Cardiovascular System

What is the most numerous cell in blood?

• red blood cells

• white blood cells

• platelets

What is the main job of red blood cells?

• fight diseases

• clot blood

• produce antibodies

• carry oxygen

Where are both red blood cells and white blood cells produced?

• liver

• spleen

• bone marrow

• pancreas

What is the job of platelets?

• fight infections

• clot blood

• produce antibodies

• carry oxygen

What is the watery solution that enables blood to flow?

• plasma

• water

• cytoplasm

• electrolytes

What part of a RBC helps it carry oxygen?

• hemoglobin

• hematocrit

• heterozygous

• homozygous

Tags

NGSS.MS-LS1-2

A red blood cell's shape helps it carry more oxygen.

• true

• false

If someone didn't produce enough platelets, what symptom would you expect to observe?

• prolonged bleeding

• quick blood clotting

• internal blood clots

• sticky blood vessels

If someone didn't have enough red blood cells (as in some kinds of anemia), what symptoms could you expect to observe?

• hyperactivity

• pain and stiffness in joints

• poor blood clotting

• tiredness and fatigue

What are the upper chambers of the heart?

• atria

• ventricles