Lab 7 Heart and Blood

Question 1

non-living fluid matrix
90% water
55% blood

Answer 1

Plasma

Question 2

Living cells that are suspended in plasma
45% of blood
Erythrocytes, leukocytes, and platelets

Answer 2

Formed elements

Question 3

cell fragments that function in the blood clotting
one half the size of RBC

Answer 3

platelets

Question 4

blood: average liters for adults?

Answer 4

5.5 liters

Question 5

red blood cell
most numerous
no nucleus
biconcave

Answer 5

Erythrocyte

Question 6

white blood cell
protect against diseases - immune responses
contain nucleus
less numerous

Answer 6

leukocyte

Question 7

allergic reaction and parasitic worm infections

Answer 7

Eosinophils

Question 8

most numerous WBC
WBC arrive at infection site and found in acute bacterial infections

Answer 8

Neutrophils

Question 9

Found during a chronic infections
large wbc 2-3 times the size of a RBC

Answer 9

Monocytes

Question 10

cancer of the WBC

Answer 10

Leukemia

Question 11

What are the heart sounds

Answer 11

Lubb- first heart sound

A-V valves close as ventricular pressure rises

Dupp- second heart sound

semilunar valves close as blood flows back towards ventricles due to ventricular pressure decreasing

Murmur- sound heard when Mitral/bicuspid valve doesn’t close completely and blood backwashes into left atrium

Question 12

Cell surface marker on RBC. trigger the immune response

Answer 12

antigen

Question 13

Protein in plasma that binds to matching antigen
–> Agglutination

Answer 13

Antibody

Question 14

clumping of the RBC when antigens & anti-body form a comples

Answer 14

agglutination