Unit 2-1 Vocabulary

the red liquid that flows through your body and carries oxygen and nutrients to your cells.

• blood
• bone marrow
• hemoglobin
• blood vessels

a protein in red blood cells that carries oxygen.

• blood
• bone marrow
• hemoglobin
• blood vessels

soft tissue inside bones where blood cells are made.

• blood
• bone marrow
• hemoglobin
• blood vessels

tubes in your body that carry blood, such as arteries, veins, and capillaries.

• blood
• bone marrow
• hemoglobin
• blood vessels

an organ in your chest that pumps blood throughout your body.

• heart
• oxygenated
• strong heartbeat
• classification

containing oxygen.

• heart
• oxygenated
• strong heartbeat
• classification

when your heart is beating very hard and fast.

• heart
• oxygenated
• strong heartbeat
• classification

grouping things based on their similarities or differences.

• heart
• oxygenated
• strong heartbeat
• classification

small cell fragments in your blood that help with clotting.

• platelets
• capillaries
• glucose
• carbon dioxide

tiny blood vessels that connect arteries and veins.

• platelets
• capillaries
• glucose
• carbon dioxide