Question

1. fill in each blank with a term from the list. red plasma four iron protecting platelets water clots white immunity scab blood has __ important parts. is the liquid that makes up most of our blood. plasma is made of mostly . blood cells are the most common kind of blood cell. the in these cells gives blood its red color. blood cells have the important job of us from diseases and germs. this is called giving us . when we hurt ourselves and start to bleed, stop the bleeding by making . this means that the blood thickens and dries into a __. 2. circle t if the statement is true or f if it is false. t f a) platelets are the part of blood that fight germs and disease. t f b) when blood thickens it is called clotting. t f c) we have fewer white blood cells than red blood cells. t f d) the heart is a voluntary muscle. t f e) it would be impossible to remember to make our heart beat. t f f) blood with not much oxygen in it is called oxygen - poor or deoxygenated. t f g) the human heart is the size of a football.

Explanation:

Step1: Analyze statement a

Platelets form clots, white - blood cells fight germs. So it's false.

Step2: Analyze statement b

Blood thickening is called clotting. So it's true.

Step3: Analyze statement c

There are fewer white blood cells than red blood cells. So it's true.

Step4: Analyze statement d

The heart is an involuntary muscle. So it's false.

Step5: Analyze statement e

The heart beats involuntarily, we can't remember to make it beat. So it's true.

Step6: Analyze statement f

Blood with low oxygen is oxygen - poor or deoxygenated. So it's true.

Step7: Analyze statement g

The human heart is about the size of a fist, not a football. So it's false.

Answer:

a. F
b. T
c. T
d. F
e. T
f. T
g. F