Circulatory/Cardiovascular system test questions

Why does the brain of mammals keep track of the temperature of the skin and blood?

C. To maintain a stable body temperature regardless of air temperature

In the human body, the circulatory system works with the respiratory system by?

B. Transporting oxygen to organs

Why does blood make a complete loop through out the body ?

C. To carry nutrients throughout the body and remove wastes

Which statement BEST explains the increase in the heart rate

C. Cells need more oxygen as the exercise became more strenuous

Which body system does heart disease MOST directly affect?

C. Circulatory

During strenuous exercise, the group of specialized cells will MOST likely?

C. Increase the heart rate

A person experiences a flight or fight response to danger. Which statement explains what takes place in the human body as a result?

A. The heart muscle contracts faster, increasing blood flow through blood vessels

What is the primary job of red blood cells?

A. Transport oxygen

Which would help Javiers muscle cells receive more oxygen?

C. Increasing the rate his heart beats

Why is it important for the walls of an artery to be thicker and more elastic?

B. To resist the higher pressure from the blood

Which BEST describes a function of the veins in the circulatory system?

A. Carrying blood from the body to the heart

Which term belongs in the box that describes this system?

A. Circulatory

A student practicing for outdoor track team begins to sweat. to what stimulus is the body responding?

B. An increase in body temperature

Which part of the body works closely with the DIGESTIVE SYSTEM to transport nutrients to the cells?

B. Blood

What is an important function of the circulatory system?

B. Carrying oxygen to cells

Humans have a body system that helps to deliver nutrients and hormones,remove wastes,and exchange gases. which body system is most responsible for these functions?

B. Circulatory

What system is responsible for carrying the nutrients to the body cells?

B. Circulatory system

What is the primary function of white blood cells in humans?

B. Fight disease

What is the relationship between arteries and veins?

B. They work together to transport nutrients

Which of these happens if the aortic valve fails to close after the left ventricle has contracted?

D. The blood will flow back into the left ventricle

Which of these is measured when a nurse takes a patients blood pressure?

D. The force of blood against artery walls as the patients heart contracts and relaxes