Circulatory System

What do all organisms need to survive?

• energy

• blood

• carbon dioxide

• soil

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Running is an activity that causes the cells in the muscular system to use oxygen at a faster rate. Which system responds by delivering more oxygen to these cells?

• digestive

• nervous

• circulatory

• endocrine

What is the main function of the circulatory system?

• secrete enzymes

• digest proteins

• produce hormones

• transport materials

Which gas is transported by the circulatory system in humans and is used by cells during respiration to release energy stored in food?

• carbon dioxide

• nitrogen

• hydrogen

• oxygen

Tags

NGSS.MS-LS1-7

The diagrams show models of the circulatory systems of a fish and frog.

A student compared these diagrams. The student found that each of these organisms had a heart to pump blood. Which statement is supported by the student’s findings?

• Some organisms are composed of one cell, while others are multicellular.

• Many multicellular animals have similar organs and specialized systems.

• The circulatory system in most organisms removes solid wastes from their bodies.

• All animals have identical circulatory systems.

Tags

NGSS.MS-LS4-2

State one reason why blood at location B contains more oxygen than blood at location A.

• because blood at location A goes to the lungs

• because blood at location A comes from the lungs

• because blood at location B comes from the lungs

• because blood at location B goes to the lungs

Tags

NGSS.MS-LS1-3

State the general relationship between exercise and heart rate in humans.

• If a person exercises, then their heart rate will not change

• If a person exercises, then their heart rate will increase

• If a person exercises, then their heart rate will decrease

• Person exercising and heart rate are not related

Identify one way to determine a person's heart rates.

• put a hand on the heart to measure pulse

• put a thumb on the wrist to measure pulse

• put a thumb on the neck to measure pulse

• put two fingers on the wrist to measure pulse

The human body has specialized cells, such as white blood cells, to help protect it from many diseases. Describe what these specialized cells do to protect the body from the disease.

• they carry oxygen

• they fight and destroy germs

• they give blood its color

• they clot when we get a cut

Select the structure and explanation of how it contributes to the way the human system functions.

• heart replaces carbon dioxide with oxygen

• blood vessels transport nutrients and oxygen

• heart replaces oxygen with carbon dioxide

• blood vessels pump heart rate

Tags

NGSS.MS-LS1-3