7th Grade Human Body Review

Frank is creating a model of a multicellular organism. His model must illustrate all of the levels of organization. In a multicellular organism, such as a fish, which of the items below is composed of the most levels and what best justifies your answer?

• Organs because sells make up organs, organ’s make up systems; systems make up tissue. I don’t kno

• Organs because cells make up systems, systems make up tissue, tissues make up organs.

• Systems because tissues make up organs, organs make up systems, systems make up cells.

• Systems because cells make up tissues, tissues make up organs, organs make up systems.

Which of the following best explains how the circulatory system works with the respiratory system for gas exchange with cells?

• Arteries exchange gases with blood to bring oxygen to the cells and carbon dioxide back to the lungs.

• Capillaries exchange gases with blood to bring carbon dioxide to the cells and oxygen back to the lungs.

• Capillaries exchange gases with blood to bring oxygen to the cells and carbon dioxide back to the lungs.

• Arteries exchange gases with blood to bring carbon dioxide to the cells and oxygen back to the lungs.

A boy was in a car accident and received a severe injury. He Lost control of peripheral nerves. He was still able to talk and breathe, and his heart is still beating. What was most likely injured?

• Spinal cord

• cerebellum

• Cerebrum

• Brain stem

The diagram above is a model that shows structural organization within a multicellular organism. Why is tissue listed between Cell and Organ?

• Specialized cells form a tissue, and many tissues form in organ.

• One tissue becomes cells, and one organ forms tissues.

• Specialized tissues for my cell, and many organs form a tissue.

• One cell becomes tissues, and one tissue becomes an organ.

A student is developing a model of the structural organization of multicellular organisms. The picture above represents the components of this model. How should she arrange these components from simplest to most complex?

• 1

• 2

• 3

• 4

The graph above shows the effect of a person exercising for 30 minutes and then stopping. Which of the following best explains the results seen in this graph?

• When a person is exercising, the heart beats faster so the veins can deliver more oxygen to the cells.

• When a person is exercising, the heart beats faster so the arteries can deliver more oxygen to the cells.

• When a person stops exercising, the heartbeat slows so the veins can deliver more oxygen to the cells.

• When a person is exercising, the heartbeat slower so they arteries can deliver more oxygen to the cells.

The diagram above is a model of a system in the body. Which of the following best describes one function of the system?

• Most veins carry waste products back to the heart.

• Capillaries carry carbon dioxide back to the heart.

• Most arteries carry waste products back to the heart.

• Alveoli carry carbon dioxide back to the heart.

The diagram above shows the trachea. What is the function of the branch tubes on the end?

• They are bronchi that moves air from the trachea to the lungs.

• They are bronchi that exchange oxygen and carbon dioxide with the blood.

• They are alveoli that exchange oxygen and carbon dioxide with blood.

• They are alveoli that move air from the trachea to the lungs

What is the main function of the lungs?

• Controls muscle movement

• Provides gas exchange

• Absorb nutrients

• Transports blood

What is the function of the diaphragm?

• It is muscular organ that allows the rib cage to expand.

• It is a muscular organ that circulates blood throughout the body.

• It is an organ that exchanges gases in the respiratory system.

• It is an organ that eliminates waste in the digestive system.