothelium

Epithelia

Answer 3

Separates plasma from interstitial fluid (lines blood vessels). Small ions/solutes can pass through easily proteins can not

Separates transcellular fluid from interstitial fluid. For absorption/secretion and acts as a barrier for organs

Question 4

Endocytosis

• pinocytosis
• phagocytosis
• receptor-mediated

Exocytosis

Transcytosis

Answer 4

Active transport, water and solutes into a cell, 3 types;

• non specific uptake
• in the immune system
• specific uptake

Active transport, molecules (proteins) out of the cell

Transcellular transport, macromolecules are transported across interior of a cell. Using vesicles drawn from one side of cell, across cell, ejected on the other side (insulin)