Circulatory System

The structure responsible for pumping blood throughout the body is

• the kidney

• the stomach

• the brain

• the heart

How many chambers does the human heart have?

• one

• two

• three

• four

What are the flaps of tissue found in veins, that prevent blood from flowing backward.

• valves

• platelets

• ventricle

• antibodies

What are the 4 blood groups?

• A, B, AB, ABC

• A, B, AB, O

• A, B, C, D

• A, B, C, O

These structures located between the 2 atrium and the 2 ventricles that keep blood flowing in ONE DIRECTION are called

• stops

• veins

• valves

• gates

A group of cells located in the right atrium responsible for sending signals to other chambers causing them to contract is

• start cells

• nucleus

• switch

• pacemaker

The alternating expansion and relaxation of the artery wall caused by contraction of the left ventricle is

• blood pressure

• pulse

• blood reading

• palpitation

Tags

NGSS.HS-LS1-3

Which component of blood makes up the majority (highest percent)?

• plasma

• white blood cells

• red blood cells

• platelets

An iron-containing protein found in red blood cells is

• hemoglobin

• red pigment

• platelets

• erythrocyte

Platelets are important for which process?

• fighting bacteria

• carrying oxygen

• recycling water

• clotting