6. Circulation

Question 1

Plasma:

Answer 1

ions and proteins
55% of blood composition
non-living

Question 2

Formed elements of blood:

Answer 2

Erythrocytes - red blood cells
Leukocytes - white blood cells
Platelets - cell fragments (metakaryocytes)

Question 3

Blood is a type of ______ tissue

Answer 3

connective

Question 4

Red blood cells:

Answer 4

anucleate, few organelles

carry oxygen around body

Question 5

Hemaglobin:

Answer 5

an iron-bearing protein that carries the bulk of oxygen that is carried in the blood

Question 6

Basophils

Answer 6

release histamine for inflammatory response

Question 7

Monocytes

Answer 7

immature macrophage

Question 8

Neutrophils

Answer 8

avid phagocytes at site of acute infection

Question 9

Lymphocytes

Answer 9

become B and T cells, important for immune response

Question 10

Eosinophils

Answer 10

defence against parasitic worms

Question 11

Platelets

Answer 11

cell fragments necessary for blood clotting

Question 12

Erythropoetin

Answer 12

hormone responsible for regulating RBC production

Question 13

Erythrocytes

Answer 13

transport oxygen bound to hemoglobin molecules

Question 14

Plasma contains:

Answer 14

90% water, dissolved substances eg. nutrients, salts, gases, hormones, proteins

Question 15

Antigens

Answer 15

a substance that the body recognises as foreign, stimulates immune system to release antibodies

Question 16

Antibody

Answer 16

specialised substance produced that can provide immunity against specific antigen

Question 17

Systemic circulation:

Answer 17

system of blood vessels that carries nutrient and oxygen-rich blood to all body cells

Question 18

Pulmonary circulation:

Answer 18

system of blood vessels that carry blood to and from the lungs for gas exchange

Question 19

Leukocytes:

Answer 19

white blood cells

Question 20

Hematopoesis:

Answer 20

red blood cell formation, occurs in bone marrow