8.3 Blood, Tissue Fluid, And Lymph

Question 1

Blood plasma

Answer 1

Yellow liquid in blood carrying wide variety of components including dissolved glucose and amino acids, mineral ions, hormones and large plasma proteins. Also transports erythrocytes.

Question 2

Platelets

Answer 2

Fragments of large cells called megakaryocytes. Involved in clotting mechanism

Question 3

Oncotic pressure

Answer 3

Tendency of water to move into blood by osmosis.

Question 4

Hydrostatic pressure

Answer 4

As blood flows through arterioles into capillaries, its still under pressure from blood surge every time the heart contracts

Question 5

Tissue fluid

Answer 5

Fluid filling the spaces between cells. Squeezed out of capillaries

Question 6

Arterial end (of capillary)

Answer 6

High hydrostatic pressure of -4.6kPa, net flow of fluid out of capillary to form tissue fluid

Question 7

Venous end (of capillary)

Answer 7

Low hydrostatic pressure of 2.3kPa. Net flow of fluid into capillary

Question 8

Lymph

Answer 8

Some fluid (10%) does not return to capillaries, instead drains into system of tubes called lymph capillaries

Question 9

Lymphocytes

Answer 9

Type of white blood cell that is involved in the immune system. Build up in lymph nodes