Levels of ORganization/Circulatory System

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

The job of the heart is to . . .

• pump blood around the body.

• send food to the small intestines.

• break down food.

• give energy to the body.

The circulatory system works with the ___________ system to provide our body with oxygen.

• respiratory
• digestive
• muscular
• skeletal

The human heart is an organ that pumps blood throughout the body supplying oxygen, nutrients, blood, and hormones to and from the tissues removing _________ ___________ and other wastes.

• hydrogen dioxide
• carbon moxoide
• water molecules
• carbon dioxide

Arteries carry nutrient and oxygen rich blood _____________ from the heart.

• back to
• away
• parallel

How does the heart work?

• It pumps blood first to the lungs, back to the heart and then around the rest of the body.

• It pumps blood first to the rest of the body, back to the lungs and then to the heart.

• It pumps blood around the rest of the body, back to the heart and then to the lungs,

Which of the following is the correct order of organization in living things from most basic (smallest) to most complex (biggest)?

• Organism, cell, tissue, organ, organ system

• Organ system, organ, tissue, cell, organism

• Cell, tissue, organ, organ system, organism

• Cell, organ, tissue, organ, organism, organ system

This is an example of ...

• Organ

• Organ system

• Tissue

• Cell

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Group of cells with similar functions.

• Cells

• Tissues

• Organs

• Organ Systems

Tags

NGSS.MS-LS1-3

Group of tissues with similar functions.

• Cells

• Tissues

• Organs

• Organ Systems