Biology Quiz

Which is the function of the circulatory system?

• get rid of excess blood, salt, and water

• maintain a low internal body temperature

• supply body cells with oxygen and food

• transport oxygen, nutrients, and wastes

Which is the function of the respiratory system?

• activate the body's defenses against airborne pathogens

• regulate oxygen and carbon dioxide supplies in cells

• supply energy to maintain the metabolism of cells

• transport gases such as oxygen into the human body

Which is the function of the excretory system?

• maintain the correct amount of nutrients

• release energy from food as ATP molecules

• remove carbon dioxide, salts, and water

• transport carbon dioxide to body cells

Which of these is not a function of the circulatory system?

• removing wastes

• transporting blood

• conducting neuron impulses

• delivering oxygen

What are the three major types of blood vessels?

• arteries, valves, arterioles

• arteries, veins, capillaries

• veins, arterioles, capillaries

• capillaries, arterioles, valves

The heart pumps ____ blood to the lungs.

• deoxygenated

• oxygenated

• oxygen-rich

• depressurized

Which part of the vessels shown here prevents blood from flowing backwards?

• smooth muscle

• endothelium

• connective tissue

• valve

Which of these three vessels carries blood back to the heart?

• artery; largest cross section

• vein, medium sized cross section

• capillary; smallest cross section

• none of these

Where does oxygenated blood flow to first in this circulatory loop?

• to the pulmonary artery leading to the lungs

• to the right ventricle from the lungs

• to the left atrium from the lungs

• to the vein leading away from the body

How does atherosclerosis cause health problems?

• clogged arteries decrease blood pressure

• clogged arteries put stress on heart

• clogged veins decrease blood pressure

• clogged veins increase blood volume